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<div class="subTitle">org.eclipse.persistence.descriptors</div>
<h2 title="Class VersionLockingPolicy" class="title">Class VersionLockingPolicy</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
<li>
<ul class="inheritance">
<li>org.eclipse.persistence.descriptors.VersionLockingPolicy</li>
</ul>
</li>
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<div class="description">
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<dl>
<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Cloneable.html?is-external=true" title="class or interface in java.lang">Cloneable</a>, org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../org/eclipse/persistence/descriptors/TimestampLockingPolicy.html" title="class in org.eclipse.persistence.descriptors">TimestampLockingPolicy</a></dd>
</dl>
<hr>
<br>
<pre>public class <span class="typeNameLabel">VersionLockingPolicy</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
implements org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a></pre>
<div class="block"><p><b>Purpose</b>: Used to allow a single version number to be used for optimistic locking.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../serialized-form.html#org.eclipse.persistence.descriptors.VersionLockingPolicy">Serialized Form</a></dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>TOPLink/Java 2.0</dd>
</dl>
</li>
</ul>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</h3>
<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy.LockOnChange</code></li>
</ul>
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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>protected <a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#cachedExpression">cachedExpression</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../org/eclipse/persistence/descriptors/ClassDescriptor.html" title="class in org.eclipse.persistence.descriptors">ClassDescriptor</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#descriptor">descriptor</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#IN_CACHE">IN_CACHE</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#IN_OBJECT">IN_OBJECT</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#isCascaded">isCascaded</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../org/eclipse/persistence/mappings/foundation/AbstractDirectMapping.html" title="class in org.eclipse.persistence.mappings.foundation">AbstractDirectMapping</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#lockMapping">lockMapping</a></span></code>
<div class="block">PERF: Cache the lock mapping if mapped with a direct mapping.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy.LockOnChange</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#lockOnChangeMode">lockOnChangeMode</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#lockValueStored">lockValueStored</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected org.eclipse.persistence.internal.helper.DatabaseField</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#writeLockField">writeLockField</a></span></code>&nbsp;</td>
</tr>
</table>
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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/eclipse/persistence/descriptors/VersionLockingPolicy.html#VersionLockingPolicy--">VersionLockingPolicy</a></span>()</code>
<div class="block">PUBLIC:
Create a new VersionLockingPolicy.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#VersionLockingPolicy-org.eclipse.persistence.internal.helper.DatabaseField-">VersionLockingPolicy</a></span>(org.eclipse.persistence.internal.helper.DatabaseField&nbsp;field)</code>
<div class="block">PUBLIC:
Create a new VersionLockingPolicy.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#VersionLockingPolicy-java.lang.String-">VersionLockingPolicy</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;fieldName)</code>
<div class="block">PUBLIC:
Create a new VersionLockingPolicy.</div>
</td>
</tr>
</table>
</li>
</ul>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<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>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#addLockFieldsToUpdateRow-org.eclipse.persistence.internal.sessions.AbstractRecord-org.eclipse.persistence.internal.sessions.AbstractSession-">addLockFieldsToUpdateRow</a></span>(org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;databaseRow,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</code>
<div class="block">INTERNAL:
Add update fields for template row.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#addLockValuesToTranslationRow-org.eclipse.persistence.queries.ObjectLevelModifyQuery-">addLockValuesToTranslationRow</a></span>(<a href="../../../../org/eclipse/persistence/queries/ObjectLevelModifyQuery.html" title="class in org.eclipse.persistence.queries">ObjectLevelModifyQuery</a>&nbsp;query)</code>
<div class="block">INTERNAL:
This method adds the lock value to the translation row of the
passed in query.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#buildDeleteExpression-org.eclipse.persistence.internal.helper.DatabaseTable-org.eclipse.persistence.expressions.Expression-org.eclipse.persistence.internal.sessions.AbstractRecord-">buildDeleteExpression</a></span>(org.eclipse.persistence.internal.helper.DatabaseTable&nbsp;table,
<a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a>&nbsp;mainExpression,
org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;row)</code>
