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Posted to commits@ignite.apache.org by vo...@apache.org on 2016/01/03 22:07:28 UTC

[1/3] ignite git commit: Revert "IGNITE-2330: Simplified GridFunc."

Repository: ignite
Updated Branches:
  refs/heads/master cd5cd2efe -> ddbe2d596


http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple3.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple3.java b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple3.java
index e5d247a..b999e2a 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple3.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple3.java
@@ -34,6 +34,7 @@ import org.jetbrains.annotations.Nullable;
  * This class doesn't provide any synchronization for multi-threaded access
  * and it is responsibility of the user of this class to provide outside
  * synchronization, if needed.
+ * @see GridFunc#t3()
  * @see GridFunc#t(Object, Object, Object)
  */
 public class GridTuple3<V1, V2, V3> implements Iterable<Object>, Externalizable, Cloneable {

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple4.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple4.java b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple4.java
index d1e69b5..c95a859 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple4.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple4.java
@@ -34,6 +34,7 @@ import org.jetbrains.annotations.Nullable;
  * This class doesn't provide any synchronization for multi-threaded access
  * and it is responsibility of the user of this class to provide outside
  * synchronization, if needed.
+ * @see GridFunc#t4()
  * @see GridFunc#t(Object, Object, Object, Object)
  */
 public class GridTuple4<V1, V2, V3, V4> implements Iterable<Object>, Externalizable, Cloneable {

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple5.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple5.java b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple5.java
index 7d25996..9790f48 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple5.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple5.java
@@ -34,6 +34,7 @@ import org.jetbrains.annotations.Nullable;
  * This class doesn't provide any synchronization for multi-threaded access
  * and it is responsibility of the user of this class to provide outside
  * synchronization, if needed.
+ * @see GridFunc#t5()
  * @see GridFunc#t(Object, Object, Object, Object, Object)
  */
 public class GridTuple5<V1, V2, V3, V4, V5> implements Iterable<Object>, Externalizable, Cloneable {

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple6.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple6.java b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple6.java
index c904587..044944b 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple6.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTuple6.java
@@ -34,6 +34,7 @@ import org.jetbrains.annotations.Nullable;
  * This class doesn't provide any synchronization for multi-threaded access
  * and it is responsibility of the user of this class to provide outside
  * synchronization, if needed.
+ * @see GridFunc#t5()
  * @see GridFunc#t(Object, Object, Object, Object, Object)
  */
 public class GridTuple6<V1, V2, V3, V4, V5, V6> implements Iterable<Object>, Externalizable,

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTupleV.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTupleV.java b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTupleV.java
index 58e18aa..225366a 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTupleV.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridTupleV.java
@@ -35,6 +35,7 @@ import org.apache.ignite.internal.util.typedef.internal.U;
  * This class doesn't provide any synchronization for multi-threaded access
  * and it is responsibility of the user of this class to provide outside
  * synchronization, if needed.
+ * @see GridFunc#tv(Object...)
  */
 public class GridTupleV implements Iterable<Object>, Externalizable, Cloneable {
     /** */

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/lang/IgniteUuid.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/lang/IgniteUuid.java b/modules/core/src/main/java/org/apache/ignite/lang/IgniteUuid.java
index 44ca067..5c6bb9a 100644
--- a/modules/core/src/main/java/org/apache/ignite/lang/IgniteUuid.java
+++ b/modules/core/src/main/java/org/apache/ignite/lang/IgniteUuid.java
@@ -186,7 +186,7 @@ public final class IgniteUuid implements Comparable<IgniteUuid>, Iterable<Ignite
 
     /** {@inheritDoc} */
     @Override public GridIterator<IgniteUuid> iterator() {
-        return F.identityIteratorReadOnly(Collections.singleton(this));
+        return F.iterator(Collections.singleton(this), F.<IgniteUuid>identity(), true);
     }
 
     /** {@inheritDoc} */

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/spi/eventstorage/memory/MemoryEventStorageSpi.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/spi/eventstorage/memory/MemoryEventStorageSpi.java b/modules/core/src/main/java/org/apache/ignite/spi/eventstorage/memory/MemoryEventStorageSpi.java
index 56a627a..c7c635e 100644
--- a/modules/core/src/main/java/org/apache/ignite/spi/eventstorage/memory/MemoryEventStorageSpi.java
+++ b/modules/core/src/main/java/org/apache/ignite/spi/eventstorage/memory/MemoryEventStorageSpi.java
@@ -216,7 +216,6 @@ public class MemoryEventStorageSpi extends IgniteSpiAdapter implements EventStor
     }
 
     /** {@inheritDoc} */
-    @SuppressWarnings("unchecked")
     @Override public <T extends Event> Collection<T> localEvents(IgnitePredicate<T> p) {
         A.notNull(p, "p");
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheLuceneQueryIndexTest.java
----------------------------------------------------------------------
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheLuceneQueryIndexTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheLuceneQueryIndexTest.java
index 1e868b7..59a3eca 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheLuceneQueryIndexTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheLuceneQueryIndexTest.java
@@ -21,7 +21,6 @@ import java.io.Serializable;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.concurrent.Callable;
-import java.util.concurrent.ThreadLocalRandom;
 import java.util.concurrent.atomic.AtomicInteger;
 import org.apache.ignite.Ignite;
 import org.apache.ignite.IgniteCache;
@@ -336,8 +335,7 @@ public class GridCacheLuceneQueryIndexTest extends GridCommonAbstractTest {
                             map = new HashMap<>();
                         }
 
-                        map.put(new ObjectKey(String.valueOf(i)),
-                            vals[ThreadLocalRandom.current().nextInt(vals.length)]);
+                        map.put(new ObjectKey(String.valueOf(i)), F.rand(vals));
                     }
 
                     if (!map.isEmpty()) {

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheEventAbstractTest.java
----------------------------------------------------------------------
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheEventAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheEventAbstractTest.java
index 52737e7..cb24e54 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheEventAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/distributed/GridCacheEventAbstractTest.java
@@ -757,7 +757,7 @@ public abstract class GridCacheEventAbstractTest extends GridCacheAbstractSelfTe
             if (TEST_INFO)
                 X.println("Cache event: " + evt.shortDisplay());
 
-            AtomicInteger cntr = F.addIfAbsent(cntrs, evt.type(), new AtomicInteger());
+            AtomicInteger cntr = F.addIfAbsent(cntrs, evt.type(), F.newAtomicInt());
 
             assert cntr != null;
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/test/java/org/apache/ignite/internal/util/ipc/shmem/IpcSharedMemoryCrashDetectionSelfTest.java
----------------------------------------------------------------------
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/util/ipc/shmem/IpcSharedMemoryCrashDetectionSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/util/ipc/shmem/IpcSharedMemoryCrashDetectionSelfTest.java
index 3482fd6..1aae999 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/util/ipc/shmem/IpcSharedMemoryCrashDetectionSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/util/ipc/shmem/IpcSharedMemoryCrashDetectionSelfTest.java
@@ -517,16 +517,12 @@ public class IpcSharedMemoryCrashDetectionSelfTest extends GridCommonAbstractTes
          * @param shmemIds Shared memory IDs string.
          */
         public void shmemIds(String shmemIds) {
-            if (shmemIds == null)
-                this.shmemIds = null;
-            else {
-                String[] tokens = shmemIds.split(",");
-
-                this.shmemIds = new ArrayList<>(tokens.length);
-
-                for (String token : tokens)
-                    this.shmemIds.add(Long.valueOf(token).intValue());
-            }
+            this.shmemIds = (shmemIds == null) ? null :
+                F.transform(shmemIds.split(","), new C1<String, Integer>() {
+                    @Override public Integer apply(String s) {
+                        return Long.valueOf(s).intValue();
+                    }
+                });
         }
     }
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/test/java/org/apache/ignite/lang/GridBasicPerformanceTest.java
----------------------------------------------------------------------
diff --git a/modules/core/src/test/java/org/apache/ignite/lang/GridBasicPerformanceTest.java b/modules/core/src/test/java/org/apache/ignite/lang/GridBasicPerformanceTest.java
index 353367e..37e7afe 100644
--- a/modules/core/src/test/java/org/apache/ignite/lang/GridBasicPerformanceTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/lang/GridBasicPerformanceTest.java
@@ -748,14 +748,8 @@ public class GridBasicPerformanceTest {
         for (int i = 0; i < MAX; i++) {
             if (sort)
                 Arrays.binarySearch(arr, ThreadLocalRandom8.current().nextInt(lim));
-            else {
-                int val = ThreadLocalRandom8.current().nextInt(lim);
-
-                for (long arrItem : arr) {
-                    if (arrItem == val)
-                        break;
-                }
-            }
+            else
+                F.contains(arr, ThreadLocalRandom8.current().nextInt(lim));
         }
 
         long time =  System.currentTimeMillis() - start;

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/test/java/org/apache/ignite/lang/GridFuncPerformanceTest.java
----------------------------------------------------------------------
diff --git a/modules/core/src/test/java/org/apache/ignite/lang/GridFuncPerformanceTest.java b/modules/core/src/test/java/org/apache/ignite/lang/GridFuncPerformanceTest.java
new file mode 100644
index 0000000..5afd75f
--- /dev/null
+++ b/modules/core/src/test/java/org/apache/ignite/lang/GridFuncPerformanceTest.java
@@ -0,0 +1,102 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.lang;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import org.apache.ignite.internal.util.lang.GridIterator;
+import org.apache.ignite.internal.util.typedef.F;
+import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
+import org.apache.ignite.testframework.junits.common.GridCommonTest;
+
+/**
+ * GridFunc performance test.
+ */
+@GridCommonTest(group = "Lang")
+public class GridFuncPerformanceTest extends GridCommonAbstractTest {
+    /**
+     *  Creates test.
+     */
+    public GridFuncPerformanceTest() {
+        super(/*start grid*/false);
+    }
+
+    /**
+     *
+     */
+    public void testTransformingIteratorPerformance() {
+        // Warmup.
+        testBody();
+        testBody();
+        testBody();
+
+        long r1 = testBody();
+        long r2 = testBody();
+        long r3 = testBody();
+
+        double r = (r1 + r2 + r3) / 3.f;
+
+        System.out.println("Average result is: " + Math.round(r) + "msec.");
+    }
+
+    /**
+     *
+     * @return Duration of the test.
+     */
+    @SuppressWarnings({"UnusedDeclaration"})
+    private long testBody() {
+        int MAX = 20000000;
+
+        Collection<Integer> l = new ArrayList<>(MAX);
+
+        for (int i = 0; i < MAX / 10; i++)
+            l.add(i);
+
+        IgniteClosure<Integer, Integer> c = new IgniteClosure<Integer, Integer>() {
+            @Override public Integer apply(Integer e) {
+                return e;
+            }
+        };
+
+        IgnitePredicate<Integer> p1 = new IgnitePredicate<Integer>() {
+            @Override public boolean apply(Integer e) {
+                return e % 2 == 0;
+            }
+        };
+        IgnitePredicate<Integer> p2 = new IgnitePredicate<Integer>() {
+            @Override public boolean apply(Integer e) {
+                return e % 2 != 0;
+            }
+        };
+
+        GridIterator<Integer> iter = F.iterator(l, c, true, p1, p2);
+
+        long n = 0;
+
+        long start = System.currentTimeMillis();
+
+        for (Integer i : iter)
+            n += i;
+
+        long duration = System.currentTimeMillis() - start;
+
+        System.out.println("Duration: " + duration + "msec.");
+
+        return duration;
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/test/java/org/apache/ignite/loadtest/GridLoadTestStatistics.java
----------------------------------------------------------------------
diff --git a/modules/core/src/test/java/org/apache/ignite/loadtest/GridLoadTestStatistics.java b/modules/core/src/test/java/org/apache/ignite/loadtest/GridLoadTestStatistics.java
index 10b140e..5d517a4 100644
--- a/modules/core/src/test/java/org/apache/ignite/loadtest/GridLoadTestStatistics.java
+++ b/modules/core/src/test/java/org/apache/ignite/loadtest/GridLoadTestStatistics.java
@@ -107,7 +107,7 @@ public class GridLoadTestStatistics {
                     AtomicInteger cnt;
 
                     synchronized (nodeCnts) {
-                        cnt = F.addIfAbsent(nodeCnts, id, new AtomicInteger());
+                        cnt = F.addIfAbsent(nodeCnts, id, F.newAtomicInt());
                     }
 
                     assert cnt != null;

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2TreeIndex.java
----------------------------------------------------------------------
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2TreeIndex.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2TreeIndex.java
index 9582df0..28adeee 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2TreeIndex.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/opt/GridH2TreeIndex.java
@@ -24,10 +24,10 @@ import java.util.Iterator;
 import java.util.NavigableMap;
 import java.util.concurrent.ConcurrentNavigableMap;
 import java.util.concurrent.ConcurrentSkipListMap;
+import org.apache.ignite.internal.util.GridEmptyIterator;
 import org.apache.ignite.internal.util.offheap.unsafe.GridOffHeapSnapTreeMap;
 import org.apache.ignite.internal.util.offheap.unsafe.GridUnsafeGuard;
 import org.apache.ignite.internal.util.snaptree.SnapTreeMap;
-import org.apache.ignite.internal.util.typedef.F;
 import org.apache.ignite.internal.util.typedef.internal.SB;
 import org.apache.ignite.internal.util.typedef.internal.U;
 import org.apache.ignite.spi.indexing.IndexingQueryFilter;
@@ -319,7 +319,7 @@ public class GridH2TreeIndex extends GridH2IndexBase implements Comparator<GridS
             comparable(last, 1));
 
         if (range == null)
-            return F.emptyIterator();
+            return new GridEmptyIterator<>();
 
         return filter(range.values().iterator());
     }


[3/3] ignite git commit: Revert "IGNITE-2330: Simplified GridFunc."

Posted by vo...@apache.org.
Revert "IGNITE-2330: Simplified GridFunc."

This reverts commit 80579253febd6389dbb3a84706671cc8083df1f2.


Project: http://git-wip-us.apache.org/repos/asf/ignite/repo
Commit: http://git-wip-us.apache.org/repos/asf/ignite/commit/ddbe2d59
Tree: http://git-wip-us.apache.org/repos/asf/ignite/tree/ddbe2d59
Diff: http://git-wip-us.apache.org/repos/asf/ignite/diff/ddbe2d59

Branch: refs/heads/master
Commit: ddbe2d596e5aaf0b04a26c584dfe2ca8a664c570
Parents: cd5cd2e
Author: vozerov-gridgain <vo...@gridgain.com>
Authored: Sun Jan 3 23:49:09 2016 +0400
Committer: vozerov-gridgain <vo...@gridgain.com>
Committed: Sun Jan 3 23:49:09 2016 +0400

----------------------------------------------------------------------
 .../apache/ignite/internal/IgniteKernal.java    |   27 +-
 .../internal/cluster/ClusterGroupAdapter.java   |   10 +-
 .../discovery/GridDiscoveryManager.java         |   19 +-
 .../loadbalancer/GridLoadBalancerManager.java   |    8 +-
 .../processors/cache/GridCacheAdapter.java      |   14 +-
 .../processors/cache/GridCacheContext.java      |    3 +-
 .../cache/GridCacheEvictionManager.java         |    5 +-
 .../processors/cache/GridCacheIoManager.java    |    5 +-
 .../processors/cache/GridCacheIterator.java     |    4 +-
 .../processors/cache/GridCacheKeySet.java       |    2 +-
 .../GridCachePartitionExchangeManager.java      |   12 +-
 .../processors/cache/GridCacheProcessor.java    |    9 +-
 .../processors/cache/GridCacheSwapManager.java  |    7 +-
 .../processors/cache/GridCacheUtils.java        |   92 -
 .../cache/GridCacheValueCollection.java         |    5 +-
 .../processors/cache/IgniteCacheProxy.java      |    4 +-
 .../dht/GridClientPartitionTopology.java        |    3 +-
 .../dht/GridDhtPartitionTopologyImpl.java       |    3 +-
 .../dht/GridDhtTransactionalCacheAdapter.java   |    3 +-
 .../distributed/dht/GridDhtTxLocalAdapter.java  |    3 +-
 .../distributed/dht/GridDhtTxPrepareFuture.java |    5 +-
 .../dht/atomic/GridDhtAtomicCache.java          |   21 +-
 .../dht/preloader/GridDhtForceKeysFuture.java   |    8 +-
 .../distributed/near/GridNearCacheAdapter.java  |   11 +-
 .../local/atomic/GridLocalAtomicCache.java      |   17 +-
 .../GridCacheAtomicStampedImpl.java             |    5 +-
 .../internal/processors/igfs/IgfsProcessor.java |    8 +-
 .../dotnet/PlatformDotNetCacheStore.java        |    4 +-
 .../top/GridTopologyCommandHandler.java         |    3 +-
 .../org/apache/ignite/internal/util/F0.java     |  325 +++-
 .../internal/util/GridExecutionStatistics.java  |    4 +-
 .../ignite/internal/util/IgniteUtils.java       |    4 +-
 .../ignite/internal/util/lang/GridFunc.java     | 1764 ++++++++++++++----
 .../ignite/internal/util/lang/GridTuple3.java   |    1 +
 .../ignite/internal/util/lang/GridTuple4.java   |    1 +
 .../ignite/internal/util/lang/GridTuple5.java   |    1 +
 .../ignite/internal/util/lang/GridTuple6.java   |    1 +
 .../ignite/internal/util/lang/GridTupleV.java   |    1 +
 .../java/org/apache/ignite/lang/IgniteUuid.java |    2 +-
 .../memory/MemoryEventStorageSpi.java           |    1 -
 .../cache/GridCacheLuceneQueryIndexTest.java    |    4 +-
 .../distributed/GridCacheEventAbstractTest.java |    2 +-
 .../IpcSharedMemoryCrashDetectionSelfTest.java  |   16 +-
 .../ignite/lang/GridBasicPerformanceTest.java   |   10 +-
 .../ignite/lang/GridFuncPerformanceTest.java    |  102 +
 .../ignite/loadtest/GridLoadTestStatistics.java |    2 +-
 .../query/h2/opt/GridH2TreeIndex.java           |    4 +-
 47 files changed, 1988 insertions(+), 577 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/IgniteKernal.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/IgniteKernal.java b/modules/core/src/main/java/org/apache/ignite/internal/IgniteKernal.java
index 7fc0313..14b5816 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/IgniteKernal.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/IgniteKernal.java
@@ -589,16 +589,8 @@ public class IgniteKernal implements IgniteEx, IgniteMXBean, Externalizable {
     @Override public List<String> getLifecycleBeansFormatted() {
         LifecycleBean[] beans = cfg.getLifecycleBeans();
 
-        if (F.isEmpty(beans))
-            return Collections.emptyList();
-        else {
-            List<String> res = new ArrayList<>(beans.length);
-
-            for (LifecycleBean bean : beans)
-                res.add(String.valueOf(bean));
-
-            return res;
-        }
+        return F.isEmpty(beans) ? Collections.<String>emptyList() :
+            (List<String>)F.transform(beans, F.<LifecycleBean>string());
     }
 
     /**
@@ -2277,19 +2269,16 @@ public class IgniteKernal implements IgniteEx, IgniteMXBean, Externalizable {
         Collection<Object> objs = new ArrayList<>();
 
         if (!F.isEmpty(cfg.getLifecycleBeans()))
-            Collections.addAll(objs, cfg.getLifecycleBeans());
+            F.copy(objs, cfg.getLifecycleBeans());
 
         if (!F.isEmpty(cfg.getSegmentationResolvers()))
-            Collections.addAll(objs, cfg.getSegmentationResolvers());
+            F.copy(objs, cfg.getSegmentationResolvers());
 
-        if (cfg.getConnectorConfiguration() != null) {
-            objs.add(cfg.getConnectorConfiguration().getMessageInterceptor());
-            objs.add(cfg.getConnectorConfiguration().getSslContextFactory());
-        }
+        if (cfg.getConnectorConfiguration() != null)
+            F.copy(objs, cfg.getConnectorConfiguration().getMessageInterceptor(),
+                cfg.getConnectorConfiguration().getSslContextFactory());
 
