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<div class="subTitle">org.apache.river.concurrent</div>
<h2 title="Class ReferenceCollection" class="title">Class ReferenceCollection&lt;T&gt;</h2>
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<ul class="inheritance">
<li><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
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<li><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true" title="class or interface in java.util">java.util.AbstractCollection</a>&lt;T&gt;</li>
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<ul class="inheritance">
<li>org.apache.river.concurrent.ReferenceCollection&lt;T&gt;</li>
</ul>
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<dl>
<dt>All Implemented Interfaces:</dt>
<dd><a href="http://docs.oracle.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;T&gt;, <a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;T&gt;</dd>
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<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../org/apache/river/concurrent/ReferencedQueue.html" title="class in org.apache.river.concurrent">ReferencedQueue</a>, <a href="../../../../org/apache/river/concurrent/ReferenceList.html" title="class in org.apache.river.concurrent">ReferenceList</a>, <a href="../../../../org/apache/river/concurrent/ReferenceSet.html" title="class in org.apache.river.concurrent">ReferenceSet</a></dd>
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<br>
<pre>class <span class="typeNameLabel">ReferenceCollection&lt;T&gt;</span>
extends <a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true" title="class or interface in java.util">AbstractCollection</a>&lt;T&gt;
implements <a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;T&gt;, <a href="http://docs.oracle.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a></pre>
<div class="block">A Collection of Reference Objects, the developer may chose any Collection
implementation to store the References, which is passed in a runtime.
The underlying Collection implementation governs the specific behaviour of this
Collection.
Synchronisation must be implemented by the underlying Collection and cannot
be performed externally to this class. The underlying Collection must
also be mutable. Objects will be removed automatically from the underlying
Collection when they are eligible for garbage collection.
Weak, Weak Identity, Soft, Soft Identity or Strong references may be used.
This Collection may be used as an Object pool cache or any other purpose
that requires unique memory handling.
For concurrent threads, it is recommended to encapsulate the underlying
collection in a multi read, single write collection for scalability.</div>
<dl>
<dt><span class="simpleTagLabel">Author:</span></dt>
<dd>Peter Firmstone.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../org/apache/river/concurrent/Ref.html" title="enum in org.apache.river.concurrent"><code>Ref</code></a>,
<code>ConcurrentCollections#multiReadCollection(java.util.Collection)</code></dd>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/river/concurrent/Referrer.html" title="interface in org.apache.river.concurrent">Referrer</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#col">col</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../../../../org/apache/river/concurrent/ReferenceQueuingFactory.html" title="interface in org.apache.river.concurrent">ReferenceQueuingFactory</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>,<a href="../../../../org/apache/river/concurrent/Referrer.html" title="interface in org.apache.river.concurrent">Referrer</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#rqf">rqf</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#serialVersionUID">serialVersionUID</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../../../../org/apache/river/concurrent/Ref.html" title="enum in org.apache.river.concurrent">Ref</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#type">type</a></span></code>&nbsp;</td>
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<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#ReferenceCollection-java.util.Collection-org.apache.river.concurrent.Ref-boolean-long-">ReferenceCollection</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/river/concurrent/Referrer.html" title="interface in org.apache.river.concurrent">Referrer</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;&gt;&nbsp;col,
<a href="../../../../org/apache/river/concurrent/Ref.html" title="enum in org.apache.river.concurrent">Ref</a>&nbsp;type,
boolean&nbsp;gcThread,
long&nbsp;gcCycle)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#ReferenceCollection-java.util.Collection-org.apache.river.concurrent.ReferenceQueuingFactory-org.apache.river.concurrent.Ref-">ReferenceCollection</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/river/concurrent/Referrer.html" title="interface in org.apache.river.concurrent">Referrer</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;&gt;&nbsp;col,
<a href="../../../../org/apache/river/concurrent/ReferenceQueuingFactory.html" title="interface in org.apache.river.concurrent">ReferenceQueuingFactory</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>,<a href="../../../../org/apache/river/concurrent/Referrer.html" title="interface in org.apache.river.concurrent">Referrer</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;&gt;&nbsp;rqf,
<a href="../../../../org/apache/river/concurrent/Ref.html" title="enum in org.apache.river.concurrent">Ref</a>&nbsp;type)</code>&nbsp;</td>
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<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#add-T-">add</a></span>(<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&nbsp;e)</code>&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#addAll-java.util.Collection-">addAll</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;? extends <a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;&nbsp;c)</code>&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#clear--">clear</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#contains-java.lang.Object-">contains</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;o)</code>&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#containsAll-java.util.Collection-">containsAll</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;?&gt;&nbsp;c)</code>&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#equals-java.lang.Object-">equals</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;o)</code>
<div class="block">Because equals and hashCode are not defined for collections, we
cannot guarantee consistent behaviour by implementing equals and
hashCode.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>(package private) <a href="../../../../org/apache/river/concurrent/Ref.html" title="enum in org.apache.river.concurrent">Ref</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#getRef--">getRef</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>(package private) <a href="../../../../org/apache/river/concurrent/ReferenceQueuingFactory.html" title="interface in org.apache.river.concurrent">ReferenceQueuingFactory</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>,<a href="../../../../org/apache/river/concurrent/Referrer.html" title="interface in org.apache.river.concurrent">Referrer</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#getRQF--">getRQF</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#hashCode--">hashCode</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#isEmpty--">isEmpty</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#iterator--">iterator</a></span>()</code>
<div class="block">This Iterator may return null values if garbage collection
runs during iteration.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>(package private) void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#processQueue--">processQueue</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#readObject-java.io.ObjectInputStream-">readObject</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/io/ObjectInputStream.html?is-external=true" title="class or interface in java.io">ObjectInputStream</a>&nbsp;stream)</code>&nbsp;</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#remove-java.lang.Object-">remove</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;o)</code>&nbsp;</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#size--">size</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#toString--">toString</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>(package private) <a href="../../../../org/apache/river/concurrent/Referrer.html" title="interface in org.apache.river.concurrent">Referrer</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#wrapObj-T-boolean-boolean-">wrapObj</a></span>(<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&nbsp;t,
boolean&nbsp;enqueue,
boolean&nbsp;temporary)</code>&nbsp;</td>