<div class="block">INTERNAL:
When given an expression, this method will return a new expression with
the optimistic locking values included.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#buildExpression--">buildExpression</a></span>()</code>
<div class="block">INTERNAL:
Returns an expression that will be used for both the update and
delete where clause</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#buildUpdateExpression-org.eclipse.persistence.internal.helper.DatabaseTable-org.eclipse.persistence.expressions.Expression-org.eclipse.persistence.internal.sessions.AbstractRecord-org.eclipse.persistence.internal.sessions.AbstractRecord-">buildUpdateExpression</a></span>(org.eclipse.persistence.internal.helper.DatabaseTable&nbsp;table,
<a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a>&nbsp;mainExpression,
org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;row,
org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;row2)</code>
<div class="block">INTERNAL:
When given an expression, this method will return a new expression
with the optimistic locking values included.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/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/eclipse/persistence/descriptors/VersionLockingPolicy.html#clone--">clone</a></span>()</code>
<div class="block">INTERNAL:
Clone the policy</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#compareWriteLockValues-java.lang.Object-java.lang.Object-">compareWriteLockValues</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;value1,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;value2)</code>
<div class="block">INTERNAL:
This method compares two writeLockValues.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/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/eclipse/persistence/descriptors/VersionLockingPolicy.html#getBaseValue--">getBaseValue</a></span>()</code>
<div class="block">INTERNAL:
This is the base value that is older than all other values, it is used in the place of
null in some situations.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#getDefaultLockingFieldType--">getDefaultLockingFieldType</a></span>()</code>
<div class="block">INTERNAL:
Return the default version locking filed java type, default is BigDecimal</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../org/eclipse/persistence/descriptors/ClassDescriptor.html" title="class in org.eclipse.persistence.descriptors">ClassDescriptor</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#getDescriptor--">getDescriptor</a></span>()</code>
<div class="block">INTERNAL:</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/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/eclipse/persistence/descriptors/VersionLockingPolicy.html#getInitialWriteValue-org.eclipse.persistence.internal.sessions.AbstractSession-">getInitialWriteValue</a></span>(org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</code>
<div class="block">INTERNAL:
returns the initial locking value</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy.LockOnChange</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#getLockOnChangeMode--">getLockOnChangeMode</a></span>()</code>
<div class="block">ADVANCED:
returns the LockOnChange mode for this policy.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/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/eclipse/persistence/descriptors/VersionLockingPolicy.html#getNewLockValue-org.eclipse.persistence.queries.ModifyQuery-">getNewLockValue</a></span>(<a href="../../../../org/eclipse/persistence/queries/ModifyQuery.html" title="class in org.eclipse.persistence.queries">ModifyQuery</a>&nbsp;query)</code>
<div class="block">INTERNAL:
This method gets the write lock value from either the cache or
the object stored in the query.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Vector.html?is-external=true" title="class or interface in java.util">Vector</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#getUnmappedFields--">getUnmappedFields</a></span>()</code>
<div class="block">INTERNAL:
This method returns any of the fields that are not mapped in
the object.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/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/eclipse/persistence/descriptors/VersionLockingPolicy.html#getValueToPutInCache-org.eclipse.persistence.internal.sessions.AbstractRecord-org.eclipse.persistence.internal.sessions.AbstractSession-">getValueToPutInCache</a></span>(org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;row,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</code>
<div class="block">INTERNAL:
Return the value that should be stored in the identity map.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#getVersionDifference-java.lang.Object-java.lang.Object-java.lang.Object-org.eclipse.persistence.internal.sessions.AbstractSession-">getVersionDifference</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;currentValue,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;primaryKeys,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</code>
<div class="block">PUBLIC:
Return the number of versions different between these objects.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code><a href="../../../../org/eclipse/persistence/mappings/foundation/AbstractDirectMapping.html" title="class in org.eclipse.persistence.mappings.foundation">AbstractDirectMapping</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#getVersionMapping--">getVersionMapping</a></span>()</code>