-        objs.add(cfg.getMarshaller());
-        objs.add(cfg.getGridLogger());
-        objs.add(cfg.getMBeanServer());
+        F.copy(objs, cfg.getMarshaller(), cfg.getGridLogger(), cfg.getMBeanServer());
 
         return objs;
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/cluster/ClusterGroupAdapter.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/cluster/ClusterGroupAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/cluster/ClusterGroupAdapter.java
index a153b83..75168a1 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/cluster/ClusterGroupAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/cluster/ClusterGroupAdapter.java
@@ -51,7 +51,6 @@ import org.apache.ignite.internal.IgniteServicesImpl;
 import org.apache.ignite.internal.IgnitionEx;
 import org.apache.ignite.internal.executor.GridExecutorService;
 import org.apache.ignite.internal.managers.discovery.GridDiscoveryManager;
-import org.apache.ignite.internal.util.lang.GridNodePredicate;
 import org.apache.ignite.internal.util.typedef.F;
 import org.apache.ignite.internal.util.typedef.internal.A;
 import org.apache.ignite.internal.util.typedef.internal.U;
@@ -368,7 +367,8 @@ public class ClusterGroupAdapter implements ClusterGroupEx, Externalizable {
         guard();
 
         try {
-            ctx.resource().injectGeneric(p);
+            if (p != null)
+                ctx.resource().injectGeneric(p);
 
             return new ClusterGroupAdapter(ctx, subjId, this.p != null ? F.and(p, this.p) : p);
         }
@@ -703,7 +703,6 @@ public class ClusterGroupAdapter implements ClusterGroupEx, Externalizable {
     }
 
     /** {@inheritDoc} */
-    @SuppressWarnings("unchecked")
     @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
         gridName = U.readString(in);
         subjId = U.readUuid(in);
@@ -920,7 +919,7 @@ public class ClusterGroupAdapter implements ClusterGroupEx, Externalizable {
 
                 ClusterNode node = isOldest ? U.oldest(super.nodes(), null) : U.youngest(super.nodes(), null);
 
-                IgnitePredicate<ClusterNode> p = new GridNodePredicate(node);
+                IgnitePredicate<ClusterNode> p = F.nodeForNodes(node);
 
                 state = new AgeClusterGroupState(node, p, lastTopVer);
             }
@@ -962,7 +961,8 @@ public class ClusterGroupAdapter implements ClusterGroupEx, Externalizable {
             guard();
 
             try {
-                ctx.resource().injectGeneric(p);
+                if (p != null)
+                    ctx.resource().injectGeneric(p);
 
                 return new ClusterGroupAdapter(ctx, this.subjId, new GroupPredicate(this, p));
             }

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/managers/discovery/GridDiscoveryManager.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/managers/discovery/GridDiscoveryManager.java b/modules/core/src/main/java/org/apache/ignite/internal/managers/discovery/GridDiscoveryManager.java
index 844fd0f..72a2bef 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/managers/discovery/GridDiscoveryManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/managers/discovery/GridDiscoveryManager.java
@@ -30,6 +30,7 @@ import java.util.ArrayDeque;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.Comparator;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
@@ -78,6 +79,7 @@ import org.apache.ignite.internal.processors.cache.GridCacheAdapter;
 import org.apache.ignite.internal.processors.jobmetrics.GridJobMetrics;
 import org.apache.ignite.internal.processors.security.SecurityContext;
 import org.apache.ignite.internal.processors.timeout.GridTimeoutProcessor;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridBoundedConcurrentOrderedMap;
 import org.apache.ignite.internal.util.GridSpinBusyLock;
 import org.apache.ignite.internal.util.future.GridFinishedFuture;
@@ -1315,26 +1317,13 @@ public class GridDiscoveryManager extends GridManagerAdapter<DiscoverySpi> {
     }
 
     /**
-     * Gets collection of node for given node IDs.
-     *
-     * @param ids Ids to include.
-     * @return Collection with all alive nodes for given IDs.
-     */
-    public Collection<ClusterNode> nodes(@Nullable Collection<UUID> ids) {
-        return F.isEmpty(ids) ? Collections.<ClusterNode>emptyList() :
-            F.view(
-                F.viewReadOnly(ids, U.id2Node(ctx)),
-                F.notNull());
-    }
-
-    /**
      * Gets collection of node for given node IDs and predicates.
      *
      * @param ids Ids to include.
      * @param p Filter for IDs.
      * @return Collection with all alive nodes for given IDs.
      */
-    public Collection<ClusterNode> nodes(@Nullable Collection<UUID> ids, IgnitePredicate<UUID> p) {
+    public Collection<ClusterNode> nodes(@Nullable Collection<UUID> ids, IgnitePredicate<UUID>... p) {
         return F.isEmpty(ids) ? Collections.<ClusterNode>emptyList() :
             F.view(
                 F.viewReadOnly(ids, U.id2Node(ctx), p),
@@ -2576,7 +2565,7 @@ public class GridDiscoveryManager extends GridManagerAdapter<DiscoverySpi> {
             nearEnabledCaches = Collections.unmodifiableSet(nearEnabledSet);
 
             daemonNodes = Collections.unmodifiableList(new ArrayList<>(
-                F.view(F.concat(false, loc, rmts), F.not(daemonFilter))));
+                F.view(F.concat(false, loc, rmts), F0.not(daemonFilter))));
 
             Map<UUID, ClusterNode> nodeMap = new HashMap<>(allNodes().size() + daemonNodes.size(), 1.0f);
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/managers/loadbalancer/GridLoadBalancerManager.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/managers/loadbalancer/GridLoadBalancerManager.java b/modules/core/src/main/java/org/apache/ignite/internal/managers/loadbalancer/GridLoadBalancerManager.java
index efe09b0..631168b 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/managers/loadbalancer/GridLoadBalancerManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/managers/loadbalancer/GridLoadBalancerManager.java
@@ -18,7 +18,6 @@
 package org.apache.ignite.internal.managers.loadbalancer;
 
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.IgniteException;
@@ -93,12 +92,7 @@ public class GridLoadBalancerManager extends GridManagerAdapter<LoadBalancingSpi
                 if (F.isEmpty(exclNodes))
                     return GridLoadBalancerManager.this.getBalancedNode(ses, top, job);
 
-                List<ClusterNode> nodes = new LinkedList<>();
-
-                for (ClusterNode topNode : top) {
-                    if (!exclNodes.contains(topNode))
-                        nodes.add(topNode);
-                }
+                List<ClusterNode> nodes = F.loseList(top, true, exclNodes);
 
                 if (nodes.isEmpty())
                     return null;

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheAdapter.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheAdapter.java
index a4cf737..5d4c386 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheAdapter.java
@@ -106,6 +106,7 @@ import org.apache.ignite.internal.util.future.GridFutureAdapter;
 import org.apache.ignite.internal.util.lang.GridClosureException;
 import org.apache.ignite.internal.util.lang.GridTriple;
 import org.apache.ignite.internal.util.tostring.GridToStringExclude;
+import org.apache.ignite.internal.util.typedef.C1;
 import org.apache.ignite.internal.util.typedef.C2;
 import org.apache.ignite.internal.util.typedef.CI1;
 import org.apache.ignite.internal.util.typedef.CI2;
@@ -2149,7 +2150,12 @@ public abstract class GridCacheAdapter<K, V> implements IgniteInternalCache<K, V
         return syncOp(new SyncOp<Map<K, EntryProcessorResult<T>>>(keys.size() == 1) {
             @Nullable @Override public Map<K, EntryProcessorResult<T>> op(IgniteTxLocalAdapter tx)
                 throws IgniteCheckedException {
-                Map<? extends K, EntryProcessor<K, V, Object>> invokeMap = CU.invokeMap(keys, entryProcessor);
+                Map<? extends K, EntryProcessor<K, V, Object>> invokeMap = F.viewAsMap(keys,
+                    new C1<K, EntryProcessor<K, V, Object>>() {
+                            @Override public EntryProcessor apply(K k) {
+                            return entryProcessor;
+                        }
+                    });
 
                 IgniteInternalFuture<GridCacheReturn> fut = tx.invokeAsync(ctx, invokeMap, args);
 
@@ -2216,7 +2222,11 @@ public abstract class GridCacheAdapter<K, V> implements IgniteInternalCache<K, V
 
         IgniteInternalFuture<?> fut = asyncOp(new AsyncInOp(keys) {
             @Override public IgniteInternalFuture<GridCacheReturn> inOp(IgniteTxLocalAdapter tx) {
-                Map<? extends K, EntryProcessor<K, V, Object>> invokeMap = CU.invokeMap(keys, entryProcessor);
+                Map<? extends K, EntryProcessor<K, V, Object>> invokeMap = F.viewAsMap(keys, new C1<K, EntryProcessor<K, V, Object>>() {
+                    @Override public EntryProcessor apply(K k) {
+                        return entryProcessor;
+                    }
+                });
 
                 return tx.invokeAsync(ctx, invokeMap, args);
             }

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheContext.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheContext.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheContext.java
index ef49567..c10ebf3 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheContext.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheContext.java
@@ -85,6 +85,7 @@ import org.apache.ignite.internal.processors.closure.GridClosureProcessor;
 import org.apache.ignite.internal.processors.offheap.GridOffHeapProcessor;
 import org.apache.ignite.internal.processors.plugin.CachePluginManager;
 import org.apache.ignite.internal.processors.timeout.GridTimeoutProcessor;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.lang.GridFunc;
 import org.apache.ignite.internal.util.offheap.unsafe.GridUnsafeMemory;
 import org.apache.ignite.internal.util.tostring.GridToStringExclude;
@@ -1511,7 +1512,7 @@ public class GridCacheContext<K, V> implements Externalizable {
             Collection<ClusterNode> nearNodes = null;
 
             if (!F.isEmpty(readers)) {
-                nearNodes = discovery().nodes(readers, F.notEqualTo(nearNodeId));
+                nearNodes = discovery().nodes(readers, F0.notEqualTo(nearNodeId));
 
                 if (log.isDebugEnabled())
                     log.debug("Mapping entry to near nodes [nodes=" + U.nodeIds(nearNodes) + ", entry=" + entry + ']');

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheEvictionManager.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheEvictionManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheEvictionManager.java
index f542f4b..845e204 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheEvictionManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheEvictionManager.java
@@ -63,6 +63,7 @@ import org.apache.ignite.internal.processors.cache.transactions.IgniteTxEntry;
 import org.apache.ignite.internal.processors.cache.version.GridCacheVersion;
 import org.apache.ignite.internal.processors.timeout.GridTimeoutObject;
 import org.apache.ignite.internal.processors.timeout.GridTimeoutObjectAdapter;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridBusyLock;
 import org.apache.ignite.internal.util.GridConcurrentHashSet;
 import org.apache.ignite.internal.util.GridUnsafe;
@@ -1309,7 +1310,7 @@ public class GridCacheEvictionManager extends GridCacheManagerAdapter {
                 try {
                     GridCacheVersion ver = e.version();
 
-                    return info.version().equals(ver) && F.isAll(e, info.filter());
+                    return info.version().equals(ver) && F.isAll(info.filter());
                 }
                 catch (GridCacheEntryRemovedException ignored) {
                     return false;
@@ -1340,7 +1341,7 @@ public class GridCacheEvictionManager extends GridCacheManagerAdapter {
         Collection<ClusterNode> backups;
 
         if (evictSync)
-            backups = F.view(cctx.dht().topology().nodes(entry.partition(), topVer), F.notEqualTo(cctx.localNode()));
+            backups = F.view(cctx.dht().topology().nodes(entry.partition(), topVer), F0.notEqualTo(cctx.localNode()));
         else
             backups = Collections.emptySet();
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheIoManager.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheIoManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheIoManager.java
index 4c9cdf2..0aa8b1b 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheIoManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheIoManager.java
@@ -57,6 +57,7 @@ import org.apache.ignite.internal.processors.cache.distributed.near.GridNearTxPr
 import org.apache.ignite.internal.processors.cache.distributed.near.GridNearTxPrepareResponse;
 import org.apache.ignite.internal.processors.cache.query.GridCacheQueryRequest;
 import org.apache.ignite.internal.processors.cache.query.GridCacheQueryResponse;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridLeanSet;
 import org.apache.ignite.internal.util.GridSpinReadWriteLock;
 import org.apache.ignite.internal.util.typedef.CI1;
@@ -730,7 +731,7 @@ public class GridCacheIoManager extends GridCacheSharedManagerAdapter {
                 }
 
                 if (added) {
-                    if (!F.exist(F.nodeIds(nodes), F.not(F.contains(leftIds)))) {
+                    if (!F.exist(F.nodeIds(nodes), F0.not(F.contains(leftIds)))) {
                         if (log.isDebugEnabled())
                             log.debug("Message will not be sent because all nodes left topology [msg=" + msg +
                                 ", nodes=" + U.toShortString(nodes) + ']');
@@ -766,7 +767,7 @@ public class GridCacheIoManager extends GridCacheSharedManagerAdapter {
                     U.sleep(retryDelay);
                 }
 
-                if (!F.exist(F.nodeIds(nodes), F.not(F.contains(leftIds)))) {
+                if (!F.exist(F.nodeIds(nodes), F0.not(F.contains(leftIds)))) {
                     if (log.isDebugEnabled())
                         log.debug("Message will not be sent because all nodes left topology [msg=" + msg + ", nodes=" +
                             U.toShortString(nodes) + ']');

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheIterator.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheIterator.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheIterator.java
index e4a471c..19da4a8 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheIterator.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheIterator.java
@@ -19,8 +19,6 @@ package org.apache.ignite.internal.processors.cache;
 
 import java.util.Iterator;
 import javax.cache.Cache;
-
-import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridSerializableIterator;
 import org.apache.ignite.internal.util.typedef.F;
 import org.apache.ignite.lang.IgniteClosure;
@@ -59,7 +57,7 @@ public class GridCacheIterator<K, V, T> implements GridSerializableIterator<T> {
     ) {
         this.cctx = cctx;
 
-        it = F.identityIterator(c, F0.and(filter));
+        it = F.iterator0(c, false, filter);
 
         this.trans = trans;
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheKeySet.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheKeySet.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheKeySet.java
index af0c704..6d18b7d 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheKeySet.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheKeySet.java
@@ -66,7 +66,7 @@ public class GridCacheKeySet<K, V> extends GridSerializableSet<K> {
 
     /** {@inheritDoc} */
     @Override public Iterator<K> iterator() {
-        return new GridCacheIterator<>(ctx, map.values(), CU.<K, V>cacheEntry2Key(), filter);
+        return new GridCacheIterator<>(ctx, map.values(), F.<K, V>cacheEntry2Key(), filter);
     }
 
     /** {@inheritDoc} */

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCachePartitionExchangeManager.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCachePartitionExchangeManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCachePartitionExchangeManager.java
index 4732597..a0f7f93 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCachePartitionExchangeManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCachePartitionExchangeManager.java
@@ -80,7 +80,6 @@ import org.apache.ignite.internal.util.typedef.internal.S;
 import org.apache.ignite.internal.util.typedef.internal.U;
 import org.apache.ignite.internal.util.worker.GridWorker;
 import org.apache.ignite.lang.IgniteBiInClosure;
-import org.apache.ignite.lang.IgnitePredicate;
 import org.apache.ignite.lang.IgniteProductVersion;
 import org.apache.ignite.lang.IgniteUuid;
 import org.apache.ignite.thread.IgniteThread;
@@ -1271,16 +1270,9 @@ public class GridCachePartitionExchangeManager<K, V> extends GridCacheSharedMana
                     }
 
                     // After workers line up and before preloading starts we initialize all futures.
-                    if (log.isDebugEnabled()) {
-                        IgnitePredicate p = new IgnitePredicate<IgniteInternalFuture<?>>() {
-                            @Override public boolean apply(IgniteInternalFuture<?> f) {
-                                return !f.isDone();
-                            }
-                        };
-
+                    if (log.isDebugEnabled())
                         log.debug("Before waiting for exchange futures [futs" +
-                            F.view(exchFuts.values(), p) + ", worker=" + this + ']');
-                    }
+                            F.view(exchFuts.values(), F.unfinishedFutures()) + ", worker=" + this + ']');
 
                     // Take next exchange future.
                     exchFut = poll(futQ, timeout, this);

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheProcessor.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheProcessor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheProcessor.java
index f6fc9d4..ff02e70 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheProcessor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheProcessor.java
@@ -96,6 +96,7 @@ import org.apache.ignite.internal.processors.cache.transactions.IgniteTxManager;
 import org.apache.ignite.internal.processors.cache.version.GridCacheVersionManager;
 import org.apache.ignite.internal.processors.plugin.CachePluginManager;
 import org.apache.ignite.internal.processors.query.GridQueryProcessor;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.future.GridCompoundFuture;
 import org.apache.ignite.internal.util.future.GridFinishedFuture;
 import org.apache.ignite.internal.util.future.GridFutureAdapter;
@@ -1159,12 +1160,8 @@ public class GridCacheProcessor extends GridProcessorAdapter {
                 log.debug("Executed onKernalStart() callback for DHT cache: " + dht.name());
         }
 
-        Collection<GridCacheManager> excluded = dhtExcludes(ctx);
-
-        for (GridCacheManager mgr : ctx.managers()) {
-            if (!excluded.contains(mgr))
-                mgr.onKernalStart();
-        }
+        for (GridCacheManager mgr : F.view(ctx.managers(), F0.notContains(dhtExcludes(ctx))))
+            mgr.onKernalStart();
 
         cache.onKernalStart();
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheSwapManager.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheSwapManager.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheSwapManager.java
index 4490f63..37b5e15 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheSwapManager.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheSwapManager.java
@@ -42,6 +42,7 @@ import org.apache.ignite.internal.processors.offheap.GridOffHeapProcessor;
 import org.apache.ignite.internal.util.GridCloseableIteratorAdapter;
 import org.apache.ignite.internal.util.GridConcurrentHashSet;
 import org.apache.ignite.internal.util.GridEmptyCloseableIterator;
+import org.apache.ignite.internal.util.GridEmptyIterator;
 import org.apache.ignite.internal.util.GridWeakIterator;
 import org.apache.ignite.internal.util.lang.GridCloseableIterator;
 import org.apache.ignite.internal.util.lang.GridTuple;
@@ -1580,7 +1581,7 @@ public class GridCacheSwapManager extends GridCacheManagerAdapter {
      */
     public <K, V> Iterator<Map.Entry<K, V>> lazySwapIterator() throws IgniteCheckedException {
         if (!swapEnabled)
-            return F.emptyIterator();
+            return new GridEmptyIterator<>();
 
         return lazyIterator(cctx.gridSwap().rawIterator(spaceName));
     }
@@ -1671,7 +1672,7 @@ public class GridCacheSwapManager extends GridCacheManagerAdapter {
     private <K, V> Iterator<Map.Entry<K, V>> lazyIterator(
         final GridCloseableIterator<? extends Map.Entry<byte[], byte[]>> it) {
         if (it == null)
-            return F.emptyIterator();
+            return new GridEmptyIterator<>();
 
         checkIteratorQueue();
 
@@ -1742,7 +1743,7 @@ public class GridCacheSwapManager extends GridCacheManagerAdapter {
     private Iterator<KeyCacheObject> keyIterator(
         final GridCloseableIterator<? extends Map.Entry<byte[], byte[]>> it) {
         if (it == null)
-            return F.emptyIterator();
+            return new GridEmptyIterator<>();
 
         checkIteratorQueue();
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheUtils.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheUtils.java
index b7baf7e..51f6dcd 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheUtils.java
@@ -43,8 +43,6 @@ import javax.cache.configuration.Factory;
 import javax.cache.expiry.Duration;
 import javax.cache.expiry.ExpiryPolicy;
 import javax.cache.integration.CacheWriterException;
-import javax.cache.processor.EntryProcessor;
-
 import org.apache.ignite.Ignite;
 import org.apache.ignite.IgniteCache;
 import org.apache.ignite.IgniteCheckedException;
@@ -286,41 +284,6 @@ public class GridCacheUtils {
         }
     };
 
