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Posted to commits@myfaces.apache.org by ma...@apache.org on 2008/08/20 15:09:14 UTC
svn commit: r687312 - in
/myfaces/trinidad/trunk_1.2.x/trinidad-api/src/main/java/org/apache/myfaces/trinidad/component:
CompositeIterator.java UIXComponentBase.java
Author: matzew
Date: Wed Aug 20 06:09:14 2008
New Revision: 687312
URL: http://svn.apache.org/viewvc?rev=687312&view=rev
Log:
TRINIDAD-1164 - getFacetsAndChildren from UIXComponentBase allocates a lot of memory
Thanks to Blake Sullivan for his patch
Added:
myfaces/trinidad/trunk_1.2.x/trinidad-api/src/main/java/org/apache/myfaces/trinidad/component/CompositeIterator.java
Modified:
myfaces/trinidad/trunk_1.2.x/trinidad-api/src/main/java/org/apache/myfaces/trinidad/component/UIXComponentBase.java
Added: myfaces/trinidad/trunk_1.2.x/trinidad-api/src/main/java/org/apache/myfaces/trinidad/component/CompositeIterator.java
URL: http://svn.apache.org/viewvc/myfaces/trinidad/trunk_1.2.x/trinidad-api/src/main/java/org/apache/myfaces/trinidad/component/CompositeIterator.java?rev=687312&view=auto
==============================================================================
--- myfaces/trinidad/trunk_1.2.x/trinidad-api/src/main/java/org/apache/myfaces/trinidad/component/CompositeIterator.java (added)
+++ myfaces/trinidad/trunk_1.2.x/trinidad-api/src/main/java/org/apache/myfaces/trinidad/component/CompositeIterator.java Wed Aug 20 06:09:14 2008
@@ -0,0 +1,93 @@
+/*
+ * 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.myfaces.trinidad.component;
+
+import java.util.Iterator;
+
+/** not thread safe, though it could be as thread-safe as the underlying Iterators at a slight cost to performance and size */
+public final class CompositeIterator<T> implements Iterator<T>
+{
+ public CompositeIterator(Iterator<T> firstIterator, Iterator<T> secondIterator)
+ {
+ if (firstIterator == null)
+ throw new NullPointerException();
+
+ if (secondIterator == null)
+ throw new NullPointerException();
+
+ // determine whether we have another element aggressively
+ _hasNext = firstIterator.hasNext();
+
+ if (_hasNext)
+ {
+ _firstIterator = firstIterator;
+ _secondIterator = secondIterator;
+ }
+ else
+ {
+ // first iterator is empty so shift up the second iterator
+ _firstIterator = secondIterator;
+ _secondIterator = null;
+ _hasNext = secondIterator.hasNext();
+ }
+ }
+
+ public boolean hasNext()
+ {
+ // return cached value
+ return _hasNext;
+ }
+
+ public T next()
+ {
+ // remove is only valid after next(), so assign it here.
+ // This also deals with issue where next() is called on the
+ // last element of the firstIterator and then remove is called
+ // this way the removeIterator correctly lags shifting from the
+ // old _firstIterator to the _secondIterator
+ _removeIterator = _firstIterator;
+
+ T nextValue = _firstIterator.next();
+
+ _hasNext = _firstIterator.hasNext();
+
+ if (!_hasNext && (_secondIterator != null))
+ {
+ // firsIterator is done, so shift up the secondIterator
+ _firstIterator = _secondIterator;
+ _secondIterator = null;
+ _hasNext = _firstIterator.hasNext();
+ }
+
+ return nextValue;
+ }
+
+ public void remove()
+ {
+ if (_removeIterator == null)
+ throw new IllegalStateException();
+
+ _removeIterator.remove();
+ }
+
+ private Iterator<T> _firstIterator;
+ private Iterator<T> _secondIterator;
+ private Iterator<T> _removeIterator;
+ private boolean _hasNext;
+}
Modified: myfaces/trinidad/trunk_1.2.x/trinidad-api/src/main/java/org/apache/myfaces/trinidad/component/UIXComponentBase.java
URL: http://svn.apache.org/viewvc/myfaces/trinidad/trunk_1.2.x/trinidad-api/src/main/java/org/apache/myfaces/trinidad/component/UIXComponentBase.java?rev=687312&r1=687311&r2=687312&view=diff
==============================================================================
--- myfaces/trinidad/trunk_1.2.x/trinidad-api/src/main/java/org/apache/myfaces/trinidad/component/UIXComponentBase.java (original)
+++ myfaces/trinidad/trunk_1.2.x/trinidad-api/src/main/java/org/apache/myfaces/trinidad/component/UIXComponentBase.java Wed Aug 20 06:09:14 2008
@@ -21,7 +21,6 @@
import java.io.InputStream;
import java.io.IOException;
import java.net.URL;
-import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
@@ -615,8 +614,6 @@
return _facets.keySet().iterator();
}
-
- // TODO: Optimize to a compound iterator
@Override
public Iterator<UIComponent> getFacetsAndChildren()
{
@@ -633,25 +630,10 @@
if (_children == null)
return _facets.values().iterator();
}
-
- ArrayList<UIComponent> childrenAndFacets = new ArrayList<UIComponent>();
- for(UIComponent facet : _facets.values())
- {
- childrenAndFacets.add(facet);
- }
-
- for(UIComponent child : _children)
- {
- childrenAndFacets.add(child);
- }
-
- if (childrenAndFacets.isEmpty())
- return _EMPTY_UICOMPONENT_ITERATOR;
-
- return childrenAndFacets.iterator();
+
+ return new CompositeIterator<UIComponent>(_children.iterator(), _facets.values().iterator());
}
-
// ------------------------------------------- Event processing methods
@Override