<div class="block">INTERNAL:
Returns the mapping that will be used to access the version value from an object.</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>org.eclipse.persistence.internal.helper.DatabaseField</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#getWriteLockField--">getWriteLockField</a></span>()</code>
<div class="block">INTERNAL:
Return the write lock field.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/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/eclipse/persistence/descriptors/VersionLockingPolicy.html#getWriteLockFieldName--">getWriteLockFieldName</a></span>()</code>
<div class="block">PUBLIC:
Return the field name of the field that stores the write lock value.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#getWriteLockUpdateExpression-org.eclipse.persistence.expressions.ExpressionBuilder-org.eclipse.persistence.internal.sessions.AbstractSession-">getWriteLockUpdateExpression</a></span>(<a href="../../../../org/eclipse/persistence/expressions/ExpressionBuilder.html" title="class in org.eclipse.persistence.expressions">ExpressionBuilder</a>&nbsp;builder,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</code>
<div class="block">INTERNAL:
Retrun an expression that updates the write lock</div>
</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/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/eclipse/persistence/descriptors/VersionLockingPolicy.html#getWriteLockValue-java.lang.Object-java.lang.Object-org.eclipse.persistence.internal.sessions.AbstractSession-">getWriteLockValue</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;primaryKey,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</code>
<div class="block">INTERNAL:
This method will return the optimistic lock value for the object</div>
</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Number.html?is-external=true" title="class or interface in java.lang">Number</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#incrementWriteLockValue-java.lang.Number-">incrementWriteLockValue</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Number.html?is-external=true" title="class or interface in java.lang">Number</a>&nbsp;numberValue)</code>
<div class="block">INTERNAL:
Adds 1 to the value passed in.</div>
</td>
</tr>
<tr id="i22" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#initialize-org.eclipse.persistence.internal.sessions.AbstractSession-">initialize</a></span>(org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</code>
<div class="block">INTERNAL:
It is responsible for initializing the policy;</div>
</td>
</tr>
<tr id="i23" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#initializeProperties--">initializeProperties</a></span>()</code>
<div class="block">INTERNAL:
It is responsible for initializing the policy properties;</div>
</td>
</tr>
<tr id="i24" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#isCascaded--">isCascaded</a></span>()</code>
<div class="block">PUBLIC:
Return true if the policy uses cascade locking.</div>
</td>
</tr>
<tr id="i25" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#isNewerVersion-org.eclipse.persistence.internal.sessions.AbstractRecord-java.lang.Object-java.lang.Object-org.eclipse.persistence.internal.sessions.AbstractSession-">isNewerVersion</a></span>(org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;databaseRow,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;primaryKey,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</code>
<div class="block">INTERNAL:
Compares the value from the row and from the object (or cache).</div>
</td>
</tr>
<tr id="i26" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#isNewerVersion-java.lang.Object-java.lang.Object-">isNewerVersion</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;firstLockFieldValue,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;secondWriteLockFieldValue)</code>
<div class="block">INTERNAL:
Compares two values.</div>
</td>
</tr>
<tr id="i27" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#isNewerVersion-java.lang.Object-java.lang.Object-java.lang.Object-org.eclipse.persistence.internal.sessions.AbstractSession-">isNewerVersion</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;currentValue,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;primaryKey,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</code>
<div class="block">INTERNAL:
Compares the value with the value from the object (or cache).</div>
</td>
</tr>
<tr id="i28" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#isStoredInCache--">isStoredInCache</a></span>()</code>
<div class="block">PUBLIC:
Return true if the lock value is stored in the cache.</div>
</td>
</tr>
<tr id="i29" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#isStoredInObject--">isStoredInObject</a></span>()</code>
<div class="block">PUBLIC:
Return true if the lock value is stored in the object.</div>
</td>
</tr>
<tr id="i30" class="altColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/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/eclipse/persistence/descriptors/VersionLockingPolicy.html#lockValueFromObject-java.lang.Object-">lockValueFromObject</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject)</code>
<div class="block">INTERNAL:
Retrieves the lock value from the object.</div>
</td>
</tr>
<tr id="i31" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#mergeIntoParentCache-org.eclipse.persistence.internal.identitymaps.CacheKey-org.eclipse.persistence.internal.identitymaps.CacheKey-">mergeIntoParentCache</a></span>(org.eclipse.persistence.internal.identitymaps.CacheKey&nbsp;unitOfWorkCacheKey,