-    /** */
-    private static final IgniteClosure CACHE_ENTRY_KEY = new IgniteClosure() {
-        @Override public Object apply(Object o) {
-            return ((Cache.Entry)o).getKey();
-        }
-
-        @Override public String toString() {
-            return "Map entry to key transformer closure.";
-        }
-    };
-
-    /** */
-    private static final IgniteClosure CACHE_ENTRY_VAL_GET = new IgniteClosure() {
-        @SuppressWarnings({"unchecked"})
-        @Nullable @Override public Object apply(Object o) {
-            return ((Cache.Entry)o).getValue();
-        }
-
-        @Override public String toString() {
-            return "Cache entry to get-value transformer closure.";
-        }
-    };
-
-    /** */
-    private static final IgnitePredicate CACHE_ENTRY_HAS_PEEK_VAL = new IgnitePredicate() {
-        @SuppressWarnings({"unchecked"})
-        @Override public boolean apply(Object o) {
-            return ((Cache.Entry)o).getValue() != null;
-        }
-
-        @Override public String toString() {
-            return "Cache entry has-peek-value predicate.";
-        }
-    };
-
     /**
      * Ensure singleton.
      */
@@ -1900,59 +1863,4 @@ public class GridCacheUtils {
 
         return res;
     }
-
-    /**
-     * Create invoke map for the given key set. All provided values will be set to the passed entry processor.
-     *
-     * @param keys Keys.
-     * @param entryProc Entry processor.
-     * @return Invoke map.
-     */
-    @SuppressWarnings("unchecked")
-    public static <K, V, T> Map<? extends K, EntryProcessor<K, V, Object>> invokeMap(
-        final Set<? extends K> keys, final EntryProcessor<K, V, T> entryProc) {
-        return F.viewAsMap(keys,
-            new C1<K, EntryProcessor<K, V, Object>>() {
-                @Override public EntryProcessor apply(K k) {
-                    return entryProc;
-                }
-            });
-    }
-
-    /**
-     * Gets closure that returns key for cache entry. The closure internally
-     * delegates to {@link javax.cache.Cache.Entry#getKey()} method.
-     *
-     * @param <K> Key type.
-     * @return Closure that returns key for an entry.
-     */
-    @SuppressWarnings({"unchecked"})
-    public static <K, V> IgniteClosure<Cache.Entry<K, V>, K> cacheEntry2Key() {
-        return (IgniteClosure<Cache.Entry<K, V>, K>)CACHE_ENTRY_KEY;
-    }
-
-    /**
-     * Gets closure that returns value for an entry. The closure internally
-     * delegates to {@link javax.cache.Cache.Entry#get(Object)} method.
-     *
-     * @param <K> Key type.
-     * @param <V> Value type.
-     * @return Closure that returns value for an entry.
-     */
-    @SuppressWarnings({"unchecked"})
-    public static <K, V> IgniteClosure<Cache.Entry<K, V>, V> cacheEntry2Get() {
-        return (IgniteClosure<Cache.Entry<K, V>, V>)CACHE_ENTRY_VAL_GET;
-    }
-
-    /**
-     * Gets predicate which returns {@code true} if entry has peek value.
-     *
-     * @param <K> Cache key type.
-     * @param <V> Cache value type.
-     * @return Predicate which returns {@code true} if entry has peek value.
-     */
-    @SuppressWarnings({"unchecked"})
-    public static <K, V> IgnitePredicate<Cache.Entry<K, V>> cacheHasPeekValue() {
-        return (IgnitePredicate<Cache.Entry<K, V>>)CACHE_ENTRY_HAS_PEEK_VAL;
-    }
 }

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheValueCollection.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheValueCollection.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheValueCollection.java
index 68b54b3..2d1686e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheValueCollection.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/GridCacheValueCollection.java
@@ -27,7 +27,6 @@ import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridSerializableCollection;
 import org.apache.ignite.internal.util.typedef.F;
 import org.apache.ignite.internal.util.typedef.internal.A;
-import org.apache.ignite.internal.util.typedef.internal.CU;
 import org.apache.ignite.lang.IgnitePredicate;
 import org.jetbrains.annotations.Nullable;
 
@@ -73,8 +72,8 @@ public class GridCacheValueCollection<K, V> extends GridSerializableCollection<V
         return new GridCacheIterator<K, V, V>(
             ctx,
             map.values(),
-            CU.<K, V>cacheEntry2Get(),
-            ctx.vararg(F0.and(filter, CU.<K, V>cacheHasPeekValue()))
+            F.<K, V>cacheEntry2Get(),
+            ctx.vararg(F0.and(filter, F.<K, V>cacheHasPeekValue()))
         ) {
             {
                 advance();

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheProxy.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheProxy.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheProxy.java
index a6e0ea8..27a7587 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheProxy.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheProxy.java
@@ -69,6 +69,7 @@ import org.apache.ignite.internal.processors.cache.query.CacheQuery;
 import org.apache.ignite.internal.processors.cache.query.CacheQueryFuture;
 import org.apache.ignite.internal.processors.query.GridQueryProcessor;
 import org.apache.ignite.internal.util.GridCloseableIteratorAdapter;
+import org.apache.ignite.internal.util.GridEmptyIterator;
 import org.apache.ignite.internal.util.future.IgniteFutureImpl;
 import org.apache.ignite.internal.util.lang.GridClosureException;
 import org.apache.ignite.internal.util.lang.IgniteOutClosureX;
@@ -76,7 +77,6 @@ import org.apache.ignite.internal.util.tostring.GridToStringExclude;
 import org.apache.ignite.internal.util.tostring.GridToStringInclude;
 import org.apache.ignite.internal.util.typedef.CI1;
 import org.apache.ignite.internal.util.typedef.CX1;
-import org.apache.ignite.internal.util.typedef.F;
 import org.apache.ignite.internal.util.typedef.internal.A;
 import org.apache.ignite.internal.util.typedef.internal.CU;
 import org.apache.ignite.internal.util.typedef.internal.S;
@@ -579,7 +579,7 @@ public class IgniteCacheProxy<K, V> extends AsyncSupportAdapter<IgniteCache<K, V
 
             return new QueryCursor<Cache.Entry<K, V>>() {
                 @Override public Iterator<Cache.Entry<K, V>> iterator() {
-                    return cur != null ? cur.iterator() : F.<Cache.Entry<K, V>>emptyIterator();
+                    return cur != null ? cur.iterator() : new GridEmptyIterator<Cache.Entry<K, V>>();
                 }
 
                 @Override public List<Cache.Entry<K, V>> getAll() {

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridClientPartitionTopology.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridClientPartitionTopology.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridClientPartitionTopology.java
index 9c18ad0..8aef5ad 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridClientPartitionTopology.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridClientPartitionTopology.java
@@ -37,6 +37,7 @@ import org.apache.ignite.internal.processors.cache.distributed.dht.preloader.Gri
 import org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionFullMap;
 import org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionMap2;
 import org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionsExchangeFuture;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridAtomicLong;
 import org.apache.ignite.internal.util.tostring.GridToStringExclude;
 import org.apache.ignite.internal.util.typedef.F;
@@ -697,7 +698,7 @@ public class GridClientPartitionTopology implements GridDhtPartitionTopology {
 
             // Remove obsolete mappings.
             if (cur != null) {
-                for (Integer p : F.view(cur.keySet(), F.notIn(parts.keySet()))) {
+                for (Integer p : F.view(cur.keySet(), F0.notIn(parts.keySet()))) {
                     Set<UUID> ids = part2node.get(p);
 
                     if (ids != null)

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtPartitionTopologyImpl.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtPartitionTopologyImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtPartitionTopologyImpl.java
index cdf0fc2..a0709c5 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtPartitionTopologyImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtPartitionTopologyImpl.java
@@ -41,6 +41,7 @@ import org.apache.ignite.internal.processors.cache.distributed.dht.preloader.Gri
 import org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionFullMap;
 import org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionMap2;
 import org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionsExchangeFuture;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridAtomicLong;
 import org.apache.ignite.internal.util.tostring.GridToStringExclude;
 import org.apache.ignite.internal.util.typedef.F;
@@ -1054,7 +1055,7 @@ class GridDhtPartitionTopologyImpl implements GridDhtPartitionTopology {
 
             // Remove obsolete mappings.
             if (cur != null) {
-                for (Integer p : F.view(cur.keySet(), F.notIn(parts.keySet()))) {
+                for (Integer p : F.view(cur.keySet(), F0.notIn(parts.keySet()))) {
                     Set<UUID> ids = part2node.get(p);
 
                     if (ids != null)

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTransactionalCacheAdapter.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTransactionalCacheAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTransactionalCacheAdapter.java
index 2b40436..ae24ed1 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTransactionalCacheAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTransactionalCacheAdapter.java
@@ -60,6 +60,7 @@ import org.apache.ignite.internal.processors.cache.transactions.IgniteTxKey;
 import org.apache.ignite.internal.processors.cache.transactions.IgniteTxLocalEx;
 import org.apache.ignite.internal.processors.cache.version.GridCacheVersion;
 import org.apache.ignite.internal.transactions.IgniteTxRollbackCheckedException;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridLeanSet;
 import org.apache.ignite.internal.util.future.GridFinishedFuture;
 import org.apache.ignite.internal.util.lang.GridClosureException;
@@ -1381,7 +1382,7 @@ public abstract class GridDhtTransactionalCacheAdapter<K, V> extends GridDhtCach
         Collection<ClusterNode> nearNodes = null;
 
         if (!F.isEmpty(readers)) {
-            nearNodes = ctx.discovery().nodes(readers, F.not(F.idForNodeId(nodeId)));
+            nearNodes = ctx.discovery().nodes(readers, F0.not(F.idForNodeId(nodeId)));
 
             if (log.isDebugEnabled())
                 log.debug("Mapping entry to near nodes [nodes=" + U.toShortString(nearNodes) + ", entry=" + cached +

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxLocalAdapter.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxLocalAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxLocalAdapter.java
index 1fe3ae2..534a560 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxLocalAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxLocalAdapter.java
@@ -42,6 +42,7 @@ import org.apache.ignite.internal.processors.cache.transactions.IgniteInternalTx
 import org.apache.ignite.internal.processors.cache.transactions.IgniteTxEntry;
 import org.apache.ignite.internal.processors.cache.transactions.IgniteTxLocalAdapter;
 import org.apache.ignite.internal.processors.cache.version.GridCacheVersion;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridLeanMap;
 import org.apache.ignite.internal.util.GridLeanSet;
 import org.apache.ignite.internal.util.future.GridEmbeddedFuture;
@@ -640,7 +641,7 @@ public abstract class GridDhtTxLocalAdapter extends IgniteTxLocalAdapter {
             // Otherwise, during rollback we will not know whether locks need
             // to be rolled back.
             // Loose all skipped and previously locked (we cannot reenter locks here).
-            final Collection<KeyCacheObject> passedKeys = skipped != null ? F.view(keys, F.notIn(skipped)) : keys;
+            final Collection<KeyCacheObject> passedKeys = skipped != null ? F.view(keys, F0.notIn(skipped)) : keys;
 
             if (log.isDebugEnabled())
                 log.debug("Lock keys: " + passedKeys);

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxPrepareFuture.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxPrepareFuture.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxPrepareFuture.java
index 23fdbf5..d8b2f37 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxPrepareFuture.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/GridDhtTxPrepareFuture.java
@@ -61,6 +61,7 @@ import org.apache.ignite.internal.processors.cache.version.GridCacheVersion;
 import org.apache.ignite.internal.processors.dr.GridDrType;
 import org.apache.ignite.internal.transactions.IgniteTxHeuristicCheckedException;
 import org.apache.ignite.internal.transactions.IgniteTxOptimisticCheckedException;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridLeanSet;
 import org.apache.ignite.internal.util.future.GridCompoundFuture;
 import org.apache.ignite.internal.util.future.GridFutureAdapter;
@@ -1303,14 +1304,14 @@ public final class GridDhtTxPrepareFuture extends GridCompoundFuture<IgniteInter
 
                 if (!F.isEmpty(readers)) {
                     Collection<ClusterNode> nearNodes =
-                        cctx.discovery().nodes(readers, F.not(F.idForNodeId(tx.nearNodeId())));
+                        cctx.discovery().nodes(readers, F0.not(F.idForNodeId(tx.nearNodeId())));
 
                     if (log.isDebugEnabled())
                         log.debug("Mapping entry to near nodes [nodes=" + U.toShortString(nearNodes) +
                             ", entry=" + entry + ']');
 
                     // Exclude DHT nodes.
-                    map(entry, F.view(nearNodes, F.notIn(dhtNodes)), nearMap);
+                    map(entry, F.view(nearNodes, F0.notIn(dhtNodes)), nearMap);
                 }
                 else if (log.isDebugEnabled())
                     log.debug("Entry has no near readers: " + entry);

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/atomic/GridDhtAtomicCache.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/atomic/GridDhtAtomicCache.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/atomic/GridDhtAtomicCache.java
index e0b108b..393413e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/atomic/GridDhtAtomicCache.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/atomic/GridDhtAtomicCache.java
@@ -77,10 +77,12 @@ import org.apache.ignite.internal.processors.cache.distributed.near.GridNearSing
 import org.apache.ignite.internal.processors.cache.dr.GridCacheDrExpirationInfo;
 import org.apache.ignite.internal.processors.cache.dr.GridCacheDrInfo;
 import org.apache.ignite.internal.processors.cache.transactions.IgniteTxLocalEx;
+import org.apache.ignite.internal.processors.cache.transactions.IgniteTxManager;
 import org.apache.ignite.internal.processors.cache.version.GridCacheVersion;
 import org.apache.ignite.internal.processors.cache.version.GridCacheVersionConflictContext;
 import org.apache.ignite.internal.processors.cache.version.GridCacheVersionEx;
 import org.apache.ignite.internal.processors.timeout.GridTimeoutObject;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridUnsafe;
 import org.apache.ignite.internal.util.future.GridEmbeddedFuture;
 import org.apache.ignite.internal.util.future.GridFinishedFuture;
@@ -410,9 +412,9 @@ public class GridDhtAtomicCache<K, V> extends GridDhtCacheAdapter<K, V> {
     /** {@inheritDoc} */
     @SuppressWarnings("unchecked")
     @Override public IgniteInternalFuture<V> getAndPutAsync0(K key, V val, @Nullable CacheEntryPredicate... filter) {
-        A.notNull(key, "key", val, "val");
+        A.notNull(key, "key");
 
-        return updateAllAsync0(F.asMap(key, val),
+        return updateAllAsync0(F0.asMap(key, val),
             null,
             null,
             null,
@@ -426,9 +428,9 @@ public class GridDhtAtomicCache<K, V> extends GridDhtCacheAdapter<K, V> {
     /** {@inheritDoc} */
     @SuppressWarnings("unchecked")
     @Override public IgniteInternalFuture<Boolean> putAsync0(K key, V val, @Nullable CacheEntryPredicate... filter) {
-        A.notNull(key, "key", val, "val");
+        A.notNull(key, "key");
 
-        return updateAllAsync0(F.asMap(key, val),
+        return updateAllAsync0(F0.asMap(key, val),
             null,
             null,
             null,
@@ -443,7 +445,7 @@ public class GridDhtAtomicCache<K, V> extends GridDhtCacheAdapter<K, V> {
     @Override public V tryPutIfAbsent(K key, V val) throws IgniteCheckedException {
         A.notNull(key, "key", val, "val");
 
-        return (V)updateAllAsync0(F.asMap(key, val),
+        return (V)updateAllAsync0(F0.asMap(key, val),
             null,
             null,
             null,
@@ -793,13 +795,18 @@ public class GridDhtAtomicCache<K, V> extends GridDhtCacheAdapter<K, V> {
     /** {@inheritDoc} */
     @SuppressWarnings("unchecked")
     @Override public <T> IgniteInternalFuture<Map<K, EntryProcessorResult<T>>> invokeAllAsync(Set<? extends K> keys,
-        EntryProcessor<K, V, T> entryProcessor, Object... args) {
+        final EntryProcessor<K, V, T> entryProcessor,
+        Object... args) {
         A.notNull(keys, "keys", entryProcessor, "entryProcessor");
 
         if (keyCheck)
             validateCacheKeys(keys);
 
-        Map<? extends K, EntryProcessor<K, V, Object>> invokeMap = CU.invokeMap(keys, entryProcessor);
+        Map<? extends K, EntryProcessor> invokeMap = F.viewAsMap(keys, new C1<K, EntryProcessor>() {
+            @Override public EntryProcessor apply(K k) {
+                return entryProcessor;
+            }
+        });
 
         CacheOperationContext opCtx = ctx.operationContextPerCall();
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtForceKeysFuture.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtForceKeysFuture.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtForceKeysFuture.java
index 6b03131..7970a44 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtForceKeysFuture.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/dht/preloader/GridDhtForceKeysFuture.java
@@ -43,6 +43,7 @@ import org.apache.ignite.internal.processors.cache.KeyCacheObject;
 import org.apache.ignite.internal.processors.cache.distributed.dht.GridDhtFuture;
 import org.apache.ignite.internal.processors.cache.distributed.dht.GridDhtLocalPartition;
 import org.apache.ignite.internal.processors.cache.distributed.dht.GridDhtPartitionTopology;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridLeanSet;
 import org.apache.ignite.internal.util.future.GridCompoundFuture;
 import org.apache.ignite.internal.util.future.GridFutureAdapter;
@@ -520,11 +521,8 @@ public final class GridDhtForceKeysFuture<K, V> extends GridCompoundFuture<Objec
             if (!cctx.rebalanceEnabled()) {
                 Collection<KeyCacheObject> retryKeys = F.view(
                     keys,
-                    F.and(
-                        F.notIn(missedKeys),
-                        F.notIn(F.viewReadOnly(res.forcedInfos(), CU.<KeyCacheObject, V>info2Key()))
-                    )
-                );
+                    F0.notIn(missedKeys),
+                    F0.notIn(F.viewReadOnly(res.forcedInfos(), CU.<KeyCacheObject, V>info2Key())));
 
                 if (!retryKeys.isEmpty())
                     map(retryKeys, F.concat(false, node, exc));

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearCacheAdapter.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearCacheAdapter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearCacheAdapter.java
index 5c48dc7..5bf18d9 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearCacheAdapter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/distributed/near/GridNearCacheAdapter.java
@@ -64,7 +64,6 @@ import org.apache.ignite.internal.util.typedef.C1;
 import org.apache.ignite.internal.util.typedef.F;
 import org.apache.ignite.internal.util.typedef.P1;
 import org.apache.ignite.internal.util.typedef.internal.A;
-import org.apache.ignite.internal.util.typedef.internal.CU;
 import org.apache.ignite.internal.util.typedef.internal.S;
 import org.apache.ignite.lang.IgniteBiPredicate;
 import org.jetbrains.annotations.NotNull;
@@ -417,7 +416,7 @@ public abstract class GridNearCacheAdapter<K, V> extends GridDistributedCacheAda
 
     /** {@inheritDoc} */
     @Override public Collection<V> values(CacheEntryPredicate... filter) {
-        return new GridCacheValueCollection<>(ctx, entrySet(filter), ctx.vararg(CU.<K, V>cacheHasPeekValue()));
+        return new GridCacheValueCollection<>(ctx, entrySet(filter), ctx.vararg(F.<K, V>cacheHasPeekValue()));
     }
 
     /** {@inheritDoc} */
@@ -559,12 +558,12 @@ public abstract class GridNearCacheAdapter<K, V> extends GridDistributedCacheAda
         /** {@inheritDoc} */
         @NotNull @Override public Iterator<Cache.Entry<K, V>> iterator() {
             return new EntryIterator(nearSet.iterator(),
-                F.identityIterator(dhtSet, new P1<Cache.Entry<K, V>>() {
-                    @Override
-                    public boolean apply(Cache.Entry<K, V> e) {
+                F.iterator0(dhtSet, false, new P1<Cache.Entry<K, V>>() {
+                    @Override public boolean apply(Cache.Entry<K, V> e) {
                         try {
                             return GridNearCacheAdapter.super.localPeek(e.getKey(), NEAR_PEEK_MODE, null) == null;
-                        } catch (IgniteCheckedException ex) {
+                        }
+                        catch (IgniteCheckedException ex) {
                             throw new IgniteException(ex);
                         }
                     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/local/atomic/GridLocalAtomicCache.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/local/atomic/GridLocalAtomicCache.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/local/atomic/GridLocalAtomicCache.java
index 3b60f96..6130ead 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/local/atomic/GridLocalAtomicCache.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/local/atomic/GridLocalAtomicCache.java
@@ -60,6 +60,7 @@ import org.apache.ignite.internal.processors.cache.KeyCacheObject;
 import org.apache.ignite.internal.processors.cache.local.GridLocalCacheEntry;
 import org.apache.ignite.internal.processors.cache.transactions.IgniteTxLocalEx;
 import org.apache.ignite.internal.processors.cache.version.GridCacheVersion;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridUnsafe;
 import org.apache.ignite.internal.util.future.GridEmbeddedFuture;
 import org.apache.ignite.internal.util.future.GridFinishedFuture;
@@ -188,7 +189,7 @@ public class GridLocalAtomicCache<K, V> extends GridCacheAdapter<K, V> {
     @Override public IgniteInternalFuture<V> getAndPutAsync0(K key, V val, @Nullable CacheEntryPredicate... filter) {
         A.notNull(key, "key", val, "val");
 
-        return updateAllAsync0(F.asMap(key, val),
+        return updateAllAsync0(F0.asMap(key, val),
             null,
             null,
             true,
@@ -201,7 +202,7 @@ public class GridLocalAtomicCache<K, V> extends GridCacheAdapter<K, V> {
     @Override public IgniteInternalFuture<Boolean> putAsync0(K key, V val, @Nullable CacheEntryPredicate... filter) {
         A.notNull(key, "key", val, "val");
 
-        return updateAllAsync0(F.asMap(key, val),
+        return updateAllAsync0(F0.asMap(key, val),
             null,
             null,
             false,
@@ -658,7 +659,11 @@ public class GridLocalAtomicCache<K, V> extends GridCacheAdapter<K, V> {
         if (keyCheck)
             validateCacheKeys(keys);
 
