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<div class="subTitle">org.apache.openjpa.kernel</div>
<h2 title="Class NoneLockManager" class="title">Class NoneLockManager</h2>
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<li><a href="../../../../org/apache/openjpa/kernel/AbstractLockManager.html" title="class in org.apache.openjpa.kernel">org.apache.openjpa.kernel.AbstractLockManager</a></li>
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<li>org.apache.openjpa.kernel.NoneLockManager</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../org/apache/openjpa/kernel/LockLevels.html" title="interface in org.apache.openjpa.kernel">LockLevels</a>, <a href="../../../../org/apache/openjpa/kernel/LockManager.html" title="interface in org.apache.openjpa.kernel">LockManager</a>, <a href="../../../../org/apache/openjpa/lib/util/Closeable.html" title="interface in org.apache.openjpa.lib.util">Closeable</a></dd>
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<pre>public class <span class="strong">NoneLockManager</span>
extends <a href="../../../../org/apache/openjpa/kernel/AbstractLockManager.html" title="class in org.apache.openjpa.kernel">AbstractLockManager</a></pre>
<div class="block">A lock manager that does not perform any locking.</div>
<dl><dt><span class="strong">Author:</span></dt>
<dd>Marc Prud'hommeaux</dd></dl>
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<h3>Fields inherited from class&nbsp;org.apache.openjpa.kernel.<a href="../../../../org/apache/openjpa/kernel/AbstractLockManager.html" title="class in org.apache.openjpa.kernel">AbstractLockManager</a></h3>
<code><a href="../../../../org/apache/openjpa/kernel/AbstractLockManager.html#ctx">ctx</a>, <a href="../../../../org/apache/openjpa/kernel/AbstractLockManager.html#log">log</a></code></li>
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<h3>Fields inherited from interface&nbsp;org.apache.openjpa.kernel.<a href="../../../../org/apache/openjpa/kernel/LockLevels.html" title="interface in org.apache.openjpa.kernel">LockLevels</a></h3>
<code><a href="../../../../org/apache/openjpa/kernel/LockLevels.html#LOCK_NONE">LOCK_NONE</a>, <a href="../../../../org/apache/openjpa/kernel/LockLevels.html#LOCK_READ">LOCK_READ</a>, <a href="../../../../org/apache/openjpa/kernel/LockLevels.html#LOCK_WRITE">LOCK_WRITE</a></code></li>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><strong><a href="../../../../org/apache/openjpa/kernel/NoneLockManager.html#NoneLockManager()">NoneLockManager</a></strong>()</code>&nbsp;</td>
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/kernel/NoneLockManager.html#getLockLevel(org.apache.openjpa.kernel.OpenJPAStateManager)">getLockLevel</a></strong>(<a href="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</a>&nbsp;sm)</code>
<div class="block">Return the lock level of the specified instance, or
<a href="../../../../org/apache/openjpa/kernel/LockLevels.html#LOCK_NONE"><code>LockLevels.LOCK_NONE</code></a> if not locked.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/kernel/NoneLockManager.html#lock(org.apache.openjpa.kernel.OpenJPAStateManager,%20int,%20int,%20java.lang.Object)">lock</a></strong>(<a href="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</a>&nbsp;sm,
int&nbsp;level,
int&nbsp;timeout,
<a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;context)</code>
<div class="block">Obtain a lock on the specified object.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/kernel/NoneLockManager.html#refreshLock(org.apache.openjpa.kernel.OpenJPAStateManager,%20int,%20int,%20java.lang.Object)">refreshLock</a></strong>(<a href="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</a>&nbsp;sm,
int&nbsp;level,
int&nbsp;timeout,
<a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;context)</code>
<div class="block">Perform the same function as previous lock method and has the option
to perform a version check after the lock function has completed.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/kernel/NoneLockManager.html#release(org.apache.openjpa.kernel.OpenJPAStateManager)">release</a></strong>(<a href="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</a>&nbsp;sm)</code>
<div class="block">Release the lock on the given object.</div>
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<h3>Methods inherited from class&nbsp;org.apache.openjpa.kernel.<a href="../../../../org/apache/openjpa/kernel/AbstractLockManager.html" title="class in org.apache.openjpa.kernel">AbstractLockManager</a></h3>
<code><a href="../../../../org/apache/openjpa/kernel/AbstractLockManager.html#beginTransaction()">beginTransaction</a>, <a href="../../../../org/apache/openjpa/kernel/AbstractLockManager.html#close()">close</a>, <a href="../../../../org/apache/openjpa/kernel/AbstractLockManager.html#endTransaction()">endTransaction</a>, <a href="../../../../org/apache/openjpa/kernel/AbstractLockManager.html#getContext()">getContext</a>, <a href="../../../../org/apache/openjpa/kernel/AbstractLockManager.html#lockAll(java.util.Collection,%20int,%20int,%20java.lang.Object)">lockAll</a>, <a href="../../../../org/apache/openjpa/kernel/AbstractLockManager.html#setContext(org.apache.openjpa.kernel.StoreContext)">setContext</a>, <a href="../../../../org/apache/openjpa/kernel/AbstractLockManager.html#skipRelationFieldLock()">skipRelationFieldLock</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://download.