org.eclipse.persistence.internal.identitymaps.CacheKey&nbsp;parentSessionCacheKey)</code>
<div class="block">INTERNAL:
This method should merge changes from the parent into the child.</div>
</td>
</tr>
<tr id="i32" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#mergeIntoParentCache-org.eclipse.persistence.internal.sessions.UnitOfWorkImpl-java.lang.Object-java.lang.Object-">mergeIntoParentCache</a></span>(org.eclipse.persistence.internal.sessions.UnitOfWorkImpl&nbsp;uow,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;primaryKey,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;object)</code>
<div class="block">INTERNAL:
Only applicable when the value is stored in the cache.</div>
</td>
</tr>
<tr id="i33" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#setDescriptor-org.eclipse.persistence.descriptors.ClassDescriptor-">setDescriptor</a></span>(<a href="../../../../org/eclipse/persistence/descriptors/ClassDescriptor.html" title="class in org.eclipse.persistence.descriptors">ClassDescriptor</a>&nbsp;descriptor)</code>
<div class="block">INTERNAL:</div>
</td>
</tr>
<tr id="i34" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#setIsCascaded-boolean-">setIsCascaded</a></span>(boolean&nbsp;isCascaded)</code>
<div class="block">PUBLIC:
Set whether to use cascade locking on the policy.</div>
</td>
</tr>
<tr id="i35" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#setIsStoredInCache-boolean-">setIsStoredInCache</a></span>(boolean&nbsp;isStoredInCache)</code>
<div class="block">PUBLIC:
Set whether to store the lock in the cache or in the object.</div>
</td>
</tr>
<tr id="i36" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#setLockOnChangeMode-org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy.LockOnChange-">setLockOnChangeMode</a></span>(org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy.LockOnChange&nbsp;lockOnChangeMode)</code>
<div class="block">ADVANCED:
Sets the LockOnChange mode for this policy.</div>
</td>
</tr>
<tr id="i37" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#setupWriteFieldsForInsert-org.eclipse.persistence.queries.ObjectLevelModifyQuery-">setupWriteFieldsForInsert</a></span>(<a href="../../../../org/eclipse/persistence/queries/ObjectLevelModifyQuery.html" title="class in org.eclipse.persistence.queries">ObjectLevelModifyQuery</a>&nbsp;query)</code>
<div class="block">INTERNAL:
This method must be included in any locking policy.</div>
</td>
</tr>
<tr id="i38" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#setWriteLockField-org.eclipse.persistence.internal.helper.DatabaseField-">setWriteLockField</a></span>(org.eclipse.persistence.internal.helper.DatabaseField&nbsp;writeLockField)</code>
<div class="block">ADVANCED:
Set the write lock field.</div>
</td>
</tr>
<tr id="i39" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#setWriteLockFieldName-java.lang.String-">setWriteLockFieldName</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;writeLockFieldName)</code>
<div class="block">PUBLIC:
Set the write lock field name.</div>
</td>
</tr>
<tr id="i40" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#shouldUpdateVersionOnMappingChange--">shouldUpdateVersionOnMappingChange</a></span>()</code>
<div class="block">INTERNAL:
Returns true if the policy has been set to set an optimistic read lock when any mapping changes.</div>
</td>
</tr>
<tr id="i41" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#shouldUpdateVersionOnOwnedMappingChange--">shouldUpdateVersionOnOwnedMappingChange</a></span>()</code>
<div class="block">INTERNAL:
Returns true if the policy has been set to set an optimistic read lock when a owning mapping changes.</div>
</td>
</tr>
<tr id="i42" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#storeInCache--">storeInCache</a></span>()</code>
<div class="block">PUBLIC:
Configure the version lock value to be stored in the cache.</div>
</td>
</tr>
<tr id="i43" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#storeInObject--">storeInObject</a></span>()</code>
<div class="block">PUBLIC:
Configure the version lock value to be stored in the object.</div>
</td>
</tr>
<tr id="i44" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#supportsWriteLockValuesComparison--">supportsWriteLockValuesComparison</a></span>()</code>
<div class="block">INTERNAL:
Indicates that compareWriteLockValues method is supported by the policy.</div>
</td>
</tr>
<tr id="i45" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#updateObjectWithWriteValue-org.eclipse.persistence.queries.ObjectLevelModifyQuery-java.lang.Object-">updateObjectWithWriteValue</a></span>(<a href="../../../../org/eclipse/persistence/queries/ObjectLevelModifyQuery.html" title="class in org.eclipse.persistence.queries">ObjectLevelModifyQuery</a>&nbsp;query,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;lockValue)</code>&nbsp;</td>
</tr>
<tr id="i46" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#updateRowAndObjectForUpdate-org.eclipse.persistence.queries.ObjectLevelModifyQuery-java.lang.Object-">updateRowAndObjectForUpdate</a></span>(<a href="../../../../org/eclipse/persistence/queries/ObjectLevelModifyQuery.html" title="class in org.eclipse.persistence.queries">ObjectLevelModifyQuery</a>&nbsp;query,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject)</code>
<div class="block">INTERNAL:
This method updates the modify row, and the domain object
with the new lock value.</div>
</td>
</tr>
<tr id="i47" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#updateWriteLockValueForWrite-org.eclipse.persistence.queries.ObjectLevelModifyQuery-java.lang.Object-">updateWriteLockValueForWrite</a></span>(<a href="../../../../org/eclipse/persistence/queries/ObjectLevelModifyQuery.html" title="class in org.eclipse.persistence.queries">ObjectLevelModifyQuery</a>&nbsp;query,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;lockValue)</code>
<div class="block">INTERNAL:
Update the row, object and change set with the version value.</div>
</td>
</tr>
<tr id="i48" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#validateDelete-int-java.lang.Object-org.eclipse.persistence.queries.DeleteObjectQuery-">validateDelete</a></span>(int&nbsp;rowCount,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;object,
<a href="../../../../org/eclipse/persistence/queries/DeleteObjectQuery.html" title="class in org.eclipse.persistence.queries">DeleteObjectQuery</a>&nbsp;query)</code>
<div class="block">INTERNAL:
Check the row count for lock failure.</div>
</td>
</tr>
<tr id="i49" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#validateUpdate-int-java.lang.Object-org.eclipse.persistence.queries.WriteObjectQuery-">validateUpdate</a></span>(int&nbsp;rowCount,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;object,
<a href="../../../../org/eclipse/persistence/queries/WriteObjectQuery.html" title="class in org.eclipse.persistence.queries">WriteObjectQuery</a>&nbsp;query)</code>
<div class="block">INTERNAL:
Check the row count for lock failure.</div>
</td>
</tr>
<tr id="i50" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/descriptors/VersionLockingPolicy.html#writeLockValueIntoRow-org.eclipse.persistence.queries.ObjectLevelModifyQuery-java.lang.Object-">writeLockValueIntoRow</a></span>(<a href="../../../../org/eclipse/persistence/queries/ObjectLevelModifyQuery.html" title="class in org.eclipse.persistence.queries">ObjectLevelModifyQuery</a>&nbsp;query,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject)</code>
<div class="block">INTERNAL:
This method updates the modify row with the old lock value.</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/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>Field Detail</h3>
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<h4>writeLockField</h4>
<pre>protected&nbsp;org.eclipse.persistence.internal.helper.DatabaseField writeLockField</pre>
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<pre>protected&nbsp;boolean isCascaded</pre>
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<pre>protected&nbsp;int lockValueStored</pre>
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<h4>descriptor</h4>
<pre>protected&nbsp;<a href="../../../../org/eclipse/persistence/descriptors/ClassDescriptor.html" title="class in org.eclipse.persistence.descriptors">ClassDescriptor</a> descriptor</pre>
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<pre>protected transient&nbsp;<a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a> cachedExpression</pre>
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<pre>public static final&nbsp;int IN_CACHE</pre>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../constant-values.html#org.eclipse.persistence.descriptors.VersionLockingPolicy.IN_CACHE">Constant Field Values</a></dd>
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<pre>public static final&nbsp;int IN_OBJECT</pre>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../constant-values.html#org.eclipse.persistence.descriptors.VersionLockingPolicy.IN_OBJECT">Constant Field Values</a></dd>
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<pre>protected&nbsp;<a href="../../../../org/eclipse/persistence/mappings/foundation/AbstractDirectMapping.html" title="class in org.eclipse.persistence.mappings.foundation">AbstractDirectMapping</a> lockMapping</pre>
<div class="block">PERF: Cache the lock mapping if mapped with a direct mapping.</div>
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<pre>protected&nbsp;org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy.LockOnChange lockOnChangeMode</pre>
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<pre>public&nbsp;VersionLockingPolicy()</pre>
<div class="block">PUBLIC:
Create a new VersionLockingPolicy. Defaults to
storing the lock value in the cache.</div>
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<pre>public&nbsp;VersionLockingPolicy(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;fieldName)</pre>
<div class="block">PUBLIC:
Create a new VersionLockingPolicy. Defaults to
storing the lock value in the cache.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fieldName</code> - specifies the field name for the write
lock field.</dd>
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<pre>public&nbsp;VersionLockingPolicy(org.eclipse.persistence.internal.helper.DatabaseField&nbsp;field)</pre>
<div class="block">PUBLIC:
Create a new VersionLockingPolicy. Defaults to
storing the lock value in the cache.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>field</code> - the write lock field.</dd>
</dl>
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<pre>public&nbsp;void&nbsp;addLockFieldsToUpdateRow(org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;databaseRow,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</pre>
<div class="block">INTERNAL:
Add update fields for template row.