-        Map<? extends K, EntryProcessor<K, V, Object>> invokeMap = CU.invokeMap(keys, entryProcessor);
+        Map<? extends K, EntryProcessor> invokeMap = F.viewAsMap(keys, new C1<K, EntryProcessor>() {
+            @Override public EntryProcessor apply(K k) {
+                return entryProcessor;
+            }
+        });
 
         CacheOperationContext opCtx = ctx.operationContextPerCall();
 
@@ -724,7 +729,11 @@ public class GridLocalAtomicCache<K, V> extends GridCacheAdapter<K, V> {
         if (keyCheck)
             validateCacheKeys(keys);
 
-        Map<? extends K, EntryProcessor<K, V, Object>> invokeMap = CU.invokeMap(keys, entryProcessor);
+        Map<? extends K, EntryProcessor> invokeMap = F.viewAsMap(keys, new C1<K, EntryProcessor>() {
+            @Override public EntryProcessor apply(K k) {
+                return entryProcessor;
+            }
+        });
 
         return updateAllAsync0(null,
             invokeMap,

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/GridCacheAtomicStampedImpl.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/GridCacheAtomicStampedImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/GridCacheAtomicStampedImpl.java
index 84c4269..f7a82a9 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/GridCacheAtomicStampedImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/datastructures/GridCacheAtomicStampedImpl.java
@@ -30,6 +30,7 @@ import org.apache.ignite.internal.GridKernalContext;
 import org.apache.ignite.internal.processors.cache.GridCacheContext;
 import org.apache.ignite.internal.processors.cache.IgniteInternalCache;
 import org.apache.ignite.internal.processors.cache.transactions.IgniteInternalTx;
+import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.tostring.GridToStringBuilder;
 import org.apache.ignite.internal.util.typedef.F;
 import org.apache.ignite.internal.util.typedef.internal.CU;
@@ -178,8 +179,8 @@ public final class GridCacheAtomicStampedImpl<T, S> implements GridCacheAtomicSt
         checkRemoved();
 
         try {
-            return CU.outTx(internalCompareAndSet(F.equalTo(expVal), wrapperClosure(newVal),
-                F.equalTo(expStamp), wrapperClosure(newStamp)), ctx);
+            return CU.outTx(internalCompareAndSet(F0.equalTo(expVal), wrapperClosure(newVal),
+                F0.equalTo(expStamp), wrapperClosure(newStamp)), ctx);
         }
         catch (IgniteCheckedException e) {
             throw U.convertException(e);

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsProcessor.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsProcessor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsProcessor.java
index b313084..5b8cf86 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsProcessor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/igfs/IgfsProcessor.java
@@ -45,6 +45,7 @@ import org.apache.ignite.internal.IgniteNodeAttributes;
 import org.apache.ignite.internal.processors.query.GridQueryProcessor;
 import org.apache.ignite.internal.util.ipc.IpcServerEndpoint;
 import org.apache.ignite.internal.util.typedef.C1;
+import org.apache.ignite.internal.util.typedef.CI1;
 import org.apache.ignite.internal.util.typedef.F;
 import org.apache.ignite.internal.util.typedef.X;
 import org.apache.ignite.internal.util.typedef.internal.U;
@@ -127,8 +128,11 @@ public class IgfsProcessor extends IgfsProcessorAdapter {
 
         final Map<String, CacheConfiguration> cacheCfgs = new HashMap<>();
 
-        for (CacheConfiguration c : gridCfg.getCacheConfiguration())
-            cacheCfgs.put(c.getName(), c);
+        F.forEach(gridCfg.getCacheConfiguration(), new CI1<CacheConfiguration>() {
+            @Override public void apply(CacheConfiguration c) {
+                cacheCfgs.put(c.getName(), c);
+            }
+        });
 
         Collection<IgfsAttributes> attrVals = new ArrayList<>();
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/dotnet/PlatformDotNetCacheStore.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/dotnet/PlatformDotNetCacheStore.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/dotnet/PlatformDotNetCacheStore.java
index 9f0fd3f..7e65c22 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/dotnet/PlatformDotNetCacheStore.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/platform/dotnet/PlatformDotNetCacheStore.java
@@ -235,13 +235,13 @@ public class PlatformDotNetCacheStore<K, V> implements CacheStore<K, V>, Platfor
                         @Override public Set<Entry<K, V>> entrySet() {
                             return new AbstractSet<Entry<K, V>>() {
                                 @Override public Iterator<Entry<K, V>> iterator() {
-                                    return F.iteratorReadOnly(entries, new C1<Cache.Entry<? extends K, ? extends V>, Entry<K, V>>() {
+                                    return F.iterator(entries, new C1<Cache.Entry<? extends K, ? extends V>, Entry<K, V>>() {
                                         private static final long serialVersionUID = 0L;
 
                                         @Override public Entry<K, V> apply(Cache.Entry<? extends K, ? extends V> entry) {
                                             return new GridMapEntry<>(entry.getKey(), entry.getValue());
                                         }
-                                    });
+                                    }, true);
                                 }
 
                                 @Override public int size() {

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/top/GridTopologyCommandHandler.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/top/GridTopologyCommandHandler.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/top/GridTopologyCommandHandler.java
index 5e12199..297785e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/top/GridTopologyCommandHandler.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/top/GridTopologyCommandHandler.java
@@ -135,7 +135,8 @@ public class GridTopologyCommandHandler extends GridRestCommandHandlerAdapter {
                 }
                 else
                     node = F.find(ctx.discovery().allNodes(), null, new P1<ClusterNode>() {
-                        @Override public boolean apply(ClusterNode n) {
+                        @Override
+                        public boolean apply(ClusterNode n) {
                             return containsIp(n.addresses(), ip);
                         }
                     });

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/util/F0.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/F0.java b/modules/core/src/main/java/org/apache/ignite/internal/util/F0.java
index b819226..7e9e448 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/F0.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/F0.java
@@ -17,6 +17,8 @@
 
 package org.apache.ignite.internal.util;
 
+import java.util.Collection;
+import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
 import org.apache.ignite.IgniteCheckedException;
@@ -25,9 +27,11 @@ import org.apache.ignite.internal.processors.cache.CacheEntryPredicateAdapter;
 import org.apache.ignite.internal.processors.cache.CacheEntrySerializablePredicate;
 import org.apache.ignite.internal.processors.cache.GridCacheContext;
 import org.apache.ignite.internal.processors.cache.GridCacheEntryEx;
+import org.apache.ignite.internal.util.lang.GridFunc;
 import org.apache.ignite.internal.util.lang.GridNodePredicate;
 import org.apache.ignite.internal.util.typedef.F;
 import org.apache.ignite.internal.util.typedef.P1;
+import org.apache.ignite.internal.util.typedef.internal.A;
 import org.apache.ignite.internal.util.typedef.internal.CU;
 import org.apache.ignite.lang.IgnitePredicate;
 import org.jetbrains.annotations.Nullable;
@@ -38,6 +42,79 @@ import org.jetbrains.annotations.Nullable;
  */
 public class F0 {
     /**
+     * Negates given predicates.
+     * <p>
+     * Gets predicate (not peer-deployable) that evaluates to {@code true} if any of given predicates
+     * evaluates to {@code false}. If all predicates evaluate to {@code true} the
+     * result predicate will evaluate to {@code false}.
+     *
+     * @param p Predicate to negate.
+     * @param <T> Type of the free variable, i.e. the element the predicate is called on.
+     * @return Negated predicate (not peer-deployable).
+     */
+    public static <T> IgnitePredicate<T> not(@Nullable final IgnitePredicate<? super T>... p) {
+        return F.isAlwaysFalse(p) ? F.<T>alwaysTrue() : F.isAlwaysTrue(p) ? F.<T>alwaysFalse() : new P1<T>() {
+            @Override public boolean apply(T t) {
+                return !F.isAll(t, p);
+            }
+        };
+    }
+
+    /**
+     * Gets predicate (not peer-deployable) that evaluates to {@code true} if its free variable is not equal
+     * to {@code target} or both are {@code null}.
+     *
+     * @param target Object to compare free variable to.
+     * @param <T> Type of the free variable, i.e. the element the predicate is called on.
+     * @return Predicate (not peer-deployable) that evaluates to {@code true} if its free variable is not equal
+     *      to {@code target} or both are {@code null}.
+     */
+    public static <T> IgnitePredicate<T> notEqualTo(@Nullable final T target) {
+        return new P1<T>() {
+            @Override public boolean apply(T t) {
+                return !F.eq(t, target);
+            }
+        };
+    }
+
+    /**
+     * Gets predicate (not peer-deployable) that returns {@code true} if its free variable
+     * is not contained in given collection.
+     *
+     * @param c Collection to check for containment.
+     * @param <T> Type of the free variable for the predicate and type of the
+     *      collection elements.
+     * @return Predicate (not peer-deployable) that returns {@code true} if its free variable is not
+     *      contained in given collection.
+     */
+    public static <T> IgnitePredicate<T> notIn(@Nullable final Collection<? extends T> c) {
+        return F.isEmpty(c) ? GridFunc.<T>alwaysTrue() : new P1<T>() {
+            @Override public boolean apply(T t) {
+                assert c != null;
+
+                return !c.contains(t);
+            }
+        };
+    }
+
+    /**
+     * Gets predicate (not perr-deployable) that evaluates to {@code true} if its free variable is equal
+     * to {@code target} or both are {@code null}.
+     *
+     * @param target Object to compare free variable to.
+     * @param <T> Type of the free variable, i.e. the element the predicate is called on.
+     * @return Predicate that evaluates to {@code true} if its free variable is equal to
+     *      {@code target} or both are {@code null}.
+     */
+    public static <T> IgnitePredicate<T> equalTo(@Nullable final T target) {
+        return new P1<T>() {
+            @Override public boolean apply(T t) {
+                return F.eq(t, target);
+            }
+        };
+    }
+
+    /**
      * @param p1 Filter1.
      * @param p2 Filter2.
      * @return And filter.
@@ -56,12 +133,16 @@ public class F0 {
         if (e1 && e2)
             return CU.alwaysTrue0();
 
-        if (e1) {
+        if (e1 && !e2) {
+            assert p2 != null;
+
             if (p2.length == 1)
                 return p2[0];
         }
 
-        if (e2) {
+        if (!e1 && e2) {
+            assert p1 != null;
+
             if (p1.length == 1)
                 return p1[0];
         }
@@ -69,12 +150,16 @@ public class F0 {
         return new CacheEntrySerializablePredicate(new CacheEntryPredicateAdapter() {
             @Override public boolean apply(GridCacheEntryEx e) {
                 if (!e1) {
+                    assert p1 != null;
+
                     for (CacheEntryPredicate p : p1)
                         if (p != null && !p.apply(e))
                             return false;
                 }
 
                 if (!e2) {
+                    assert p2 != null;
+
                     for (CacheEntryPredicate p : p2)
                         if (p != null && !p.apply(e))
                             return false;
@@ -101,11 +186,15 @@ public class F0 {
 
             @Override public void prepareMarshal(GridCacheContext ctx) throws IgniteCheckedException {
                 if (!e1) {
+                    assert p1 != null;
+
                     for (CacheEntryPredicate p : p1)
                         p.prepareMarshal(ctx);
                 }
 
                 if (!e2) {
+                    assert p2 != null;
+
                     for (CacheEntryPredicate p : p2)
                         p.prepareMarshal(ctx);
                 }
@@ -114,6 +203,63 @@ public class F0 {
     }
 
     /**
+     * @param p Filter1.
+     * @param ps Filter2.
+     * @return And filter.
+     */
+    public static CacheEntryPredicate and0(
+        @Nullable final CacheEntryPredicate p,
+        @Nullable final CacheEntryPredicate... ps) {
+        if (p == null && F.isEmptyOrNulls(ps))
+            return CU.alwaysTrue0();
+
+        if (F.isAlwaysFalse(p) && F.isAlwaysFalse(ps))
+            return CU.alwaysFalse0();
+
+        if (F.isAlwaysTrue(p) && F.isAlwaysTrue(ps))
+            return CU.alwaysTrue0();
+
+        return new CacheEntrySerializablePredicate(new CacheEntryPredicateAdapter() {
+            @Override public boolean apply(GridCacheEntryEx e) {
+                assert ps != null;
+
+                if (p != null && !p.apply(e))
+                    return false;
+
+                for (CacheEntryPredicate p : ps) {
+                    if (p != null && !p.apply(e))
+                        return false;
+                }
+
+                return true;
+            }
+
+            @Override public void entryLocked(boolean locked) {
+                assert ps != null;
+
+                if (p != null)
+                    p.entryLocked(locked);
+
+                for (CacheEntryPredicate p : ps) {
+                    if (p != null)
+                        p.entryLocked(locked);
+                }
+            }
+
+            @Override public void prepareMarshal(GridCacheContext ctx) throws IgniteCheckedException {
+                assert ps != null;
+
+                if (p != null)
+                    p.prepareMarshal(ctx);
+
+                for (CacheEntryPredicate p : ps)
+                    if (p != null)
+                        p.prepareMarshal(ctx);
+            }
+        });
+    }
+
+    /**
      * Get a predicate (non peer-deployable) that evaluates to {@code true} if each of its component predicates
      * evaluates to {@code true}. The components are evaluated in order they are supplied.
      * Evaluation will be stopped as soon as first predicate evaluates to {@code false}.
@@ -141,12 +287,16 @@ public class F0 {
         if (e1 && e2)
             return F.alwaysTrue();
 
-        if (e1) {
+        if (e1 && !e2) {
+            assert p2 != null;
+
             if (p2.length == 1)
                 return (IgnitePredicate<T>)p2[0];
         }
 
-        if (e2) {
+        if (!e1 && e2) {
+            assert p1 != null;
+
             if (p1.length == 1)
                 return (IgnitePredicate<T>)p1[0];
         }
@@ -155,11 +305,15 @@ public class F0 {
             Set<UUID> ids = new GridLeanSet<>();
 
             if (!e1) {
+                assert p1 != null;
+
                 for (IgnitePredicate<? super T> p : p1)
                     ids.addAll(((GridNodePredicate)p).nodeIds());
             }
 
             if (!e2) {
+                assert p2 != null;
+
                 for (IgnitePredicate<? super T> p : p2)
                     ids.addAll(((GridNodePredicate)p).nodeIds());
             }
@@ -171,12 +325,16 @@ public class F0 {
             return new P1<T>() {
                 @Override public boolean apply(T t) {
                     if (!e1) {
+                        assert p1 != null;
+
                         for (IgnitePredicate<? super T> p : p1)
                             if (p != null && !p.apply(t))
                                 return false;
                     }
 
                     if (!e2) {
+                        assert p2 != null;
+
                         for (IgnitePredicate<? super T> p : p2)
                             if (p != null && !p.apply(t))
                                 return false;
@@ -189,6 +347,148 @@ public class F0 {
     }
 
     /**
+     * Get a predicate (not peer-deployable) that evaluates to {@code true} if each of its component predicates
+     * evaluates to {@code true}. The components are evaluated in order they are supplied.
+     * Evaluation will be stopped as soon as first predicate evaluates to {@code false}.
+     * Passed in predicates are NOT copied. If no predicates are passed in the returned
+     * predicate will always evaluate to {@code false}.
+     *
+     * @param ps Passed in predicate. If none provided - always-{@code false} predicate is
+     *      returned.
+     * @param <T> Type of the free variable, i.e. the element the predicate is called on.
+     * @return Predicate that evaluates to {@code true} if each of its component predicates
+     *      evaluates to {@code true}.
+     */
+    @SuppressWarnings("unchecked")
+    public static <T> IgnitePredicate<T> and(
+        @Nullable final IgnitePredicate<? super T> p,
+        @Nullable final IgnitePredicate<? super T>... ps
+    ) {
+        if (p == null && F.isEmptyOrNulls(ps))
+            return F.alwaysTrue();
+
+        if (F.isAlwaysFalse(p) && F.isAlwaysFalse(ps))
+            return F.alwaysFalse();
+
+        if (F.isAlwaysTrue(p) && F.isAlwaysTrue(ps))
+            return F.alwaysTrue();
+
+        if (isAllNodePredicates(p) && isAllNodePredicates(ps)) {
+            assert ps != null;
+
+            Set<UUID> ids = new GridLeanSet<>();
+
+            for (IgnitePredicate<? super T> p0 : ps) {
+                Collection<UUID> list = ((GridNodePredicate)p0).nodeIds();
+
+                if (ids.isEmpty())
+                    ids.addAll(list);
+                else
+                    ids.retainAll(list);
+            }
+
+            Collection<UUID> list = ((GridNodePredicate)p).nodeIds();
+
+            if (ids.isEmpty())
+                ids.addAll(list);
+            else
+                ids.retainAll(list);
+
+            // T must be <T extends GridNode>.
+            return (IgnitePredicate<T>)new GridNodePredicate(ids);
+        }
+        else {
+            return new P1<T>() {
+                @Override public boolean apply(T t) {
+                    assert ps != null;
+
+                    if (p != null && !p.apply(t))
+                        return false;
+
+                    for (IgnitePredicate<? super T> p : ps)
+                        if (p != null && !p.apply(t))
+                            return false;
+
+                    return true;
+                }
+            };
+        }
+    }
+
+    /**
+     * Gets predicate (not peer-deployable) that returns {@code true} if its free variable is contained
+     * in given collection.
+     *
+     * @param c Collection to check for containment.
+     * @param <T> Type of the free variable for the predicate and type of the
+     *      collection elements.
+     * @return Predicate (not peer-deployable) that returns {@code true} if its free variable is
+     *      contained in given collection.
+     */
+    public static <T> IgnitePredicate<T> in(@Nullable final Collection<? extends T> c) {
+        return F.isEmpty(c) ? GridFunc.<T>alwaysFalse() : new P1<T>() {
+            @Override public boolean apply(T t) {
+                assert c != null;
+
+                return c.contains(t);
+            }
+        };
+    }
+
+    /**
+     * Provides predicate (not peer-deployable) which returns {@code true} if it receives an element
+     * that is contained in the passed in collection.
+     *
+     * @param c Collection used for predicate filter.
+     * @param <T> Element type.
+     * @return Predicate which returns {@code true} if it receives an element
+     *  that is contained in the passed in collection.
+     */
+    public static <T> IgnitePredicate<T> contains(@Nullable final Collection<T> c) {
+        return c == null || c.isEmpty() ? GridFunc.<T>alwaysFalse() : new P1<T>() {
+            @Override public boolean apply(T t) {
+                return c.contains(t);
+            }
+        };
+    }
+
+    /**
+     * Provides predicate (not peer-deployable) which returns {@code true} if it receives an element
+     * that is not contained in the passed in collection.
+     *
+     * @param c Collection used for predicate filter.
+     * @param <T> Element type.
+     * @return Predicate which returns {@code true} if it receives an element
+     *  that is not contained in the passed in collection.
+     */
+    public static <T> IgnitePredicate<T> notContains(@Nullable final Collection<T> c) {
+        return c == null || c.isEmpty() ? GridFunc.<T>alwaysTrue() : new P1<T>() {
+            @Override public boolean apply(T t) {
+                return !c.contains(t);
+            }
+        };
+    }
+
+    /**
+     * Tests if all passed in predicates are instances of {@link GridNodePredicate} class.
+     *
+     * @param ps Collection of predicates to test.
+     * @return {@code True} if all passed in predicates are instances of {@link GridNodePredicate} class.
+     */
+    public static boolean isAllNodePredicates(@Nullable Iterable<? extends IgnitePredicate<?>> ps) {
+        if (F.isEmpty(ps))
+            return false;
+
+        assert ps != null;
+
+        for (IgnitePredicate<?> p : ps)
+            if (!(p instanceof GridNodePredicate))
+                return false;
+
+        return true;
+    }
+
+    /**
      * Tests if all passed in predicates are instances of {@link GridNodePredicate} class.
      *
      * @param ps Collection of predicates to test.
@@ -198,10 +498,27 @@ public class F0 {
         if (F.isEmpty(ps))
             return false;
 
+        assert ps != null;
+
         for (IgnitePredicate<?> p : ps)
             if (!(p instanceof GridNodePredicate))
                 return false;
 
         return true;
     }
+
+    /**
+     * Creates map with given values, adding a strict not-null check for value.
+     *
+     * @param key Key.
+     * @param val Value.
+     * @param <K> Key's type.
+     * @param <V> Value's type.
+     * @return Created map.
+     */
+    public static <K, V> Map<K, V> asMap(K key, V val) {
+        A.notNull(val, "val");
+
+        return F.asMap(key, val);
+    }
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/util/GridExecutionStatistics.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/GridExecutionStatistics.java b/modules/core/src/main/java/org/apache/ignite/internal/util/GridExecutionStatistics.java
index fc2e3a2..a23fe28 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/GridExecutionStatistics.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/GridExecutionStatistics.java
@@ -71,13 +71,13 @@ public class GridExecutionStatistics {
 
         long time = startTime.get().get2();
 
-        AtomicInteger cnt = F.addIfAbsent(cntMap, name, new AtomicInteger());
+        AtomicInteger cnt = F.addIfAbsent(cntMap, name, F.newAtomicInt());
 
         assert cnt != null;
 
         cnt.incrementAndGet();
 
-        AtomicLong d = F.addIfAbsent(durationMap, name, new AtomicLong());
+        AtomicLong d = F.addIfAbsent(durationMap, name, F.newAtomicLong());
 
         assert d != null;
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java
index a92ccab..480859d 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java
@@ -8508,7 +8508,7 @@ public abstract class IgniteUtils {
             throw new IgniteCheckedException("Addresses can not be resolved [addr=" + addrs +
                 ", hostNames=" + hostNames + ']');
 
-        return Collections.unmodifiableList(res);
+        return F.viewListReadOnly(res, F.<InetAddress>identity());
     }
 
     /**
@@ -8555,7 +8555,7 @@ public abstract class IgniteUtils {
             res.add(new InetSocketAddress(addr, port));
         }
 
-        return Collections.unmodifiableList(res);
+        return F.viewListReadOnly(res, F.<InetSocketAddress>identity());
     }
 
     /**


[2/3] ignite git commit: Revert "IGNITE-2330: Simplified GridFunc."

