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<title>org.apache.commons.pool (Apache Commons Object Pooling Package)</title>
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<h1 title="Package" class="title">Package org.apache.commons.pool</h1>
<div class="docSummary">
<div class="block">
Object pooling API.</div>
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<p>See: <a href="#package_description">Description</a></p>
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<table class="packageSummary" border="0" cellpadding="3" cellspacing="0" summary="Interface Summary table, listing interfaces, and an explanation">
<caption><span>Interface Summary</span><span class="tabEnd"> </span></caption>
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<th class="colFirst" scope="col">Interface</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../../../org/apache/commons/pool/KeyedObjectPool.html" title="interface in org.apache.commons.pool">KeyedObjectPool</a><K,V></td>
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<div class="block">A "keyed" pooling interface.</div>
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<td class="colFirst"><a href="../../../../org/apache/commons/pool/KeyedObjectPoolFactory.html" title="interface in org.apache.commons.pool">KeyedObjectPoolFactory</a><K,V></td>
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<div class="block">A factory for creating <a href="../../../../org/apache/commons/pool/KeyedObjectPool.html" title="interface in org.apache.commons.pool"><code>KeyedObjectPool</code></a>s.</div>
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<td class="colFirst"><a href="../../../../org/apache/commons/pool/KeyedPoolableObjectFactory.html" title="interface in org.apache.commons.pool">KeyedPoolableObjectFactory</a><K,V></td>
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<div class="block">An interface defining life-cycle methods for
instances to be served by a <a href="../../../../org/apache/commons/pool/KeyedObjectPool.html" title="interface in org.apache.commons.pool"><code>KeyedObjectPool</code></a>.</div>
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<td class="colFirst"><a href="../../../../org/apache/commons/pool/ObjectPool.html" title="interface in org.apache.commons.pool">ObjectPool</a><T></td>
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<div class="block">A pooling interface.</div>
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<td class="colFirst"><a href="../../../../org/apache/commons/pool/ObjectPoolFactory.html" title="interface in org.apache.commons.pool">ObjectPoolFactory</a><T></td>
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<div class="block">A factory interface for creating <a href="../../../../org/apache/commons/pool/ObjectPool.html" title="interface in org.apache.commons.pool"><code>ObjectPool</code></a>s.</div>
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<td class="colFirst"><a href="../../../../org/apache/commons/pool/PoolableObjectFactory.html" title="interface in org.apache.commons.pool">PoolableObjectFactory</a><T></td>
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<div class="block">An interface defining life-cycle methods for
instances to be served by an <a href="../../../../org/apache/commons/pool/ObjectPool.html" title="interface in org.apache.commons.pool"><code>ObjectPool</code></a>.</div>
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<th class="colFirst" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../../../org/apache/commons/pool/BaseKeyedObjectPool.html" title="class in org.apache.commons.pool">BaseKeyedObjectPool</a><K,V></td>
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<div class="block">A simple base implementation of <code>KeyedObjectPool</code>.</div>
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<td class="colFirst"><a href="../../../../org/apache/commons/pool/BaseKeyedPoolableObjectFactory.html" title="class in org.apache.commons.pool">BaseKeyedPoolableObjectFactory</a><K,V></td>
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<div class="block">A base implementation of <code>KeyedPoolableObjectFactory</code>.</div>
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<td class="colFirst"><a href="../../../../org/apache/commons/pool/BaseObjectPool.html" title="class in org.apache.commons.pool">BaseObjectPool</a><T></td>
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<div class="block">A simple base implementation of <a href="../../../../org/apache/commons/pool/ObjectPool.html" title="interface in org.apache.commons.pool"><code>ObjectPool</code></a>.</div>
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<td class="colFirst"><a href="../../../../org/apache/commons/pool/BasePoolableObjectFactory.html" title="class in org.apache.commons.pool">BasePoolableObjectFactory</a><T></td>
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<div class="block">A base implementation of <code>PoolableObjectFactory</code>.</div>
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<td class="colFirst"><a href="../../../../org/apache/commons/pool/PoolUtils.html" title="class in org.apache.commons.pool">PoolUtils</a></td>
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<div class="block">This class consists exclusively of static methods that operate on or return ObjectPool
or KeyedObjectPool related interfaces.</div>
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<h2 title="Package org.apache.commons.pool Description">Package org.apache.commons.pool Description</h2>
<div class="block"><p>
Object pooling API.
</p>
<p>
The <code>org.apache.commons.pool</code> package defines a simple
interface for a pool of object instances, and a handful of base
classes that may be useful when creating pool implementations.
</p>
<p>
The <code>pool</code> package itself doesn't define a specific object
pooling implementation, but rather a contract that implementations may
support in order to be fully interchangeable.
</p>
<p>
The <code>pool</code> package separates the way in which instances are
pooled from the way in which they are created, resulting in a pair of
interfaces:
</p>
<dl>
<dt><a href="../../../../org/apache/commons/pool/ObjectPool.html" title="interface in org.apache.commons.pool"><code>ObjectPool</code></a></dt>
<dd>
defines a simple object pooling interface, with methods for
borrowing instances from and returning them to the pool.
</dd>
<dt><a href="../../../../org/apache/commons/pool/PoolableObjectFactory.html" title="interface in org.apache.commons.pool"><code>PoolableObjectFactory</code></a></dt>
<dd>
defines lifecycle methods for object instances contained within a pool.
By associating a factory with a pool, the pool can create new object
instances as needed.
</dd>
</dl>
<p>
<a href="../../../../org/apache/commons/pool/ObjectPoolFactory.html" title="interface in org.apache.commons.pool"><code>ObjectPoolFactory</code></a>
defines a simple factory for <code>ObjectPool</code>s, which may be
useful for some applications.
</p>
<p>
The <code>pool</code> package also provides a keyed pool interface,
which pools instances of multiple types, accessed according to an
arbitrary key. See
<a href="../../../../org/apache/commons/pool/KeyedObjectPool.html" title="interface in org.apache.commons.pool"><code>KeyedObjectPool</code></a>,
<a href="../../../../org/apache/commons/pool/KeyedPoolableObjectFactory.html" title="interface in org.apache.commons.pool"><code>KeyedPoolableObjectFactory</code></a>,
and
<a href="../../../../org/apache/commons/pool/KeyedObjectPoolFactory.html" title="interface in org.apache.commons.pool"><code>KeyedObjectPoolFactory</code></a>.
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