These are any unmapped fields required to write in an update.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>addLockFieldsToUpdateRow</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
</dl>
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<pre>public&nbsp;void&nbsp;addLockValuesToTranslationRow(<a href="../../../../org/eclipse/persistence/queries/ObjectLevelModifyQuery.html" title="class in org.eclipse.persistence.queries">ObjectLevelModifyQuery</a>&nbsp;query)</pre>
<div class="block">INTERNAL:
This method adds the lock value to the translation row of the
passed in query. depending on the storage flag, the value is
either retrieved from the cache of the object.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>addLockValuesToTranslationRow</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
</dl>
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<h4>buildDeleteExpression</h4>
<pre>public&nbsp;<a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a>&nbsp;buildDeleteExpression(org.eclipse.persistence.internal.helper.DatabaseTable&nbsp;table,
<a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a>&nbsp;mainExpression,
org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;row)</pre>
<div class="block">INTERNAL:
When given an expression, this method will return a new expression with
the optimistic locking values included. The values are taken from the
passed in database row. This expression will be used in a delete call.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>buildDeleteExpression</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>protected&nbsp;<a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a>&nbsp;buildExpression()</pre>
<div class="block">INTERNAL:
Returns an expression that will be used for both the update and
delete where clause</div>
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<pre>public&nbsp;<a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a>&nbsp;buildUpdateExpression(org.eclipse.persistence.internal.helper.DatabaseTable&nbsp;table,
<a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a>&nbsp;mainExpression,
org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;row,
org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;row2)</pre>
<div class="block">INTERNAL:
When given an expression, this method will return a new expression
with the optimistic locking values included. The values are taken
from the passed in database row. This expression will be used in
an update call.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>buildUpdateExpression</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
</dl>
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<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;clone()</pre>
<div class="block">INTERNAL:
Clone the policy</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>clone</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a></code>&nbsp;in class&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd>
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<pre>public&nbsp;boolean&nbsp;supportsWriteLockValuesComparison()</pre>
<div class="block">INTERNAL:
Indicates that compareWriteLockValues method is supported by the policy.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>supportsWriteLockValuesComparison</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>public&nbsp;int&nbsp;compareWriteLockValues(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;value1,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;value2)</pre>
<div class="block">INTERNAL:
This method compares two writeLockValues.
The writeLockValues should be non-null and of type Number.
Returns:
-1 if value1 is less (older) than value2;
0 if value1 equals value2;
1 if value1 is greater (newer) than value2.
Throws:
NullPointerException if the passed value is null;
ClassCastException if the passed value is of a wrong type.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>compareWriteLockValues</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&nbsp;getDefaultLockingFieldType()</pre>
<div class="block">INTERNAL:
Return the default version locking filed java type, default is BigDecimal</div>
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<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;getBaseValue()</pre>
<div class="block">INTERNAL:
This is the base value that is older than all other values, it is used in the place of
null in some situations.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>getBaseValue</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>protected&nbsp;<a href="../../../../org/eclipse/persistence/descriptors/ClassDescriptor.html" title="class in org.eclipse.persistence.descriptors">ClassDescriptor</a>&nbsp;getDescriptor()</pre>
<div class="block">INTERNAL:</div>
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<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;getInitialWriteValue(org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</pre>
<div class="block">INTERNAL:
returns the initial locking value</div>
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<pre>public&nbsp;org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy.LockOnChange&nbsp;getLockOnChangeMode()</pre>
<div class="block">ADVANCED:
returns the LockOnChange mode for this policy. This mode specifies if a
Optimistic Write lock should be enforced on this entity when a set of mappings are changed.
Unfortunately this locking policy can not enforce an optimistic write lock unless a FK or DTF field
has changed so this type returns LockOnChange.NONE</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>getLockOnChangeMode</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
</dl>
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<h4>getNewLockValue</h4>
<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;getNewLockValue(<a href="../../../../org/eclipse/persistence/queries/ModifyQuery.html" title="class in org.eclipse.persistence.queries">ModifyQuery</a>&nbsp;query)</pre>
<div class="block">INTERNAL:
This method gets the write lock value from either the cache or
the object stored in the query. It then returns the new incremented value.</div>
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<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Vector.html?is-external=true" title="class or interface in java.util">Vector</a>&nbsp;getUnmappedFields()</pre>
<div class="block">INTERNAL:
This method returns any of the fields that are not mapped in
the object. In the case of the value being stored in the
cache, a vector with one value is returned. In the case
of being stored in the object, an empty vector is returned.</div>
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<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;getValueToPutInCache(org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;row,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</pre>
<div class="block">INTERNAL:
Return the value that should be stored in the identity map.