Posted by vo...@apache.org.
http://git-wip-us.apache.org/repos/asf/ignite/blob/ddbe2d59/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridFunc.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridFunc.java b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridFunc.java
index 015be5c..0678657 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridFunc.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/lang/GridFunc.java
@@ -35,10 +35,16 @@ import java.util.Set;
 import java.util.UUID;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicLong;
+import java.util.concurrent.atomic.AtomicReference;
+import javax.cache.Cache;
+import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.cluster.ClusterNode;
 import org.apache.ignite.compute.ComputeJobResult;
+import org.apache.ignite.internal.IgniteFutureTimeoutCheckedException;
+import org.apache.ignite.internal.IgniteInternalFuture;
 import org.apache.ignite.internal.util.F0;
 import org.apache.ignite.internal.util.GridConcurrentHashSet;
 import org.apache.ignite.internal.util.GridEmptyIterator;
@@ -46,6 +52,7 @@ import org.apache.ignite.internal.util.GridLeanMap;
 import org.apache.ignite.internal.util.GridLeanSet;
 import org.apache.ignite.internal.util.GridSerializableCollection;
 import org.apache.ignite.internal.util.GridSerializableIterator;
+import org.apache.ignite.internal.util.GridSerializableList;
 import org.apache.ignite.internal.util.GridSerializableMap;
 import org.apache.ignite.internal.util.GridSerializableSet;
 import org.apache.ignite.internal.util.typedef.C1;
@@ -61,6 +68,7 @@ import org.apache.ignite.lang.IgniteBiTuple;
 import org.apache.ignite.lang.IgniteCallable;
 import org.apache.ignite.lang.IgniteClosure;
 import org.apache.ignite.lang.IgniteInClosure;
+import org.apache.ignite.lang.IgniteOutClosure;
 import org.apache.ignite.lang.IgnitePredicate;
 import org.apache.ignite.lang.IgniteReducer;
 import org.jetbrains.annotations.NotNull;
@@ -144,6 +152,13 @@ public class GridFunc {
     };
 
     /** */
+    public static final IgnitePredicate<Object> IS_NULL = new P1<Object>() {
+        @Override public boolean apply(Object o) {
+            return o == null;
+        }
+    };
+
+    /** */
     public static final IgnitePredicate<Object> IS_NOT_NULL = new P1<Object>() {
         @Override public boolean apply(Object o) {
             return o != null;
@@ -151,6 +166,28 @@ public class GridFunc {
     };
 
     /** */
+    private static final IgniteCallable<?> LIST_FACTORY = new IgniteCallable<List>() {
+        @Override public List call() {
+            return new ArrayList();
+        }
+
+        @Override public String toString() {
+            return "Array list factory.";
+        }
+    };
+
+    /** */
+    private static final IgniteCallable<?> LINKED_LIST_FACTORY = new IgniteCallable<LinkedList>() {
+        @Override public LinkedList call() {
+            return new LinkedList();
+        }
+
+        @Override public String toString() {
+            return "Linked list factory.";
+        }
+    };
+
+    /** */
     private static final IgniteCallable<?> SET_FACTORY = new IgniteCallable<Set>() {
         @Override public Set call() {
             return new HashSet();
@@ -162,6 +199,61 @@ public class GridFunc {
     };
 
     /** */
+    private static final IgniteCallable<AtomicInteger> ATOMIC_INT_FACTORY = new IgniteCallable<AtomicInteger>() {
+        @Override public AtomicInteger call() {
+            return new AtomicInteger(0);
+        }
+
+        @Override public String toString() {
+            return "Atomic integer factory.";
+        }
+    };
+
+    /** */
+    private static final IgniteCallable<AtomicLong> ATOMIC_LONG_FACTORY = new IgniteCallable<AtomicLong>() {
+        @Override public AtomicLong call() {
+            return new AtomicLong(0);
+        }
+
+        @Override public String toString() {
+            return "Atomic long factory.";
+        }
+    };
+
+    /** */
+    private static final IgniteCallable<AtomicBoolean> ATOMIC_BOOL_FACTORY = new IgniteCallable<AtomicBoolean>() {
+        @Override public AtomicBoolean call() {
+            return new AtomicBoolean();
+        }
+
+        @Override public String toString() {
+            return "Atomic boolean factory.";
+        }
+    };
+
+    /** */
+    private static final IgniteCallable<?> ATOMIC_REF_FACTORY = new IgniteCallable<AtomicReference>() {
+        @Override public AtomicReference call() {
+            return new AtomicReference();
+        }
+
+        @Override public String toString() {
+            return "Atomic reference factory.";
+        }
+    };
+
+    /** */
+    private static final IgniteCallable<?> MAP_FACTORY = new IgniteCallable<Map>() {
+        @Override public Map call() {
+            return new HashMap();
+        }
+
+        @Override public String toString() {
+            return "Hash map factory.";
+        }
+    };
+
+    /** */
     private static final IgniteCallable<?> CONCURRENT_MAP_FACTORY = new IgniteCallable<ConcurrentMap>() {
         @Override public ConcurrentMap call() {
             return new ConcurrentHashMap8();
@@ -184,6 +276,42 @@ public class GridFunc {
     };
 
     /** */
+    private static final IgniteClosure CACHE_ENTRY_KEY = new IgniteClosure() {
+        @Override public Object apply(Object o) {
+            return ((Cache.Entry)o).getKey();
+        }
+
+        @Override public String toString() {
+            return "Map entry to key transformer closure.";
+        }
+    };
+
+
+    /** */
+    private static final IgniteClosure CACHE_ENTRY_VAL_GET = new IgniteClosure() {
+        @SuppressWarnings({"unchecked"})
+        @Nullable @Override public Object apply(Object o) {
+            return ((Cache.Entry)o).getValue();
+        }
+
+        @Override public String toString() {
+            return "Cache entry to get-value transformer closure.";
+        }
+    };
+
+    /** */
+    private static final IgnitePredicate CACHE_ENTRY_HAS_PEEK_VAL = new IgnitePredicate() {
+        @SuppressWarnings({"unchecked"})
+        @Override public boolean apply(Object o) {
+            return ((Cache.Entry)o).getValue() != null;
+        }
+
+        @Override public String toString() {
+            return "Cache entry has-peek-value predicate.";
+        }
+    };
+
+    /** */
     private static final IgniteClosure<ClusterNode, UUID> NODE2ID = new IgniteClosure<ClusterNode, UUID>() {
         @Override public UUID apply(ClusterNode n) {
             return n.id();
@@ -216,8 +344,12 @@ public class GridFunc {
         }
     };
 
-    /** Empty iterator. */
-    private static final GridEmptyIterator EMPTY_ITER = new GridEmptyIterator();
+    /** */
+    private static final IgnitePredicate<IgniteInternalFuture<?>> UNFINISHED_FUTURE = new IgnitePredicate<IgniteInternalFuture<?>>() {
+        @Override public boolean apply(IgniteInternalFuture<?> f) {
+            return !f.isDone();
+        }
+    };
 
     /**
      * Gets predicate that evaluates to {@code true} only for given local node ID.
@@ -250,6 +382,23 @@ public class GridFunc {
     }
 
     /**
+     * Creates new collection by removing duplicates from the given collection.
+     *
+     * @param c Collection to remove duplicates from.
+     * @param <T> Type of the collection.
+     * @return De-duped collection.
+     */
+    public static <T> Collection<T> dedup(Collection<? extends T> c) {
+        A.notNull(c, "c");
+
+        Collection<T> set = new GridLeanSet<>();
+
+        set.addAll(c);
+
+        return set;
+    }
+
+    /**
      * Calculates sum of all elements.
      * <p>
      * <img src="{@docRoot}/img/sum.png">
@@ -429,6 +578,8 @@ public class GridFunc {
         if (isEmpty(res))
             return Collections.emptyList();
 
+        assert res != null;
+
         Collection<T> c = new ArrayList<>(res.size());
 
         for (ComputeJobResult r : res)
@@ -542,6 +693,20 @@ public class GridFunc {
     }
 
     /**
+     * Gets random value from given array. This operation
+     * does not iterate through array elements and returns immediately.
+     *
+     * @param c Input collection.
+     * @param <T> Type of the collection.
+     * @return Random value from the input collection.
+     */
+    public static <T> T rand(T... c) {
+        A.notNull(c, "c");
+
+        return c[ThreadLocalRandom8.current().nextInt(c.length)];
+    }
+
+    /**
      * Concatenates an element to a collection. If {@code copy} flag is {@code true}, then
      * a new collection will be created and the element and passed in collection will be
      * copied into the new one. The returned collection will be modifiable. If {@code copy}
@@ -564,6 +729,8 @@ public class GridFunc {
                 return l;
             }
 
+            assert c != null;
+
             Collection<T> ret = new ArrayList<>(c.size() + 1);
 
             ret.add(t);
@@ -575,6 +742,8 @@ public class GridFunc {
             if (isEmpty(c))
                 return Collections.singletonList(t);
 
+            assert c != null;
+
             return new GridSerializableCollection<T>() {
                 @NotNull
                 @Override public Iterator<T> iterator() {
@@ -631,11 +800,8 @@ public class GridFunc {
             if (isEmpty(c1) && isEmpty(c2))
                 return new ArrayList<>(0);
 
-            if (isEmpty(c1)) {
-                assert c2 != null;
-
+            if (isEmpty(c1))
                 return new ArrayList<>(c2);
-            }
 
             if (isEmpty(c2))
                 return new ArrayList<>(c1);
@@ -708,7 +874,7 @@ public class GridFunc {
      * @param obj One or more elements.
      * @return Concatenated array.
      */
-    public static <T> T[] concat(@Nullable T[] arr, T[] obj) {
+    public static <T> T[] concat(@Nullable T[] arr, T... obj) {
         T[] newArr;
 
         if (arr == null || arr.length == 0)
@@ -723,15 +889,17 @@ public class GridFunc {
     }
 
     /**
-     * Concatenate two iterators.
+     * Concatenates multiple iterators as single one.
      *
-     * @param iter1 Iterator 1.
-     * @param iter2 Iterator 2.
+     * @param iters Iterators.
      * @return Single iterator.
      */
     @SuppressWarnings("unchecked")
-    public static <T> Iterator<T> concat(Iterator<T> iter1, Iterator<T> iter2) {
-        return concat(asList(iter1, iter2).iterator());
+    public static <T> Iterator<T> concat(Iterator<T> ... iters) {
+        if (iters.length == 1)
+            return iters[0];
+
+        return concat(asList(iters).iterator());
     }
 
     /**
@@ -812,10 +980,11 @@ public class GridFunc {
      * @param <T> Type of collections.
      * @return Collection of remaining elements
      */
-    public static <T0, T extends T0> Collection<T> lose(Collection<T> c, boolean cp, @Nullable Collection<T0> filter) {
+    public static <T0, T extends T0> Collection<T> lose(Collection<T> c, boolean cp,
+        @Nullable Collection<T0> filter) {
         A.notNull(c, "c");
 
-        return lose(c, cp, in(filter));
+        return lose(c, cp, F0.in(filter));
     }
 
     /**
@@ -825,11 +994,11 @@ public class GridFunc {
      * @param c Input collection.
      * @param cp If {@code true} method creates new collection without modifying the input one,
      *      otherwise does <tt>in-place</tt> modifications.
-     * @param p Predicate.
+     * @param p Predicates to filter by. If no predicates provided - no elements are lost.
      * @param <T> Type of collections.
      * @return Collection of remaining elements.
      */
-    public static <T> Collection<T> lose(Collection<T> c, boolean cp, IgnitePredicate<? super T> p) {
+    public static <T> Collection<T> lose(Collection<T> c, boolean cp, @Nullable IgnitePredicate<? super T>... p) {
         A.notNull(c, "c");
 
         Collection<T> res;
@@ -837,18 +1006,19 @@ public class GridFunc {
         if (!cp) {
             res = c;
 
-            if (!isAlwaysFalse(p)) {
-                for (Iterator<T> iter = res.iterator(); iter.hasNext(); )
-                    if (p.apply(iter.next()))
+            if (isEmpty(p))
+                res.clear();
+            else if (!isAlwaysFalse(p))
+                for (Iterator<T> iter = res.iterator(); iter.hasNext();)
+                    if (isAll(iter.next(), p))
                         iter.remove();
-            }
         }
         else {
             res = new LinkedList<>();
 
-            if (!isAlwaysTrue(p))
+            if (!isEmpty(p) && !isAlwaysTrue(p))
                 for (T t : c)
-                    if (!p.apply(t))
+                    if (!isAll(t, p))
                         res.add(t);
         }
 
@@ -856,6 +1026,162 @@ public class GridFunc {
     }
 
     /**
+     * Loses all entries in input map that are evaluated to {@code true} by all given predicates.
+     *
+     * @param m Map to filter.
+     * @param cp If {@code true} method creates new map not modifying input, otherwise does
+     *      <tt>in-place</tt> modifications.
+     * @param p Optional set of predicates to use for filtration. If none provided - original map
+     *  will (or its copy) be returned.
+     * @param <K> Type of the free variable for the predicate and type of map's keys.
+     * @param <V> Type of the free variable for the predicate and type of map's values.
+     * @return Filtered map.
+     */
+    @SuppressWarnings({"unchecked"})
+    public static <K, V> Map<K, V> lose(Map<K, V> m, boolean cp,
+        @Nullable IgnitePredicate<? super Map.Entry<K, V>>... p) {
+        A.notNull(m, "m");
+
+        Map<K, V> res;
+
+        if (!cp) {
+            res = m;
+
+            if (isEmpty(p))
+                res.clear();
+            else if (!isAlwaysFalse(p))
+                for (Iterator<Map.Entry<K, V>> iter = m.entrySet().iterator(); iter.hasNext();)
+                    if (isAll(iter.next(), p))
+                        iter.remove();
+        }
+        else {
+            res = U.newHashMap(m.size());
+
+            if (!isEmpty(p) && !isAlwaysTrue(p))
+                for (Map.Entry<K, V> e : m.entrySet())
+                    if (!F.isAll(e, p))
+                        res.put(e.getKey(), e.getValue());
+        }
+
+        return res;
+    }
+
+    /**
+     * Loses all entries in input map which keys are evaluated to {@code true} by all
+     * given predicates.
+     *
+     * @param m Map to filter.
+     * @param cp If {@code true} method creates new map not modifying input, otherwise does
+     *      <tt>in-place</tt> modifications.
+     * @param p Optional set of predicates to use for filtration. If none provided - original
+     *      map (or its copy) will be returned.
+     * @param <K> Type of the free variable for the predicate and type of map's keys.
+     * @param <V> Type of map's values.
+     * @return Filtered map.
+     */
+    public static <K, V> Map<K, V> loseKeys(
+        Map<K, V> m,
+        boolean cp,
+        @Nullable final IgnitePredicate<? super K>... p
+    ) {
+        return lose(m, cp, new P1<Map.Entry<K, V>>() {
+            @Override public boolean apply(Map.Entry<K, V> e) {
+                return isAll(e.getKey(), p);
+            }
+        });
+    }
+
+    /**
+     * Loses all entries in input map which values are evaluated to {@code true} by all
+     * given predicates.
+     *
+     * @param m Map to filter.
+     * @param cp If {@code true} method creates new map not modifying input, otherwise does
+     *      <tt>in-place</tt> modifications.
+     * @param p Optional set of predicates to use for filtration. If none provided - original
+     *      map (or its copy) will be returned.
+     * @param <K> Type of the free variable for the predicate and type of map's keys.
+     * @param <V> Type of map's values.
+     * @return Filtered map.
+     */
+    public static <K, V> Map<K, V> loseValues(Map<K, V> m, boolean cp,
+        @Nullable final IgnitePredicate<? super V>... p) {
+        return lose(m, cp, new P1<Map.Entry<K, V>>() {
+            @Override public boolean apply(Map.Entry<K, V> e) {
+                return isAll(e.getValue(), p);
+            }
+        });
+    }
+
+    /**
+     * Loses all elements in input list that are contained in {@code filter} collection.
+     *
+     * @param c Input list.
+     * @param cp If {@code true} method creates new list not modifying input,
+     *      otherwise does <tt>in-place</tt> modifications.
+     * @param filter Filter collection. If {@code filter} collection is empty or
+     *      {@code null} - no elements are lost.
+     * @param <T> Type of list.
+     * @return List of remaining elements
+     */
+    public static <T> List<T> loseList(List<T> c, boolean cp, @Nullable Collection<? super T> filter) {
+        A.notNull(c, "c");
+
+        List<T> res;
+
+        if (!cp) {
+            res = c;
+
+            if (filter != null)
+                res.removeAll(filter);
+        }
+        else {
+            res = new LinkedList<>();
+
+            for (T t : c) {
+                if (filter == null || !filter.contains(t))
+                    res.add(t);
+            }
+        }
+
+        return res;
+    }
+
+    /**
+     * Loses all elements in input list for which any of the predicates evaluate to {@code true}.
+     *
+     * @param c Input list.
+     * @param cp If {@code true} method creates new list not modifying input,
+     *      otherwise does <tt>in-place</tt> modifications.
+     * @param p Looses all elements for which any of the predicates evaluate to {@code true}.
+     * @param <T> Type of list.
+     * @return List of remaining elements
+     */
+    public static <T> List<T> filterList(List<T> c, boolean cp, @Nullable IgnitePredicate<T>... p) {
+        A.notNull(c, "c");
+
+        List<T> res;
+
+        if (!cp) {
+            res = c;
+
+            if (p != null)
+                for (Iterator<T> it = c.iterator(); it.hasNext();)
+                    if (isAny(it.next(), p))
+                        it.remove();
+        }
+        else {
+            res = new ArrayList<>(c.size());
+
+            for (T t : c)
+                if (!isAny(t, p))
+                    res.add(t);
+        }
+
+        return res;
+    }
+
+    /**
      * Gets closure which converts node to node ID.
      *
      * @return Closure which converts node to node ID.
@@ -927,40 +1253,34 @@ public class GridFunc {
     }
 
     /**
-     * Retains all elements in input collection that are contained in {@code filter}.
+     * Creates predicates that evaluates to {@code true} for each node in given collection.
+     * Note that if collection is empty the result predicate will always evaluate to {@code false}.
+     * Implementation simply creates {@link GridNodePredicate} instance.
      *
-     * @param c Input collection.
-     * @param cp If {@code true} method creates collection not modifying input, otherwise does
-     *      <tt>in-place</tt> modifications.
-     * @param filter Filter collection. If filter collection is {@code null} or empty -
-     *      an empty collection will be returned.
-     * @param <T> Type of collections.
-     * @return Collection of retain elements.
+     * @param nodes Collection of nodes. If none provided - result predicate will always
+     *      return {@code false}.
+     * @return Predicates that evaluates to {@code true} for each node in given collection.
      */
-    public static <T0, T extends T0> Collection<T> retain(Collection<T> c, boolean cp,
-        @Nullable Collection<? extends T0> filter) {
-        A.notNull(c, "c");
-
-        return retain(c, cp, in(filter));
+    public static IgnitePredicate<ClusterNode> nodeForNodes(ClusterNode... nodes) {
+        return new GridNodePredicate(nodes);
     }
 