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<tr id="i17" class="rowColor">
<td class="colFirst"><code>(package private) <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/concurrent/ReferenceCollection.html#writeReplace--">writeReplace</a></span>()</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;java.util.<a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true" title="class or interface in java.util">AbstractCollection</a></h3>
<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#removeAll-java.util.Collection-" title="class or interface in java.util">removeAll</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#retainAll-java.util.Collection-" title="class or interface in java.util">retainAll</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#toArray--" title="class or interface in java.util">toArray</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#toArray-T:A-" title="class or interface in java.util">toArray</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h3>Methods inherited from interface&nbsp;java.util.<a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a></h3>
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<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Iterable.html?is-external=true#forEach-java.util.function.Consumer-" title="class or interface in java.lang">forEach</a></code></li>
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<pre>private final&nbsp;<a href="../../../../org/apache/river/concurrent/Ref.html" title="enum in org.apache.river.concurrent">Ref</a> type</pre>
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<pre><a href="../../../../org/apache/river/concurrent/ReferenceQueuingFactory.html" title="interface in org.apache.river.concurrent">ReferenceQueuingFactory</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>,<a href="../../../../org/apache/river/concurrent/Referrer.html" title="interface in org.apache.river.concurrent">Referrer</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;&gt;&nbsp;getRQF()</pre>
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<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#size--" title="class or interface in java.util">size</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true" title="class or interface in java.util">AbstractCollection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#isEmpty--" title="class or interface in java.util">isEmpty</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true" title="class or interface in java.util">AbstractCollection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
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<pre>public&nbsp;boolean&nbsp;contains(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;o)</pre>
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<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true#contains-java.lang.Object-" title="class or interface in java.util">contains</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#contains-java.lang.Object-" title="class or interface in java.util">contains</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true" title="class or interface in java.util">AbstractCollection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
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<pre>public&nbsp;<a href="http://docs.oracle.com/javase/6/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;&nbsp;iterator()</pre>
<div class="block">This Iterator may return null values if garbage collection
runs during iteration.
Always check for null values.</div>
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<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Iterable.html?is-external=true#iterator--" title="class or interface in java.lang">iterator</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true#iterator--" title="class or interface in java.util">iterator</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
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<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#iterator--" title="class or interface in java.util">iterator</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true" title="class or interface in java.util">AbstractCollection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>T - possibly null.</dd>
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<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true#add-E-" title="class or interface in java.util">add</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#add-E-" title="class or interface in java.util">add</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true" title="class or interface in java.util">AbstractCollection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
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<pre>public&nbsp;boolean&nbsp;remove(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;o)</pre>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#remove-java.lang.Object-" title="class or interface in java.util">remove</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true" title="class or interface in java.util">AbstractCollection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
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<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#containsAll-java.util.Collection-" title="class or interface in java.util">containsAll</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true" title="class or interface in java.util">AbstractCollection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#addAll-java.util.Collection-" title="class or interface in java.util">addAll</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true" title="class or interface in java.util">AbstractCollection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#clear--" title="class or interface in java.util">clear</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true" title="class or interface in java.util">AbstractCollection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
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<pre>public&nbsp;<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;toString()</pre>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true#toString--" title="class or interface in java.util">toString</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/AbstractCollection.html?is-external=true" title="class or interface in java.util">AbstractCollection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
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<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true#hashCode--" title="class or interface in java.util">hashCode</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd>
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<h4>equals</h4>
<pre>public&nbsp;boolean&nbsp;equals(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;o)</pre>
<div class="block">Because equals and hashCode are not defined for collections, we
cannot guarantee consistent behaviour by implementing equals and
hashCode. A collection could be a list, set, queue or deque.
So a List != Queue and a Set != list. therefore equals for collections is
not defined.
However since two collections may both also be Lists, while abstracted
from the client two lists may still be equal.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.util">equals</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/river/concurrent/ReferenceCollection.html" title="type parameter in ReferenceCollection">T</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="http://docs.oracle.com/javase/6/docs/api/java/util/Collection.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.util"><code>Collection.equals(java.lang.Object)</code></a></dd>
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<h4>writeReplace</h4>
<pre>final&nbsp;<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;writeReplace()
throws <a href="http://docs.oracle.com/javase/6/docs/api/java/io/ObjectStreamException.html?is-external=true" title="class or interface in java.io">ObjectStreamException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/io/ObjectStreamException.html?is-external=true" title="class or interface in java.io">ObjectStreamException</a></code></dd>
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<h4>readObject</h4>
<pre>private&nbsp;void&nbsp;readObject(<a href="http://docs.oracle.com/javase/6/docs/api/java/io/ObjectInputStream.html?is-external=true" title="class or interface in java.io">ObjectInputStream</a>&nbsp;stream)
throws <a href="http://docs.oracle.com/javase/6/docs/api/java/io/InvalidObjectException.html?is-external=true" title="class or interface in java.io">InvalidObjectException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/io/InvalidObjectException.html?is-external=true" title="class or interface in java.io">InvalidObjectException</a></code></dd>
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