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Posted to commits@jena.apache.org by an...@apache.org on 2011/06/17 19:01:38 UTC
svn commit: r1136937 - in /incubator/jena/Jena2/ARQ/trunk:
src-dev/dev/DevARQ.java src/org/openjena/atlas/lib/Cache.java
src/org/openjena/atlas/lib/CacheFactory.java
src/org/openjena/atlas/lib/cache/Cache0.java
Author: andy
Date: Fri Jun 17 17:01:38 2011
New Revision: 1136937
URL: http://svn.apache.org/viewvc?rev=1136937&view=rev
Log:
Add a zero-slot cache. Useful to avoid "if null" tests.
Added:
incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/cache/Cache0.java (with props)
Modified:
incubator/jena/Jena2/ARQ/trunk/src-dev/dev/DevARQ.java
incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/Cache.java
incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/CacheFactory.java
Modified: incubator/jena/Jena2/ARQ/trunk/src-dev/dev/DevARQ.java
URL: http://svn.apache.org/viewvc/incubator/jena/Jena2/ARQ/trunk/src-dev/dev/DevARQ.java?rev=1136937&r1=1136936&r2=1136937&view=diff
==============================================================================
--- incubator/jena/Jena2/ARQ/trunk/src-dev/dev/DevARQ.java (original)
+++ incubator/jena/Jena2/ARQ/trunk/src-dev/dev/DevARQ.java Fri Jun 17 17:01:38 2011
@@ -1,7 +1,11 @@
package dev ;
+import org.openjena.atlas.event.EventManager ;
+
public class DevARQ
{
+ // Langbase - calls EventManager.send... but Turtle rpefixes done after (read is not finished)
+ // JenaReaderRIOT to do the event?
// One token call to Tokenizer.parse -- Replace SSE.parseNode stuff.
// Split pom into:
Modified: incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/Cache.java
URL: http://svn.apache.org/viewvc/incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/Cache.java?rev=1136937&r1=1136936&r2=1136937&view=diff
==============================================================================
--- incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/Cache.java (original)
+++ incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/Cache.java Fri Jun 17 17:01:38 2011
@@ -22,7 +22,7 @@ public interface Cache<Key, Value>
/** Insert into from cache and return old value (or null if none) */
public Value put(Key key, Value thing) ;
- /** Remove from cache - return true if key referenecd an entry */
+ /** Remove from cache - return true if key referenced an entry */
public boolean remove(Key key) ;
/** Iterate over all keys. Iteratering over the keys requires the caller be thread-safe. */
Modified: incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/CacheFactory.java
URL: http://svn.apache.org/viewvc/incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/CacheFactory.java?rev=1136937&r1=1136936&r2=1136937&view=diff
==============================================================================
--- incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/CacheFactory.java (original)
+++ incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/CacheFactory.java Fri Jun 17 17:01:38 2011
@@ -38,6 +38,12 @@ public class CacheFactory
return createCacheWithGetter(cache, getter) ;
}
+ /** Create a null cache */
+ public static <Key, Value> Cache<Key, Value> createNullCache()
+ {
+ return new Cache0<Key, Value>() ;
+ }
+
/** Create a cache which has unbounded space */
public static <Key, Value> Cache<Key, Value> createCacheUnbounded()
{
Added: incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/cache/Cache0.java
URL: http://svn.apache.org/viewvc/incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/cache/Cache0.java?rev=1136937&view=auto
==============================================================================
--- incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/cache/Cache0.java (added)
+++ incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/cache/Cache0.java Fri Jun 17 17:01:38 2011
@@ -0,0 +1,86 @@
+/*
+ * (c) Copyright 2011 Epimorphics Ltd.
+ * All rights reserved.
+ * [See end of file]
+ */
+
+package org.openjena.atlas.lib.cache;
+
+import java.util.Iterator ;
+
+import org.openjena.atlas.iterator.Iter ;
+import org.openjena.atlas.lib.ActionKeyValue ;
+import org.openjena.atlas.lib.Cache ;
+
+/** A cache that keep nothing */
+public class Cache0<K, V> implements Cache<K,V>
+{
+ public boolean containsKey(K key)
+ {
+ return false ;
+ }
+
+ public V get(K key)
+ {
+ return null ;
+ }
+
+ public V put(K key, V thing)
+ {
+ return null ;
+ }
+
+ public boolean remove(K key)
+ {
+ return false ;
+ }
+
+ public Iterator<K> keys()
+ {
+ return Iter.nullIterator() ;
+ }
+
+ public boolean isEmpty()
+ {
+ return true ;
+ }
+
+ public void clear()
+ {}
+
+ public long size()
+ {
+ return 0 ;
+ }
+
+ public void setDropHandler(ActionKeyValue<K, V> dropHandler)
+ {}
+
+}
+
+/*
+ * (c) Copyright 2011 Epimorphics Ltd.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
\ No newline at end of file
Propchange: incubator/jena/Jena2/ARQ/trunk/src/org/openjena/atlas/lib/cache/Cache0.java
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