     /**
-     * Retains all elements in input collection that are evaluated to {@code true}
-     * by the given predicate.
+     * Retains all elements in input collection that are contained in {@code filter}.
      *
      * @param c Input collection.
      * @param cp If {@code true} method creates collection not modifying input, otherwise does
      *      <tt>in-place</tt> modifications.
-     * @param p Predicates to filter by. If no predicates provides - all elements
-     *      will be retained.
+     * @param filter Filter collection. If filter collection is {@code null} or empty -
+     *      an empty collection will be returned.
      * @param <T> Type of collections.
      * @return Collection of retain elements.
      */
-    public static <T> Collection<T> retain(Collection<T> c, boolean cp, IgnitePredicate<? super T> p) {
+    public static <T0, T extends T0> Collection<T> retain(Collection<T> c, boolean cp,
+        @Nullable Collection<? extends T0> filter) {
         A.notNull(c, "c");
-        A.notNull(p, "p");
 
-        return lose(c, cp, not(p));
+        return retain(c, cp, F0.in(filter));
     }
 
     /**
@@ -975,7 +1295,7 @@ public class GridFunc {
      * @param <T> Type of collections.
      * @return Collection of retain elements.
      */
-    public static <T> Collection<T> retain(Collection<T> c, boolean cp, @Nullable IgnitePredicate<? super T>[] p) {
+    public static <T> Collection<T> retain(Collection<T> c, boolean cp, @Nullable IgnitePredicate<? super T>... p) {
         A.notNull(c, "c");
 
         return lose(c, cp, not(p));
@@ -1025,19 +1345,36 @@ public class GridFunc {
     }
 
     /**
-     * Create list containing two elements.
+     * Curries given closure.
      *
-     * @param t1 First element.
-     * @param t2 Second element.
-     * @return List.
+     * @param f Closure.
+     * @param e Parameter.
+     * @param <T> Input type.
+     * @param <R> Output type.
+     * @return Curried closure.
      */
-    public static <T> List<T> asList(T t1, T t2) {
-        ArrayList<T> res = new ArrayList<>(2);
-
-        res.add(t1);
-        res.add(t2);
+    public static <T, R> IgniteOutClosure<R> curry(final IgniteClosure<? super T, R> f, final T e) {
+        return new IgniteOutClosure<R>() {
+            @Override public R apply() {
+                return f.apply(e);
+            }
+        };
+    }
 
-        return res;
+    /**
+     * Curries given closure.
+     *
+     * @param f Closure.
+     * @param e Parameter.
+     * @param <T> Input type.
+     * @return Curried closure.
+     */
+    public static <T> GridAbsClosure curry(final IgniteInClosure<? super T> f, final T e) {
+        return new GridAbsClosure() {
+            @Override public void apply() {
+                f.apply(e);
+            }
+        };
     }
 
     /**
@@ -1053,7 +1390,6 @@ public class GridFunc {
      * @param <T> Array type.
      * @return {@link List} instance for array.
      */
-    @SuppressWarnings("unchecked")
     public static <T> List<T> asList(@Nullable T... vals) {
         return isEmpty(vals) ? Collections.<T>emptyList() : Arrays.asList(vals);
     }
@@ -1064,9 +1400,8 @@ public class GridFunc {
      * @param <T> Type of the iterator.
      * @return Newly created empty iterator.
      */
-    @SuppressWarnings("unchecked")
     public static <T> GridIterator<T> emptyIterator() {
-        return EMPTY_ITER;
+        return new GridEmptyIterator<>();
     }
 
     /**
@@ -1239,29 +1574,6 @@ public class GridFunc {
     }
 
     /**
-     * Gets size of the given collection.
-     *
-     * @param c Collection.
-     * @return Size.
-     */
-    public static <T> int size(@Nullable Collection<? extends T> c) {
-        return c == null || c.isEmpty() ? 0 : c.size();
-    }
-
-    /**
-     * Gets size of the given collection with provided optional predicates.
-     *
-     * @param c Collection to size.
-     * @param p Optional predicates that filters out elements from count.
-     * @param <T> Type of the iterator.
-     * @return Number of elements in the collection for which all given predicates
-     *      evaluates to {@code true}. If no predicates is provided - all elements are counted.
-     */
-    public static <T> int size(@Nullable Collection<? extends T> c, IgnitePredicate<? super T> p) {
-        return c == null || c.isEmpty() ? 0 : isAlwaysTrue(p) ? c.size() : size(c.iterator(), p);
-    }
-
-    /**
      * Gets size of the given collection with provided optional predicates.
      *
      * @param c Collection to size.
@@ -1270,34 +1582,12 @@ public class GridFunc {
      * @return Number of elements in the collection for which all given predicates
      *      evaluates to {@code true}. If no predicates is provided - all elements are counted.
      */
-    public static <T> int size(@Nullable Collection<? extends T> c, @Nullable IgnitePredicate<? super T>[] p) {
+    public static <T> int size(@Nullable Collection<? extends T> c, @Nullable IgnitePredicate<? super T>... p) {
         return c == null || c.isEmpty() ? 0 : isEmpty(p) || isAlwaysTrue(p) ? c.size() : size(c.iterator(), p);
     }
 
     /**
-     * Gets size of the given iterator. Iterator will be traversed to get the count.
-     *
-     * @param it Iterator to size.
-     * @param <T> Type of the iterator.
-     * @return Number of elements in the iterator.
-     */
-    public static <T> int size(@Nullable Iterator<? extends T> it) {
-        if (it == null)
-            return 0;
-
-        int n = 0;
-
-        while (it.hasNext()) {
-            n++;
-
-            it.next();
-        }
-
-        return n;
-    }
-
-    /**
-     * Gets size of the given iterator with provided optional predicate. Iterator
+     * Gets size of the given iterator with provided optional predicates. Iterator
      * will be traversed to get the count.
      *
      * @param it Iterator to size.
@@ -1306,7 +1596,7 @@ public class GridFunc {
      * @return Number of elements in the iterator for which all given predicates
      *      evaluates to {@code true}. If no predicates is provided - all elements are counted.
      */
-    public static <T> int size(@Nullable Iterator<? extends T> it, IgnitePredicate<? super T> p) {
+    public static <T> int size(@Nullable Iterator<? extends T> it, @Nullable IgnitePredicate<? super T>... p) {
         if (it == null)
             return 0;
 
@@ -1314,7 +1604,7 @@ public class GridFunc {
 
         if (!isAlwaysFalse(p)) {
             while (it.hasNext()) {
-                if (p.apply(it.next()))
+                if (isAll(it.next(), p))
                     n++;
             }
         }
@@ -1323,52 +1613,34 @@ public class GridFunc {
     }
 
     /**
-     * Gets size of the given iterator with provided optional predicates. Iterator
-     * will be traversed to get the count.
-     *
-     * @param it Iterator to size.
-     * @param p Optional predicates that filters out elements from count.
-     * @param <T> Type of the iterator.
-     * @return Number of elements in the iterator for which all given predicates
-     *      evaluates to {@code true}. If no predicates is provided - all elements are counted.
-     */
-    public static <T> int size(@Nullable Iterator<? extends T> it, @Nullable IgnitePredicate<? super T>[] p) {
-        if (it == null)
-            return 0;
-
-        int n = 0;
-
-        if (!isAlwaysFalse(p)) {
-            while (it.hasNext()) {
-                if (isAll(it.next(), p))
-                    n++;
-            }
-        }
-
-        return n;
-    }
-
-    /**
-     * Creates write-through light-weight view on given collection.
+     * Creates write-through light-weight view on given collection with provided predicates. Resulting
+     * collection will only "have" elements for which all provided predicates, if any, evaluate
+     * to {@code true}. Note that only wrapping collection will be created and no duplication of
+     * data will occur. Also note that if array of given predicates is not empty then method
+     * {@code size()} uses full iteration through the collection.
      *
      * @param c Input collection that serves as a base for the view.
      * @param p Optional predicates. If predicates are not provided - all elements will be in the view.
      * @param <T> Type of the collection.
      * @return Light-weight view on given collection with provided predicate.
      */
-    public static <T> Collection<T> view(@Nullable final Collection<T> c, final IgnitePredicate<? super T> p) {
+    @SafeVarargs
+    public static <T> Collection<T> view(@Nullable final Collection<T> c,
+        @Nullable final IgnitePredicate<? super T>... p) {
         if (isEmpty(c) || isAlwaysFalse(p))
             return Collections.emptyList();
 
-        return isAlwaysTrue(p) ? c : new GridSerializableCollection<T>() {
+        assert c != null;
+
+        return isEmpty(p) || isAlwaysTrue(p) ? c : new GridSerializableCollection<T>() {
             // Pass through (will fail for readonly).
             @Override public boolean add(T e) {
-                return p.apply(e) && c.add(e);
+                return isAll(e, p) && c.add(e);
             }
 
             @NotNull
             @Override public Iterator<T> iterator() {
-                return identityIterator(c, p);
+                return F.iterator0(c, false, p);
             }
 
             @Override public int size() {
@@ -1376,82 +1648,117 @@ public class GridFunc {
             }
 
             @Override public boolean isEmpty() {
-                return !iterator().hasNext();
+                return F.isEmpty(p) ? c.isEmpty() : !iterator().hasNext();
             }
         };
     }
 
     /**
-     * Creates read-only light-weight view on given collection with transformation.
+     * Creates read-only light-weight view on given collection with transformation and provided
+     * predicates. Resulting collection will only "have" {@code transformed} elements for which
+     * all provided predicate, if any, evaluates to {@code true}. Note that only wrapping
+     * collection will be created and no duplication of data will occur. Also note that if array
+     * of given predicates is not empty then method {@code size()} uses full iteration through
+     * the collection.
      *
      * @param c Input collection that serves as a base for the view.
      * @param trans Transformation closure.
+     * @param p Optional predicated. If predicates are not provided - all elements will be in the view.
      * @param <T1> Type of the collection.
      * @return Light-weight view on given collection with provided predicate.
      */
     @SuppressWarnings("RedundantTypeArguments")
+    @SafeVarargs
     public static <T1, T2> Collection<T2> viewReadOnly(@Nullable final Collection<? extends T1> c,
-        final IgniteClosure<? super T1, T2> trans) {
+        final IgniteClosure<? super T1, T2> trans, @Nullable final IgnitePredicate<? super T1>... p) {
         A.notNull(trans, "trans");
 
-        if (isEmpty(c))
+        if (isEmpty(c) || isAlwaysFalse(p))
             return Collections.emptyList();
 
+        assert c != null;
+
         return new GridSerializableCollection<T2>() {
             @NotNull
             @Override public Iterator<T2> iterator() {
-                return F.<T1, T2>iteratorReadOnly(c, trans);
+                return F.<T1, T2>iterator(c, trans, true, p);
             }
 
             @Override public int size() {
-                return c.size();
+                return F.isEmpty(p) ? c.size() : F.size(iterator());
             }
 
             @Override public boolean isEmpty() {
-                return c.isEmpty();
+                return F.isEmpty(p) ? c.isEmpty() : !iterator().hasNext();
             }
         };
     }
 
     /**
-     * Creates read-only light-weight view on given collection with transformation and provided
-     * predicates. Resulting collection will only "have" {@code transformed} elements for which
-     * all provided predicate, if any, evaluates to {@code true}. Note that only wrapping
-     * collection will be created and no duplication of data will occur. Also note that if array
-     * of given predicates is not empty then method {@code size()} uses full iteration through
-     * the collection.
+     * Creates read-only light-weight view on given list with provided transformation.
+     * Resulting list will only "have" {@code transformed} elements. Note that only wrapping
+     * list will be created and no duplication of data will occur.
      *
-     * @param c Input collection that serves as a base for the view.
+     * @param c Input list that serves as a base for the view.
      * @param trans Transformation closure.
-     * @param p Optional predicated. If predicates are not provided - all elements will be in the view.
-     * @param <T1> Type of the collection.
-     * @return Light-weight view on given collection with provided predicate.
+     * @param <T1> Type of the list.
+     * @return Light-weight view on given list with provided transformation.
      */
     @SuppressWarnings("RedundantTypeArguments")
-    public static <T1, T2> Collection<T2> viewReadOnly(@Nullable final Collection<? extends T1> c,
-        final IgniteClosure<? super T1, T2> trans, @Nullable final IgnitePredicate<? super T1> p) {
+    public static <T1, T2> List<T2> viewListReadOnly(@Nullable final List<? extends T1> c,
+        final IgniteClosure<? super T1, T2> trans) {
         A.notNull(trans, "trans");
 
-        if (isEmpty(c) || isAlwaysFalse(p))
+        if (isEmpty(c))
             return Collections.emptyList();
 
-        return new GridSerializableCollection<T2>() {
+        assert c != null;
+
+        return new GridSerializableList<T2>() {
+            /** */
+            private static final long serialVersionUID = 3126625219739967068L;
+
+            @Override public T2 get(int idx) {
+                return trans.apply(c.get(idx));
+            }
+
             @NotNull
             @Override public Iterator<T2> iterator() {
-                return F.<T1, T2>iterator(c, trans, true, p);
+                return F.<T1, T2>iterator(c, trans, true);
             }
 
             @Override public int size() {
-                return F.size(iterator());
+                return c.size();
             }
 
             @Override public boolean isEmpty() {
-                return !iterator().hasNext();
+                return c.isEmpty();
             }
         };
     }
 
     /**
+     * Creates a view on given list with provided transformer and predicates.
+     * Resulting list will only "have" elements for which all provided predicates, if any,
+     * evaluate to {@code true}. Note that a new collection will be created and data will
+     * be copied.
+     *
+     * @param c Input list that serves as a base for the view.
+     * @param trans Transforming closure from T1 to T2.
+     * @param p Optional predicates. If predicates are not provided - all elements will be in the view.
+     * @return View on given list with provided predicate.
+     */
+    public static <T1, T2> List<T2> transformList(Collection<? extends T1> c,
+        IgniteClosure<? super T1, T2> trans, @Nullable IgnitePredicate<? super T1>... p) {
+        A.notNull(c, "c", trans, "trans");
+
+        if (isAlwaysFalse(p))
+            return Collections.emptyList();
+
+        return new ArrayList<>(transform(retain(c, true, p), trans));
+    }
+
+    /**
      * Creates light-weight view on given map with provided predicates. Resulting map will
      * only "have" keys for which all provided predicates, if any, evaluates to {@code true}.
      * Note that only wrapping map will be created and no duplication of data will occur.
@@ -1459,24 +1766,26 @@ public class GridFunc {
      * uses full iteration through the entry set.
      *
      * @param m Input map that serves as a base for the view.
-     * @param p Predicate.
+     * @param p Optional predicates. If predicates are not provided - all will be in the view.
      * @param <K> Type of the key.
      * @param <V> Type of the value.
      * @return Light-weight view on given map with provided predicate.
      */
     public static <K0, K extends K0, V0, V extends V0> Map<K, V> view(@Nullable final Map<K, V> m,
-        final IgnitePredicate<? super K> p) {
+        @Nullable final IgnitePredicate<? super K>... p) {
         if (isEmpty(m) || isAlwaysFalse(p))
             return Collections.emptyMap();
 
-        return isAlwaysTrue(p) ? m : new GridSerializableMap<K, V>() {
+        assert m != null;
+
+        return isEmpty(p) || isAlwaysTrue(p) ? m : new GridSerializableMap<K, V>() {
             /** */
             private static final long serialVersionUID = 5531745605372387948L;
 
             /** Entry predicate. */
             private IgnitePredicate<Entry<K, V>> ep = new P1<Map.Entry<K, V>>() {
                 @Override public boolean apply(Entry<K, V> e) {
-                    return p.apply(e.getKey());
+                    return isAll(e.getKey(), p);
                 }
             };
 
@@ -1485,7 +1794,7 @@ public class GridFunc {
                 return new GridSerializableSet<Map.Entry<K, V>>() {
                     @NotNull
                     @Override public Iterator<Entry<K, V>> iterator() {
-                        return identityIterator(m.entrySet(), ep);
+                        return iterator0(m.entrySet(), false, ep);
                     }
 
                     @Override public int size() {
@@ -1494,12 +1803,12 @@ public class GridFunc {
 
                     @SuppressWarnings({"unchecked"})
                     @Override public boolean remove(Object o) {
-                        return ep.apply((Map.Entry<K, V>)o) && m.entrySet().remove(o);
+                        return F.isAll((Map.Entry<K, V>)o, ep) && m.entrySet().remove(o);
                     }
 
                     @SuppressWarnings({"unchecked"})
                     @Override public boolean contains(Object o) {
-                        return ep.apply((Map.Entry<K, V>)o) && m.entrySet().contains(o);
+                        return F.isAll((Map.Entry<K, V>)o, ep) && m.entrySet().contains(o);
                     }
 
                     @Override public boolean isEmpty() {
@@ -1514,13 +1823,13 @@ public class GridFunc {
 
             @SuppressWarnings({"unchecked"})
             @Nullable @Override public V get(Object key) {
-                return p.apply((K)key) ? m.get(key) : null;
+                return isAll((K)key, p) ? m.get(key) : null;
             }
 
             @Nullable @Override public V put(K key, V val) {
                 V oldVal = get(key);
 
-                if (p.apply(key))
+                if (isAll(key, p))
                     m.put(key, val);
 
                 return oldVal;
@@ -1528,7 +1837,7 @@ public class GridFunc {
 
             @SuppressWarnings({"unchecked"})
             @Override public boolean containsKey(Object key) {
-                return p.apply((K)key) && m.containsKey(key);
+                return isAll((K)key, p) && m.containsKey(key);
             }
         };
     }
@@ -1542,26 +1851,38 @@ public class GridFunc {
      *
      * @param m Input map that serves as a base for the view.
      * @param trans Transformer for map value transformation.
+     * @param p Optional predicates. If predicates are not provided - all will be in the view.
      * @param <K> Type of the key.
      * @param <V> Type of the input map value.
      * @param <V1> Type of the output map value.
      * @return Light-weight view on given map with provided predicate and transformer.
      */
     public static <K0, K extends K0, V0, V extends V0, V1> Map<K, V1> viewReadOnly(@Nullable final Map<K, V> m,
-        final IgniteClosure<V, V1> trans) {
+        final IgniteClosure<V, V1> trans, @Nullable final IgnitePredicate<? super K>... p) {
         A.notNull(trans, "trans");
 
-        if (isEmpty(m))
+        if (isEmpty(m) || isAlwaysFalse(p))
             return Collections.emptyMap();
 
+        assert m != null;
+
+        final boolean hasPred = p != null && p.length > 0;
+
         return new GridSerializableMap<K, V1>() {
+            /** Entry predicate. */
+            private IgnitePredicate<Entry<K, V>> ep = new P1<Map.Entry<K, V>>() {
+                @Override public boolean apply(Entry<K, V> e) {
+                    return isAll(e.getKey(), p);
+                }
+            };
+
             @NotNull
             @Override public Set<Entry<K, V1>> entrySet() {
                 return new GridSerializableSet<Map.Entry<K, V1>>() {
                     @NotNull
                     @Override public Iterator<Entry<K, V1>> iterator() {
                         return new Iterator<Entry<K, V1>>() {
-                            private Iterator<Entry<K, V>> it = identityIteratorReadOnly(m.entrySet());
+                            private Iterator<Entry<K, V>> it = iterator0(m.entrySet(), true, ep);
 
                             @Override public boolean hasNext() {
                                 return it.hasNext();
@@ -1592,7 +1913,7 @@ public class GridFunc {
                     }
 
                     @Override public int size() {
-                        return m.size();
+                        return hasPred ? F.size(m.keySet(), p) : m.size();
                     }
 
                     @SuppressWarnings({"unchecked"})
@@ -1602,25 +1923,27 @@ public class GridFunc {
 
                     @SuppressWarnings({"unchecked"})
                     @Override public boolean contains(Object o) {
-                        return m.entrySet().contains(o);
+                        return F.isAll((Map.Entry<K, V>)o, ep) && m.entrySet().contains(o);
                     }
 
                     @Override public boolean isEmpty() {
-                        return m.isEmpty();
+                        return hasPred ? !iterator().hasNext() : m.isEmpty();
                     }
                 };
             }
 
             @Override public boolean isEmpty() {
-                return m.isEmpty();
+                return hasPred ? entrySet().isEmpty() : m.isEmpty();
             }
 
             @SuppressWarnings({"unchecked"})
             @Nullable @Override public V1 get(Object key) {
-                V v = m.get(key);
+                if (isAll((K)key, p)) {
+                    V v = m.get(key);
 
-                if (v != null)
-                    return trans.apply(v);
+                    if (v != null)
+                        return trans.apply(v);
+                }
 
                 return null;
             }
@@ -1635,34 +1958,170 @@ public class GridFunc {
 
             @SuppressWarnings({"unchecked"})
             @Override public boolean containsKey(Object key) {
-                return m.containsKey(key);
+                return isAll((K)key, p) && m.containsKey(key);
             }
         };
     }
 