If the value is stored in the object, then return a null.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>getValueToPutInCache</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
</dl>
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<h4>getVersionDifference</h4>
<pre>public&nbsp;int&nbsp;getVersionDifference(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;currentValue,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;primaryKeys,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</pre>
<div class="block">PUBLIC:
Return the number of versions different between these objects.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>getVersionDifference</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>currentValue</code> - the new lock value</dd>
<dd><code>domainObject</code> - the object containing the version to be compared to</dd>
<dd><code>primaryKeys</code> - a vector containing the primary keys of the domainObject</dd>
<dd><code>session</code> - the session to be used with the comparison</dd>
</dl>
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<pre>public&nbsp;org.eclipse.persistence.internal.helper.DatabaseField&nbsp;getWriteLockField()</pre>
<div class="block">INTERNAL:
Return the write lock field.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>getWriteLockField</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;getWriteLockFieldName()</pre>
<div class="block">PUBLIC:
Return the field name of the field that stores the write lock value.</div>
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<pre>public&nbsp;<a href="../../../../org/eclipse/persistence/expressions/Expression.html" title="class in org.eclipse.persistence.expressions">Expression</a>&nbsp;getWriteLockUpdateExpression(<a href="../../../../org/eclipse/persistence/expressions/ExpressionBuilder.html" title="class in org.eclipse.persistence.expressions">ExpressionBuilder</a>&nbsp;builder,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</pre>
<div class="block">INTERNAL:
Retrun an expression that updates the write lock</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>getWriteLockUpdateExpression</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
</dl>
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<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;getWriteLockValue(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;primaryKey,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</pre>
<div class="block">INTERNAL:
This method will return the optimistic lock value for the object</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>getWriteLockValue</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<h4>incrementWriteLockValue</h4>
<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Number.html?is-external=true" title="class or interface in java.lang">Number</a>&nbsp;incrementWriteLockValue(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Number.html?is-external=true" title="class or interface in java.lang">Number</a>&nbsp;numberValue)</pre>
<div class="block">INTERNAL:
Adds 1 to the value passed in.</div>
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<h4>initialize</h4>
<pre>public&nbsp;void&nbsp;initialize(org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</pre>
<div class="block">INTERNAL:
It is responsible for initializing the policy;</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>initialize</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>public&nbsp;void&nbsp;initializeProperties()</pre>
<div class="block">INTERNAL:
It is responsible for initializing the policy properties;</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>initializeProperties</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>public&nbsp;boolean&nbsp;isCascaded()</pre>
<div class="block">PUBLIC:
Return true if the policy uses cascade locking.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>isCascaded</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
</dl>
</li>
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<a name="isNewerVersion-java.lang.Object-java.lang.Object-java.lang.Object-org.eclipse.persistence.internal.sessions.AbstractSession-">
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<h4>isNewerVersion</h4>
<pre>public&nbsp;boolean&nbsp;isNewerVersion(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;currentValue,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;primaryKey,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</pre>
<div class="block">INTERNAL:
Compares the value with the value from the object (or cache).
Will return true if the currentValue is newer than the domainObject.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>isNewerVersion</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
</dl>
</li>
</ul>
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<pre>public&nbsp;boolean&nbsp;isNewerVersion(org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;databaseRow,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;primaryKey,
org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</pre>
<div class="block">INTERNAL:
Compares the value from the row and from the object (or cache).
Will return true if the row is newer than the object.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>isNewerVersion</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
</dl>
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<h4>isNewerVersion</h4>
<pre>public&nbsp;boolean&nbsp;isNewerVersion(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;firstLockFieldValue,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;secondWriteLockFieldValue)</pre>
<div class="block">INTERNAL:
Compares two values.
Will return true if the firstLockFieldValue is newer than the secondWriteLockFieldValue.</div>
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<pre>public&nbsp;boolean&nbsp;isStoredInCache()</pre>
<div class="block">PUBLIC:
Return true if the lock value is stored in the cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>isStoredInCache</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>public&nbsp;boolean&nbsp;isStoredInObject()</pre>
<div class="block">PUBLIC:
Return true if the lock value is stored in the object.</div>
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<h4>lockValueFromObject</h4>
<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;lockValueFromObject(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject)</pre>
<div class="block">INTERNAL:
Retrieves the lock value from the object.</div>
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<h4>getVersionMapping</h4>
<pre>public&nbsp;<a href="../../../../org/eclipse/persistence/mappings/foundation/AbstractDirectMapping.html" title="class in org.eclipse.persistence.mappings.foundation">AbstractDirectMapping</a>&nbsp;getVersionMapping()</pre>
<div class="block">INTERNAL:
Returns the mapping that will be used to access the version value from an object.</div>
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<h4>mergeIntoParentCache</h4>
<pre>public&nbsp;void&nbsp;mergeIntoParentCache(org.eclipse.persistence.internal.sessions.UnitOfWorkImpl&nbsp;uow,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;primaryKey,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;object)</pre>
<div class="block">INTERNAL:
Only applicable when the value is stored in the cache. Will merge with the parent unit of work.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>mergeIntoParentCache</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
</dl>
</li>
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<a name="mergeIntoParentCache-org.eclipse.persistence.internal.identitymaps.CacheKey-org.eclipse.persistence.internal.identitymaps.CacheKey-">
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<pre>public&nbsp;void&nbsp;mergeIntoParentCache(org.eclipse.persistence.internal.identitymaps.CacheKey&nbsp;unitOfWorkCacheKey,
org.eclipse.persistence.internal.identitymaps.CacheKey&nbsp;parentSessionCacheKey)</pre>
<div class="block">INTERNAL:
This method should merge changes from the parent into the child.