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://download.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://download.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>, <a href="http://download.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://download.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://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://download.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://download.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://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://download.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://download.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://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long,%20int)" title="class or interface in java.lang">wait</a></code></li>
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<h4>NoneLockManager</h4>
<pre>public&nbsp;NoneLockManager()</pre>
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<a name="lock(org.apache.openjpa.kernel.OpenJPAStateManager, int, int, java.lang.Object)">
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<h4>lock</h4>
<pre>public&nbsp;void&nbsp;lock(<a href="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</a>&nbsp;sm,
int&nbsp;level,
int&nbsp;timeout,
<a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;context)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../../org/apache/openjpa/kernel/LockManager.html#lock(org.apache.openjpa.kernel.OpenJPAStateManager,%20int,%20int,%20java.lang.Object)">LockManager</a></code></strong></div>
<div class="block">Obtain a lock on the specified object. This method may be called when
a user explicitly locks an object, and is also called automatically
for every object accessed during a transaction. The implementation
must track already-locked objects, and must be optimized to return
quickly when the given object does not need additional locking.
The lock manager might use the state manager's lock object for
bookkeeping information.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>sm</code> - the object to lock</dd><dd><code>level</code> - one of the lock constants defined in <a href="../../../../org/apache/openjpa/kernel/LockLevels.html" title="interface in org.apache.openjpa.kernel"><code>LockLevels</code></a>,
or a custom level</dd><dd><code>timeout</code> - the timeout in milliseconds, or a negative number for
no timeout</dd><dd><code>context</code> - the context information passed from the store manager
to the persistence context, if any; lock managers
specific to a certain back end may be able to take
advantage of this; others should ignore it</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html#setLock(java.lang.Object)"><code>OpenJPAStateManager.setLock(java.lang.Object)</code></a></dd></dl>
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<h4>refreshLock</h4>
<pre>public&nbsp;void&nbsp;refreshLock(<a href="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</a>&nbsp;sm,
int&nbsp;level,
int&nbsp;timeout,
<a href="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;context)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../../org/apache/openjpa/kernel/LockManager.html#refreshLock(org.apache.openjpa.kernel.OpenJPAStateManager,%20int,%20int,%20java.lang.Object)">LockManager</a></code></strong></div>
<div class="block">Perform the same function as previous lock method and has the option
to perform a version check after the lock function has completed.</div>
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<h4>release</h4>
<pre>public&nbsp;void&nbsp;release(<a href="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</a>&nbsp;sm)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../../org/apache/openjpa/kernel/LockManager.html#release(org.apache.openjpa.kernel.OpenJPAStateManager)">LockManager</a></code></strong></div>
<div class="block">Release the lock on the given object. This method will be called
automatically for each state manager with a lock object set on
transaction completion, just before the call to <a href="../../../../org/apache/openjpa/kernel/LockManager.html#endTransaction()"><code>LockManager.endTransaction()</code></a>.
The lock manager should null the state manager's lock object. Note
that some state manager may be garbage collected during a transaction;
thus lock managers cannot rely on this method being called for every
state manager.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html#setLock(java.lang.Object)"><code>OpenJPAStateManager.setLock(java.lang.Object)</code></a></dd></dl>
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<h4>getLockLevel</h4>
<pre>public&nbsp;int&nbsp;getLockLevel(<a href="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</a>&nbsp;sm)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../../org/apache/openjpa/kernel/LockManager.html#getLockLevel(org.apache.openjpa.kernel.OpenJPAStateManager)">LockManager</a></code></strong></div>
<div class="block">Return the lock level of the specified instance, or
<a href="../../../../org/apache/openjpa/kernel/LockLevels.html#LOCK_NONE"><code>LockLevels.LOCK_NONE</code></a> if not locked.</div>
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