     /**
-     * Read-only map view of a collection.
+     * Read-only view on map that supports transformation of values and key filtering. Resulting map will
+     * only "have" keys for which all provided predicates, if any, evaluates to {@code true}.
+     * Note that only wrapping map will be created and no duplication of data will occur.
+     * Also note that if array of given predicates is not empty then method {@code size()}
+     * uses full iteration through the entry set.
+     *
+     * @param m Input map that serves as a base for the view.
+     * @param trans Transformer for map value transformation.
+     * @param p Optional predicates. If predicates are not provided - all will be in the view.
+     * @param <K> Type of the key.
+     * @param <V> Type of the input map value.
+     * @param <V1> Type of the output map value.
+     * @return Light-weight view on given map with provided predicate and transformer.
+     */
+    public static <K0, K extends K0, V0, V extends V0, V1> Map<K, V1> viewReadOnly(@Nullable final Map<K, V> m,
+        final IgniteBiClosure<K, V, V1> trans, @Nullable final IgnitePredicate<? super K>... p) {
+        A.notNull(trans, "trans");
+
+        if (isEmpty(m) || isAlwaysFalse(p))
+            return Collections.emptyMap();
+
+        assert m != null;
+
+        return new GridSerializableMap<K, V1>() {
+            /** Entry predicate. */
+            private IgnitePredicate<Entry<K, V>> ep = new P1<Map.Entry<K, V>>() {
+                @Override public boolean apply(Entry<K, V> e) {
+                    return isAll(e.getKey(), p);
+                }
+            };
+
+            @NotNull
+            @Override public Set<Entry<K, V1>> entrySet() {
+                return new GridSerializableSet<Map.Entry<K, V1>>() {
+                    @NotNull
+                    @Override public Iterator<Entry<K, V1>> iterator() {
+                        return new Iterator<Entry<K, V1>>() {
+                            private Iterator<Entry<K, V>> it = iterator0(m.entrySet(), true, ep);
+
+                            @Override public boolean hasNext() {
+                                return it.hasNext();
+                            }
+
+                            @Override public Entry<K, V1> next() {
+                                final Entry<K, V> e = it.next();
+
+                                return new Entry<K, V1>() {
+                                    @Override public K getKey() {
+                                        return e.getKey();
+                                    }
+
+                                    @Override public V1 getValue() {
+                                        return trans.apply(e.getKey(), e.getValue());
+                                    }
+
+                                    @Override public V1 setValue(V1 val) {
+                                        throw new UnsupportedOperationException(
+                                            "Put is not supported for readonly map view.");
+                                    }
+                                };
+                            }
+
+                            @Override public void remove() {
+                                throw new UnsupportedOperationException("Remove is not support for readonly map view.");
+                            }
+                        };
+                    }
+
+                    @Override public int size() {
+                        return F.size(m.keySet(), p);
+                    }
+
+                    @SuppressWarnings({"unchecked"})
+                    @Override public boolean remove(Object o) {
+                        throw new UnsupportedOperationException("Remove is not support for readonly map view.");
+                    }
+
+                    @SuppressWarnings({"unchecked"})
+                    @Override public boolean contains(Object o) {
+                        return F.isAll((Map.Entry<K, V>)o, ep) && m.entrySet().contains(o);
+                    }
+
+                    @Override public boolean isEmpty() {
+                        return !iterator().hasNext();
+                    }
+                };
+            }
+
+            @Override public boolean isEmpty() {
+                return entrySet().isEmpty();
+            }
+
+            @SuppressWarnings({"unchecked"})
+            @Nullable @Override public V1 get(Object key) {
+                if (isAll((K)key, p)) {
+                    V v = m.get(key);
+
+                    if (v != null)
+                        return trans.apply((K)key, v);
+                }
+
+                return null;
+            }
+
+            @Nullable @Override public V1 put(K key, V1 val) {
+                throw new UnsupportedOperationException("Put is not supported for readonly map view.");
+            }
+
+            @Override public V1 remove(Object key) {
+                throw new UnsupportedOperationException("Remove is not supported for readonly map view.");
+            }
+
+            @SuppressWarnings({"unchecked"})
+            @Override public boolean containsKey(Object key) {
+                return isAll((K)key, p) && m.containsKey(key);
+            }
+        };
+    }
+
+    /**
+     * Read-only map view of a collection. Resulting map is a lightweight view of an input collection,
+     * with filtered elements of an input collection as keys, and closure execution results
+     * as values. The map will only contain keys for which all provided predicates, if any, evaluate
+     * to {@code true}. Note that only wrapping map will be created and no duplication of data will occur.
+     * Also note that if array of given predicates is not empty then method {@code size()}
+     * uses full iteration through the entry set.
      *
      * @param c Input collection.
      * @param mapClo Mapping closure, that maps key to value.
+     * @param p Optional predicates to filter input collection. If predicates are not provided - all
+     *          elements will be in the view.
      * @param <K> Key type.
      * @param <V> Value type.
      * @return Light-weight view on given map with provided predicates and mapping.
      */
     @SuppressWarnings("TypeMayBeWeakened")
     public static <K0, K extends K0, V0, V extends V0> Map<K, V> viewAsMap(@Nullable final Set<K> c,
-        final IgniteClosure<? super K, V> mapClo) {
+        final IgniteClosure<? super K, V> mapClo, @Nullable final IgnitePredicate<? super K>... p) {
         A.notNull(mapClo, "trans");
 
-        if (isEmpty(c))
+        if (isEmpty(c) || isAlwaysFalse(p))
             return Collections.emptyMap();
 
+        assert c != null;
+
         return new GridSerializableMap<K, V>() {
+            /** Entry predicate. */
+            private IgnitePredicate<K> ep = new P1<K>() {
+                @Override public boolean apply(K e) {
+                    return isAll(e, p);
+                }
+            };
+
             @NotNull @Override public Set<Entry<K, V>> entrySet() {
                 return new GridSerializableSet<Entry<K, V>>() {
                     @NotNull @Override public Iterator<Entry<K, V>> iterator() {
                         return new Iterator<Entry<K, V>>() {
-                            private Iterator<K> it = identityIteratorReadOnly(c);
+                            private Iterator<K> it = iterator0(c, true, ep);
 
                             @Override public boolean hasNext() {
                                 return it.hasNext();
@@ -1695,7 +2154,7 @@ public class GridFunc {
                     }
 
                     @Override public int size() {
-                        return c.size();
+                        return F.size(c, p);
                     }
 
                     @Override public boolean remove(Object o) {
@@ -1703,16 +2162,15 @@ public class GridFunc {
                     }
 
                     @Override public boolean isEmpty() {
-                        return c.isEmpty();
+                        return !iterator().hasNext();
                     }
                 };
             }
 
             @Override public boolean isEmpty() {
-                return c.isEmpty();
+                return entrySet().isEmpty();
             }
 
-            @SuppressWarnings("unchecked")
             @Nullable @Override public V get(Object key) {
                 if (containsKey(key))
                     return mapClo.apply((K)key);
@@ -1728,9 +2186,8 @@ public class GridFunc {
                 throw new UnsupportedOperationException("Remove is not supported for readonly collection view.");
             }
 
-            @SuppressWarnings("SuspiciousMethodCalls")
             @Override public boolean containsKey(Object key) {
-                return c.contains(key);
+                return isAll((K)key, p) && c.contains(key);
             }
         };
     }
@@ -1833,6 +2290,40 @@ public class GridFunc {
     }
 
     /**
+     * Utility map getter. This method analogous to {@link #addIfAbsent(Map, Object, Callable)}
+     * method but this one doesn't put the default value into the map when key is not found.
+     *
+     * @param map Map to get value from.
+     * @param key Map key (can be {@code null}).
+     * @param c Optional factory closure for the default value to be returned in
+     *      when {@code key} is not found. If closure is not provided - {@code null} will be returned.
+     * @param <K> Map key type.
+     * @param <V> Map value type.
+     * @return Value for the {@code key} or default value produced by {@code c} if key is not
+     *      found (or {@code null} if key is not found and closure is not provided).
+     * @throws GridClosureException Thrown in case when callable throws exception.
+     * @see #newLinkedList()
+     * @see #newList()
+     * @see #newSet()
+     * @see #newMap()
+     * @see #newAtomicLong()
+     * @see #newAtomicInt()
+     * @see #newAtomicRef()
+     * @see #newAtomicBoolean()
+     */
+    @Nullable public static <K, V> V returnIfAbsent(Map<? extends K, ? extends V> map, @Nullable K key,
+        @Nullable Callable<V> c) {
+        A.notNull(map, "map");
+
+        try {
+            return !map.containsKey(key) ? c == null ? null : c.call() : map.get(key);
+        }
+        catch (Exception e) {
+            throw wrap(e);
+        }
+    }
+
+    /**
      * Returns a factory closure that creates new {@link ConcurrentLinkedDeque8} instance.
      * Note that this method does not create a new closure but returns a static one.
      *
@@ -1846,6 +2337,82 @@ public class GridFunc {
     }
 
     /**
+     * Returns a factory closure that creates new {@link List} instance. Note that this
+     * method does not create a new closure but returns a static one.
+     *
+     * @param <T> Type parameters for the created {@link List}.
+     * @return Factory closure that creates new {@link List} instance every
+     *      time its {@link org.apache.ignite.lang.IgniteOutClosure#apply()} method is called.
+     */
+    @SuppressWarnings("unchecked")
+    public static <T> IgniteCallable<List<T>> newList() {
+        return (IgniteCallable<List<T>>)LIST_FACTORY;
+    }
+
+    /**
+     * Returns a factory closure that creates new {@link AtomicInteger} instance
+     * initialized to {@code zero}. Note that this method does not create a new
+     * closure but returns a static one.
+     *
+     * @return Factory closure that creates new {@link AtomicInteger} instance
+     *      initialized to {@code zero} every time its {@link org.apache.ignite.lang.IgniteOutClosure#apply()} method is called.
+     */
+    public static IgniteCallable<AtomicInteger> newAtomicInt() {
+        return ATOMIC_INT_FACTORY;
+    }
+
+    /**
+     * Returns a factory closure that creates new {@link AtomicLong} instance
+     * initialized to {@code zero}. Note that this method does not create a new
+     * closure but returns a static one.
+     *
+     * @return Factory closure that creates new {@link AtomicLong} instance
+     *      initialized to {@code zero} every time its {@link org.apache.ignite.lang.IgniteOutClosure#apply()} method is called.
+     */
+    public static IgniteCallable<AtomicLong> newAtomicLong() {
+        return ATOMIC_LONG_FACTORY;
+    }
+
+    /**
+     * Returns a factory closure that creates new {@link AtomicReference} instance
+     * initialized to {@code null}. Note that this method does not create a new closure
+     * but returns a static one.
+     *
+     * @param <T> Type of the atomic reference.
+     * @return Factory closure that creates new {@link AtomicReference} instance
+     *      initialized to {@code null} every time its {@link org.apache.ignite.lang.IgniteOutClosure#apply()} method is called.
+     */
+    @SuppressWarnings("unchecked")
+    public static <T> IgniteCallable<AtomicReference<T>> newAtomicRef() {
+        return (IgniteCallable<AtomicReference<T>>)ATOMIC_REF_FACTORY;
+    }
+
+    /**
+     * Returns a factory closure that creates new {@link AtomicBoolean} instance
+     * initialized to {@code false}. Note that this method does not create a new
+     * closure but returns a static one.
+     *
+     * @return Factory closure that creates new {@link AtomicBoolean} instance
+     *      initialized to {@code false} every time its {@link org.apache.ignite.lang.IgniteOutClosure#apply()} method is called.
+     */
+    public static IgniteCallable<AtomicBoolean> newAtomicBoolean() {
+        return ATOMIC_BOOL_FACTORY;
+    }
+
+    /**
+     * Returns a factory closure that creates new {@link LinkedList} instance.
+     * Note that this method does not create a new closure but returns a static one.
+     *
+     * @param <T> Type parameters for the created {@link LinkedList}.
+     * @return Factory closure that creates new {@link LinkedList} instance every time its {@link
+     *         org.apache.ignite.lang.IgniteOutClosure#apply()} method is called.
+     */
+    @SuppressWarnings("unchecked")
+    public static <T> IgniteCallable<LinkedList<T>> newLinkedList() {
+        return (IgniteCallable<LinkedList<T>>)LINKED_LIST_FACTORY;
+    }
+
+    /**
      * Returns a factory closure that creates new {@link Set} instance. Note that this
      * method does not create a new closure but returns a static one.
      *
@@ -1859,6 +2426,20 @@ public class GridFunc {
     }
 
     /**
+     * Returns a factory closure that creates new {@link Map} instance. Note
+     * that this method does not create a new closure but returns a static one.
+     *
+     * @param <K> Type of the key for the created {@link Map}.
+     * @param <V> Type of the value for the created {@link Map}.
+     * @return Factory closure that creates new {@link Map} instance every
+     *      time its {@link org.apache.ignite.lang.IgniteOutClosure#apply()} method is called.
+     */
+    @SuppressWarnings("unchecked")
+    public static <K, V> IgniteCallable<Map<K, V>> newMap() {
+        return (IgniteCallable<Map<K, V>>)MAP_FACTORY;
+    }
+
+    /**
      * Returns a factory closure that creates new {@link ConcurrentMap} instance.
      * Note that this method does not create a new closure but returns a static one.
      *
@@ -1885,18 +2466,6 @@ public class GridFunc {
     }
 
     /**
-     * Creates and returns iterator from given collection.
-     *
-     * @param c Input collection.
-     * @param <T> Type of the collection elements.
-     * @return Iterator from given collection and optional filtering predicate.
-     */
-    @SuppressWarnings({"unchecked"})
-    public static <T> GridIterator<T> identityIteratorReadOnly(Iterable<? extends T> c) {
-        return iteratorReadOnly(c, IDENTITY);
-    }
-
-    /**
      * Creates and returns iterator from given collection and optional filtering predicates.
      * Returned iterator will only have elements for which all given predicates evaluates to
      * {@code true} (if provided). Note that this method will not create new collection but
@@ -1904,29 +2473,16 @@ public class GridFunc {
      * evaluate to {@code true} for.
      *
      * @param c Input collection.
-     * @param p Optional filtering predicate.
+     * @param readOnly If {@code true}, then resulting iterator will not allow modifications
+     *      to the underlying collection.
+     * @param p Optional filtering predicates.
      * @param <T> Type of the collection elements.
      * @return Iterator from given collection and optional filtering predicate.
      */
     @SuppressWarnings({"unchecked"})
-    public static <T> GridIterator<T> identityIterator(Iterable<? extends T> c, IgnitePredicate<? super T> p) {
-        return iterator(c, IDENTITY, false, p);
-    }
-
-    /**
-     * Creates and returns transforming iterator from given collection.
-     *
-     * @param c Input collection.
-     * @param trans Transforming closure to convert from T1 to T2.
-     * @param <T1> Type of the collection elements.
-     * @param <T2> Type of returned elements.
-     * @return Iterator from given collection and optional filtering predicate.
-     */
-    public static <T1, T2> GridIterator<T2> iteratorReadOnly(final Iterable<? extends T1> c,
-        final IgniteClosure<? super T1, T2> trans) {
-        A.notNull(c, "c", trans, "trans");
-
-        return iterator(c.iterator(), trans, true);
+    public static <T> GridIterator<T> iterator0(Iterable<? extends T> c, boolean readOnly,
+        IgnitePredicate<? super T>... p) {
+        return F.iterator(c, IDENTITY, readOnly, p);
     }
 
     /**
@@ -1940,14 +2496,15 @@ public class GridFunc {
      * @param trans Transforming closure to convert from T1 to T2.
      * @param readOnly If {@code true}, then resulting iterator will not allow modifications
      *      to the underlying collection.
-     * @param p Filtering predicate.
+     * @param p Optional filtering predicates.
      * @param <T1> Type of the collection elements.
      * @param <T2> Type of returned elements.
      * @return Iterator from given collection and optional filtering predicate.
      */
     public static <T1, T2> GridIterator<T2> iterator(final Iterable<? extends T1> c,
-        final IgniteClosure<? super T1, T2> trans, final boolean readOnly, final IgnitePredicate<? super T1> p) {
-        A.notNull(c, "c", trans, "trans", p, "p");
+        final IgniteClosure<? super T1, T2> trans, final boolean readOnly,
+        @Nullable final IgnitePredicate<? super T1>... p) {
+        A.notNull(c, "c", trans, "trans");
 
         if (isAlwaysFalse(p))
             return F.emptyIterator();
@@ -1966,36 +2523,53 @@ public class GridFunc {
             private Iterator<? extends T1> iter = c.iterator();
 
             @Override public boolean hasNextX() {
-                if (!moved)
-                    return more;
+                if (isEmpty(p))
+                    return iter.hasNext();
                 else {
-                    more = false;
+                    if (!moved)
+                        return more;
+                    else {
+                        more = false;
+
+                        while (iter.hasNext()) {
+                            elem = iter.next();
 
-                    while (iter.hasNext()) {
-                        elem = iter.next();
+                            boolean isAll = true;
 
-                        if (p.apply(elem)) {
-                            more = true;
-                            moved = false;
+                            for (IgnitePredicate<? super T1> r : p)
+                                if (r != null && !r.apply(elem)) {
+                                    isAll = false;
 
-                            return true;
+                                    break;
+                                }
+
+                            if (isAll) {
+                                more = true;
+                                moved = false;
+
+                                return true;
+                            }
                         }
-                    }
 
-                    elem = null; // Give to GC.
+                        elem = null; // Give to GC.
 
-                    return false;
+                        return false;
+                    }
                 }
             }
 
             @Nullable @Override public T2 nextX() {
-                if (hasNext()) {
-                    moved = true;
+                if (isEmpty(p))
+                    return trans.apply(iter.next());
+                else {
+                    if (hasNext()) {
+                        moved = true;
 
-                    return trans.apply(elem);
+                        return trans.apply(elem);
+                    }
+                    else
+                        throw new NoSuchElementException();
                 }
-                else
-                    throw new NoSuchElementException();
             }
 
             @Override public void removeX() {
@@ -2012,22 +2586,80 @@ public class GridFunc {
      * @param trans Transforming closure to convert from T1 to T2.
      * @param readOnly If {@code true}, then resulting iterator will not allow modifications
      *      to the underlying collection.
+     * @param p Optional filtering predicates.
      * @return Iterator from given iterator and optional filtering predicate.
      */
-    public static <T1, T2> GridIterator<T2> iterator(final Iterator<? extends T1> c,
-        final IgniteClosure<? super T1, T2> trans, final boolean readOnly) {
+    public static <T1, T2> Iterator<T2> iterator(final Iterator<? extends T1> c,
+        final IgniteClosure<? super T1, T2> trans,
+        final boolean readOnly,
+        @Nullable final IgnitePredicate<? super T1>... p)
+    {
         A.notNull(c, "c", trans, "trans");
 
+        if (isAlwaysFalse(p))
+            return F.emptyIterator();
+
         return new GridIteratorAdapter<T2>() {
             /** */
+            private T1 elem;
+
+            /** */
+            private boolean moved = true;
+
+            /** */
+            private boolean more;
+
+            /** */
             private Iterator<? extends T1> iter = c;
 
             @Override public boolean hasNextX() {
-                return iter.hasNext();
+                if (isEmpty(p))
+                    return iter.hasNext();
+                else {
+                    if (!moved)
+                        return more;
+                    else {
+                        more = false;
+
+                        while (iter.hasNext()) {
+                            elem = iter.next();
+
+                            boolean isAll = true;
+
+                            for (IgnitePredicate<? super T1> r : p)
+                                if (r != null && !r.apply(elem)) {
+                                    isAll = false;
+
+                                    break;
+                                }
+
+                            if (isAll) {
+                                more = true;
+                                moved = false;
+
+                                return true;
+                            }
+                        }
+
+                        elem = null; // Give to GC.
+
+                        return false;
+                    }
+                }
             }
 
             @Nullable @Override public T2 nextX() {
-                return trans.apply(iter.next());
+                if (isEmpty(p))
+                    return trans.apply(iter.next());
+                else {
+                    if (hasNext()) {
+                        moved = true;
+
+                        return trans.apply(elem);
+                    }
+                    else
+                        throw new NoSuchElementException();
+                }
             }
 
             @Override public void removeX() {
@@ -2108,35 +2740,23 @@ public class GridFunc {
     }
 
     /**
-     * Gets predicate that evaluates to {@code true} if its free variable is not {@code null}.
+     * Gets predicate that evaluates to {@code true} if its free variable is {@code null}.
      *
      * @param <T> Type of the free variable, i.e. the element the predicate is called on.
-     * @return Predicate that evaluates to {@code true} if its free variable is not {@code null}.
+     * @return Predicate that evaluates to {@code true} if its free variable is {@code null}.
      */
-    @SuppressWarnings("unchecked")
-    public static <T> IgnitePredicate<T> notNull() {
-        return (IgnitePredicate<T>)IS_NOT_NULL;
+    public static <T> IgnitePredicate<T> isNull() {
+        return (IgnitePredicate<T>) IS_NULL;
     }
 
     /**
-     * Negates given predicate.
-     * <p>
-     * Gets predicate that evaluates to {@code true} if any of given predicates
-     * evaluates to {@code false}. If all predicates evaluate to {@code true} the
-     * result predicate will evaluate to {@code false}.
+     * Gets predicate that evaluates to {@code true} if its free variable is not {@code null}.
      *
-     * @param p Predicate to negate.
      * @param <T> Type of the free variable, i.e. the element the predicate is called on.
-     * @return Negated predicate.
+     * @return Predicate that evaluates to {@code true} if its free variable is not {@code null}.
      */
-    public static <T> IgnitePredicate<T> not(final IgnitePredicate<? super T> p) {
-        A.notNull(p, "p");
-
-        return isAlwaysFalse(p) ? F.<T>alwaysTrue() : isAlwaysTrue(p) ? F.<T>alwaysFalse() : new P1<T>() {
-            @Override public boolean apply(T t) {
-                return !p.apply(t);
-            }
-        };
+    public static <T> IgnitePredicate<T> notNull() {
+        return (IgnitePredicate<T>) IS_NOT_NULL;
     }
 
     /**
@@ -2150,7 +2770,8 @@ public class GridFunc {
      * @param <T> Type of the free variable, i.e. the element the predicate is called on.
      * @return Negated predicate.
      */
-    public static <T> IgnitePredicate<T> not(@Nullable final IgnitePredicate<? super T>[] p) {
+    @SafeVarargs
+    public static <T> IgnitePredicate<T> not(@Nullable final IgnitePredicate<? super T>... p) {
         return isAlwaysFalse(p) ? F.<T>alwaysTrue() : isAlwaysTrue(p) ? F.<T>alwaysFalse() : new P1<T>() {
             @Override public boolean apply(T t) {
                 return !isAll(t, p);
@@ -2193,13 +2814,30 @@ public class GridFunc {
     }
 
     /**
+     * Gets predicate that evaluates to {@code true} if its free variable is instance of the given class.
+     *
+     * @param cls Class to compare to.
+     * @param <T> Type of the free variable, i.e. the element the predicate is called on.
+     * @return Predicate that evaluates to {@code true} if its free variable is instance
+     *      of the given class.
+     */
+    public static <T> IgnitePredicate<T> instanceOf(final Class<?> cls) {
+        A.notNull(cls, "cls");
+
+        return new P1<T>() {
+            @Override public boolean apply(T t) {
+                return t != null && cls.isAssignableFrom(t.getClass());
+            }
+        };
+    }
+
+    /**
      * Gets first element from given collection or returns {@code null} if the collection is empty.
      *
      * @param c A collection.
      * @param <T> Type of the collection.
      * @return Collections' first element or {@code null} in case if the collection is empty.
      */
-    @SuppressWarnings("unchecked")
     public static <T> T first(@Nullable Iterable<? extends T> c) {
         if (c == null)
             return null;
@@ -2232,11 +2870,12 @@ public class GridFunc {
      * @param <T> Type of the collection.
      * @return Collections' first element or {@code null} in case if the collection is empty.
      */
-    @SuppressWarnings("unchecked")
     @Nullable public static <T> T last(@Nullable Iterable<? extends T> c) {
         if (c == null)
             return null;
 
+        assert c != null;
+
         if (c instanceof RandomAccess && c instanceof List) {
             List<T> l = (List<T>)c;
 
@@ -2321,6 +2960,8 @@ public class GridFunc {
             return F.alwaysTrue();
 
         if (F0.isAllNodePredicates(ps)) {
+            assert ps != null;
+
             Set<UUID> ids = new HashSet<>();
 
             for (IgnitePredicate<? super T> p : ps) {
@@ -2340,6 +2981,8 @@ public class GridFunc {
         else {
             return new P1<T>() {
                 @Override public boolean apply(T t) {
+                    assert ps != null;
+
                     for (IgnitePredicate<? super T> p : ps)
                         if (p != null && !p.apply(t))
                             return false;
@@ -2376,24 +3019,6 @@ public class GridFunc {
     }
 
     /**
-     * Gets predicate (not peer-deployable) that returns {@code true} if its free variable is contained
-     * in given collection.
-     *
-     * @param c Collection to check for containment.
-     * @param <T> Type of the free variable for the predicate and type of the
-     *      collection elements.
-     * @return Predicate (not peer-deployable) that returns {@code true} if its free variable is
-     *      contained in given collection.
-     */
-    public static <T> IgnitePredicate<T> in(@Nullable final Collection<? extends T> c) {
-        return isEmpty(c) ? GridFunc.<T>alwaysFalse() : new P1<T>() {
-            @Override public boolean apply(T t) {
-                return c.contains(t);
-            }
-        };
-    }
-
-    /**
      * Gets predicate that returns {@code true} if its free variable is not
      * contained in given collection.
      *
@@ -2406,6 +3031,8 @@ public class GridFunc {
     public static <T> IgnitePredicate<T> notIn(@Nullable final Collection<? extends T> c) {
         return isEmpty(c) ? GridFunc.<T>alwaysTrue() : new P1<T>() {
             @Override public boolean apply(T t) {
+                assert c != null;
+
                 return !c.contains(t);
             }
         };
@@ -2418,13 +3045,27 @@ public class GridFunc {
      */
     @SuppressWarnings("unchecked")
     public static <T, C extends Collection<T>> C addAll(C c, Iterable<? extends T> it) {
+        if (it == null)
+            return c;
+
+        if (it instanceof Collection<?>) {
+            c.addAll((Collection<? extends T>)it);
+
+            return c;
+        }
+
+        return addAll(c, it.iterator());
+    }
+
+    /**
+     * @param c Target collection.
+     * @param it Iterator to fetch.
+     * @return Modified target collection.
+     */
+    public static <T, C extends Collection<T>> C addAll(C c, Iterator<? extends T> it) {
         if (it != null) {
-            if (it instanceof Collection<?>)
-                c.addAll((Collection<? extends T>)it);
-            else {
-                for (T item : it)
-                    c.add(item);
-            }
+            while (it.hasNext())
+                c.add(it.next());
         }
 
         return c;
@@ -2501,7 +3142,14 @@ public class GridFunc {
      *      found (or {@code null} if key is not found and closure is not provided). Note that
      *      in case when key is not found the default value will be put into the map.
      * @throws GridClosureException Thrown in case when callable throws exception.
+     * @see #newLinkedList()
+     * @see #newList()
      * @see #newSet()
+     * @see #newMap()
+     * @see #newAtomicLong()
+     * @see #newAtomicInt()
+     * @see #newAtomicRef()
+     * @see #newAtomicBoolean()
      */
     @Nullable public static <K, V> V addIfAbsent(Map<? super K, V> map, @Nullable K key,
         @Nullable Callable<? extends V> c) {
@@ -2579,34 +3227,79 @@ public class GridFunc {
      *
      * @param c Collection to call closure over.
      * @param f Side-effect only closure to call over the collection.
+     * @param p Optional set of predicates. Only if collection element evaluates
+     *      to {@code true} for given predicates the closure will be applied to it.
+     *      If no predicates provided - closure will be applied to all collection
+     *      elements.
      * @param <X> Type of the free variable for the closure and type of the
      *      collection elements.
      */
-    public static <X> void forEach(Iterable<? extends X> c, IgniteInClosure<? super X> f) {
-        A.notNull(c, "c", f, "f");
+    public static <X> void forEach(Iterable<? extends X> c, IgniteInClosure<? super X> f,
+        @Nullable IgnitePredicate<? super X>... p) {
+        A.notNull(c, "c", f, "f");
+
+        for (X x : c)
+            if (isAll(x, p))
+                f.apply(x);
+    }
+
+    /**
+     * Calls given {@code side-effect only} closure over the each element of the provided array.
+     *
+     * @param c Array to call closure over.
+     * @param f Side-effect only closure to call over the array.
+     * @param p Optional set of predicates. Only if collection element evaluates
+     *      to {@code true} for given predicates the closure will be applied to it.
+     *      If no predicates provided - closure will be applied to all collection
+     *      elements.
+     * @param <X> Type of the free variable for the closure and type of the array
+     *      elements.
+     */
+    @SuppressWarnings("RedundantTypeArguments")
+    public static <X> void forEach(X[] c, IgniteInClosure<? super X> f, @Nullable IgnitePredicate<? super X>... p) {
+        A.notNull(c, "c", f, "f");
+
+        F.<X>forEach(asList(c), f, p);
+    }
+
+    /**
+     * Adds (copies) to given collection all elements in <tt>'from'</tt> array.
+     *
+     * @param to Collection to copy to.
+     * @param from Array to copy from.
+     * @param <T> Type of the free variable for the predicate and type of the collection elements.
+     * @return Collection to copy to.
+     */
+    public static <T> Collection<T> copy(Collection<T> to, T... from) {
+        A.notNull(to, "to", from, "from");
 
-        for (X x : c)
-            f.apply(x);
+        copy(to, asList(from));
+
+        return to;
     }
 
     /**
-     * Calls given {@code side-effect only} closure over the each element of the provided
-     * collection.
+     * Adds (copies) to given collection using provided predicates. Element is copied if all
+     * predicates evaluate to {@code true}.
      *
-     * @param c Collection to call closure over.
-     * @param f Side-effect only closure to call over the collection.
-     * @param p Optional predicate. Only if collection element evaluates
-     *      to {@code true} for given predicate the closure will be applied to it.
-     * @param <X> Type of the free variable for the closure and type of the
-     *      collection elements.
+     * @param to Collection to copy to.
+     * @param from Collection to copy from.
+     * @param p Optional set of predicates to use for filtration.
+     * @param <T> Type of the free variable for the predicate and type of the collection elements.
+     * @return Collection to copy to.
      */
-    public static <X> void forEach(Iterable<? extends X> c, IgniteInClosure<? super X> f,
-        IgnitePredicate<? super X> p) {
-        A.notNull(c, "c", f, "f", p, "f");
+    public static <T> Collection<T> copy(Collection<T> to, Iterable<? extends T> from,
+        @Nullable IgnitePredicate<? super T>... p) {
+        A.notNull(to, "to", from, "from");
 
-        for (X x : c)
-            if (p.apply(x))
-                f.apply(x);
+        if (!isAlwaysFalse(p)) {
+            for (T t : from) {
+                if (isAll(t, p))
+                    to.add(t);
+            }
+        }
+
+        return to;
     }
 
     /**
@@ -2643,6 +3336,21 @@ public class GridFunc {
     }
 
     /**
+     * Transforms an array to read only collection using provided closure.
+     *
+     * @param c Initial array to transform.
+     * @param f Closure to use for transformation.
+     * @param <X> Type of the free variable for the closure and type of the array elements.
+     * @param <Y> Type of the closure's return value.
+     * @return Transformed read only collection.
+     */
+    public static <X, Y> Collection<Y> transform(X[] c, IgniteClosure<? super X, Y> f) {
+        A.notNull(c, "c", f, "f");
+
+        return viewReadOnly(asList(c), f);
+    }
+
+    /**
      * Tests if all provided predicates evaluate to {@code true} for given value. Note that
      * evaluation will be short-circuit when first predicate evaluated to {@code false} is found.
      *
@@ -2653,7 +3361,7 @@ public class GridFunc {
      * @return Returns {@code true} if given set of predicates is {@code null}, is empty, or all predicates
      *      evaluate to {@code true} for given value, {@code false} otherwise.
      */
-    public static <T> boolean isAll(@Nullable T t, @Nullable IgnitePredicate<? super T>[] p) {
+    public static <T> boolean isAll(@Nullable T t, @Nullable IgnitePredicate<? super T>... p) {
         if (p != null)
             for (IgnitePredicate<? super T> r : p)
                 if (r != null && !r.apply(t))
@@ -2663,6 +3371,27 @@ public class GridFunc {
     }
 
     /**
+     * Tests if any of provided predicates evaluate to {@code true} for given value. Note
+     * that evaluation will be short-circuit when first predicate evaluated to {@code true}
+     * is found.
+     *
+     * @param t Value to test.
+     * @param p Optional set of predicates to use for evaluation.
+     * @param <T> Type of the value and free variable of the predicates.
+     * @return Returns {@code true} if any of predicates evaluates to {@code true} for given
+     *      value, {@code false} otherwise. Returns {@code false} if given set of predicates
+     *      is {@code null} or empty.
+     */
+    public static <T> boolean isAny(@Nullable T t, @Nullable IgnitePredicate<? super T>... p) {
+        if (p != null)
+            for (IgnitePredicate<? super T> r : p)
+                if (r != null && r.apply(t))
+                    return true;
+
+        return false;
+    }
+
+    /**
      * Creates an absolute (no-arg) closure that does nothing.
      *
      * @return Absolute (no-arg) closure that does nothing.
@@ -2682,12 +3411,14 @@ public class GridFunc {
      * @return First element in given collection for which predicate evaluates to
      *      {@code true} - or {@code null} if such element cannot be found.
      */
-    @Nullable public static <V> V find(Iterable<? extends V> c, @Nullable V dfltVal, IgnitePredicate<? super V> p) {
+    @SafeVarargs
+    @Nullable public static <V> V find(Iterable<? extends V> c, @Nullable V dfltVal,
+        @Nullable IgnitePredicate<? super V>... p) {
         A.notNull(c, "c");
 
-        if (!isAlwaysFalse(p)) {
+        if (!isEmpty(p) && !isAlwaysFalse(p)) {
             for (V v : c) {
-                if (p.apply(v))
+                if (isAny(v, p))
                     return v;
             }
         }
@@ -2696,6 +3427,35 @@ public class GridFunc {
     }
 
     /**
+     * Finds, transforms and returns first element in given collection for which any of
+     * the provided predicates evaluates to {@code true}.
+     *
+     * @param c Input collection.
+     * @param dfltVal Default value to return when no element is found.
+     * @param f Transforming closure.
+     * @param p Optional set of finder predicates.
+     * @param <V> Type of the collection elements.
+     * @return First element in given collection for which predicate evaluates to
+     *      {@code true} - or {@code null} if such element cannot be found.
+     */
+    public static <V, Y> Y find(Iterable<? extends V> c, @Nullable Y dfltVal, IgniteClosure<? super V, Y> f,
+        @Nullable IgnitePredicate<? super V>... p) {
+        A.notNull(c, "c", f, "f");
+
+        if (isAlwaysTrue(p) && c.iterator().hasNext())
+            return f.apply(c.iterator().next());
+
+        if (!isEmpty(p) && !isAlwaysFalse(p)) {
+            for (V v : c) {
+                if (isAny(v, p))
+                    return f.apply(v);
+            }
+        }
+
+        return dfltVal;
+    }
+
+    /**
      * Checks if collection {@code c1} contains any elements from collection {@code c2}.
      *
      * @param c1 Collection to check for containment. If {@code null} - this method returns {@code false}.
@@ -2722,7 +3482,7 @@ public class GridFunc {
      * @return {@code true} if collection {@code c1} contains at least one element from collection
      *      {@code c2}.
      */
-    public static <T> boolean containsAny(@Nullable Collection<? extends T> c1, @Nullable T[] c2) {
+    public static <T> boolean containsAny(@Nullable Collection<? extends T> c1, @Nullable T... c2) {
         if (c1 != null && !c1.isEmpty() && c2 != null && c2.length > 0)
             for (T t : c2)
                 if (c1.contains(t))
@@ -2766,6 +3526,35 @@ public class GridFunc {
     }
 
     /**
+     * Partitions input collection in two: first containing elements for which given
+     * predicate evaluates to {@code true} - and second containing the elements for which
+     * predicate evaluates to {@code false}.
+     *
+     * @param c Input collection.
+     * @param p Partitioning predicate.
+     * @param <V> Type of the collection elements.
+     * @return Tuple of two collections: first containing elements for which given predicate
+     *      evaluates to {@code true} - and second containing the elements for which predicate
+     *      evaluates to {@code false}.
+     */
+    public static <V> IgniteBiTuple<Collection<V>, Collection<V>> partition(Iterable<? extends V> c,
+        IgnitePredicate<? super V> p) {
+        A.notNull(c, "c", p, "p");
+
+        Collection<V> c1 = new LinkedList<>();
+        Collection<V> c2 = new LinkedList<>();
+
+        for (V v : c) {
+            if (p.apply(v))
+                c1.add(v);
+            else
+                c2.add(v);
+        }
+
+        return t(c1, c2);
+    }
+
+    /**
      * Checks for existence of the element in input collection for which all provided predicates
      * evaluate to {@code true}.
      *
@@ -2775,16 +3564,18 @@ public class GridFunc {
      * @return {@code true} if input collection contains element for which all the provided
      *      predicates evaluates to {@code true} - otherwise returns {@code false}.
      */
-    public static <V> boolean exist(Iterable<? extends V> c, IgnitePredicate<? super V> p) {
+    public static <V> boolean exist(Iterable<? extends V> c, @Nullable IgnitePredicate<? super V>... p) {
         A.notNull(c, "c");
 
         if (isAlwaysFalse(p))
             return false;
         else if (isAlwaysTrue(p))
             return true;
+        else if (isEmpty(p))
+            return true;
         else
             for (V v : c)
-                if (p.apply(v))
+                if (isAll(v, p))
                     return true;
 
         return false;
@@ -2801,16 +3592,16 @@ public class GridFunc {
      * @return Returns {@code true} if all given predicates evaluate to {@code true} for
      *      all elements. Returns {@code false} otherwise.
      */
-    public static <V> boolean forAll(Iterable<? extends V> c, IgnitePredicate<? super V> p) {
+    public static <V> boolean forAll(Iterable<? extends V> c, @Nullable IgnitePredicate<? super V>... p) {
         A.notNull(c, "c");
 
         if (isAlwaysFalse(p))
             return false;
         else if (isAlwaysTrue(p))
             return true;
-        else {
+        else if (!isEmpty(p)) {
             for (V v : c) {
-                if (!p.apply(v))
+                if (!isAll(v, p))
                     return false;
             }
         }
@@ -2830,18 +3621,17 @@ public class GridFunc {
      *      entries. Returns {@code false} otherwise.
      */
     public static <K1, K extends K1, V1, V extends V1> boolean forAll(Map<K, V> m,
-        IgnitePredicate<? super Map.Entry<K, V>> p) {
+        @Nullable IgnitePredicate<? super Map.Entry<K, V>>... p) {
         A.notNull(m, "m");
 
         if (isAlwaysFalse(p))
             return false;
         else if (isAlwaysTrue(p))
             return true;
-        else {
+        else if (!isEmpty(p))
             for (Map.Entry<K, V> e : m.entrySet())
-                if (!p.apply(e))
+                if (!isAll(e, p))
                     return false;
-        }
 
         return true;
     }
@@ -2858,16 +3648,20 @@ public class GridFunc {
      * @return Returns {@code true} if all given predicates evaluate to {@code true} for
      *      at least one element. Returns {@code false} otherwise.
      */
-    public static <V> boolean forAny(Iterable<? extends V> c, IgnitePredicate<? super V> p) {
+    public static <V> boolean forAny(Iterable<? extends V> c, @Nullable IgnitePredicate<? super V>... p) {
         A.notNull(c, "c");
 
-        if (isAlwaysFalse(p))
+        if (!c.iterator().hasNext())
+            return false;
+        else if (isEmpty(p))
+            return true;
+        else if (isAlwaysFalse(p))
             return false;
         else if (isAlwaysTrue(p))
             return true;
         else {
             for (V v : c)
-                if (p.apply(v))
+                if (isAll(v, p))
                     return true;
 
             return false;
@@ -2897,17 +3691,22 @@ public class GridFunc {
      *
      * @param c Input collection.
      * @param b Optional first folding pair element.
-     * @param fs Optional folding closure.
+     * @param fs Optional set of folding closures.
      * @param <D> Type of the input collection elements and type of the free variable for the closure.
      * @param <B> Type of the folding value and return type of the closure.
      * @return Value representing folded collection.
      */
     @Nullable public static <D, B> B fold(Iterable<? extends D> c, @Nullable B b,
-        IgniteBiClosure<? super D, ? super B, B> fs) {
+        @Nullable IgniteBiClosure<? super D, ? super B, B>... fs) {
         A.notNull(c, "c");
 
-        for (D e : c)
-            b = fs.apply(e, b);
+        if (!isEmpty(fs))
+            for (D e : c) {
+                assert fs != null;
+
+                for (IgniteBiClosure<? super D, ? super B, B> f : fs)
+                    b = f.apply(e, b);
+            }
 

<TRUNCATED>