#see this method in VersionLockingPolicy</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>mergeIntoParentCache</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>public&nbsp;void&nbsp;setDescriptor(<a href="../../../../org/eclipse/persistence/descriptors/ClassDescriptor.html" title="class in org.eclipse.persistence.descriptors">ClassDescriptor</a>&nbsp;descriptor)</pre>
<div class="block">INTERNAL:</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>setDescriptor</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>public&nbsp;void&nbsp;setIsStoredInCache(boolean&nbsp;isStoredInCache)</pre>
<div class="block">PUBLIC:
Set whether to store the lock in the cache or in the object.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>isStoredInCache</code> - set this to true if you would like to store lock in the cache and set it
to false if you would like to store it in the object.</dd>
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<pre>public&nbsp;void&nbsp;setIsCascaded(boolean&nbsp;isCascaded)</pre>
<div class="block">PUBLIC:
Set whether to use cascade locking on the policy.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>isCascaded</code> - set this to true if you would like cascade the locking
and set it to false if you would like no cascade locking.</dd>
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<h4>setupWriteFieldsForInsert</h4>
<pre>public&nbsp;void&nbsp;setupWriteFieldsForInsert(<a href="../../../../org/eclipse/persistence/queries/ObjectLevelModifyQuery.html" title="class in org.eclipse.persistence.queries">ObjectLevelModifyQuery</a>&nbsp;query)</pre>
<div class="block">INTERNAL:
This method must be included in any locking policy.
Put the initial writelock value into the modifyRow.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>setupWriteFieldsForInsert</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
</dl>
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<pre>protected&nbsp;void&nbsp;updateWriteLockValueForWrite(<a href="../../../../org/eclipse/persistence/queries/ObjectLevelModifyQuery.html" title="class in org.eclipse.persistence.queries">ObjectLevelModifyQuery</a>&nbsp;query,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;lockValue)</pre>
<div class="block">INTERNAL:
Update the row, object and change set with the version value.
This handles the version being mapped in nested aggregates, writable or read-only.</div>
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<pre>public&nbsp;boolean&nbsp;shouldUpdateVersionOnOwnedMappingChange()</pre>
<div class="block">INTERNAL:
Returns true if the policy has been set to set an optimistic read lock when a owning mapping changes.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>shouldUpdateVersionOnOwnedMappingChange</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>public&nbsp;boolean&nbsp;shouldUpdateVersionOnMappingChange()</pre>
<div class="block">INTERNAL:
Returns true if the policy has been set to set an optimistic read lock when any mapping changes.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>shouldUpdateVersionOnMappingChange</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>public&nbsp;void&nbsp;updateObjectWithWriteValue(<a href="../../../../org/eclipse/persistence/queries/ObjectLevelModifyQuery.html" title="class in org.eclipse.persistence.queries">ObjectLevelModifyQuery</a>&nbsp;query,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;lockValue)</pre>
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<pre>public&nbsp;void&nbsp;setLockOnChangeMode(org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy.LockOnChange&nbsp;lockOnChangeMode)</pre>
<div class="block">ADVANCED:
Sets the LockOnChange mode for this policy. This mode specifies if a
Optimistic Write lock should be enforced on this entity when set of mappings are changed.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>setLockOnChangeMode</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>public&nbsp;void&nbsp;setWriteLockField(org.eclipse.persistence.internal.helper.DatabaseField&nbsp;writeLockField)</pre>
<div class="block">ADVANCED:
Set the write lock field.
This can be used for advanced field types, such as XML nodes, or to set the field type.</div>
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<pre>public&nbsp;void&nbsp;setWriteLockFieldName(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;writeLockFieldName)</pre>
<div class="block">PUBLIC:
Set the write lock field name.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>writeLockFieldName</code> - the name of the field to lock against.</dd>
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<pre>public&nbsp;void&nbsp;storeInCache()</pre>
<div class="block">PUBLIC:
Configure the version lock value to be stored in the cache.
This allows for the object not to require to store its version value as an attribute.
Note: if using a stateless model where the object can be passed to a client and then
later updated in a different transaction context, then the version lock value should
not be stored in the cache, but in the object to ensure it is the correct value for
that object. This is the default.</div>
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<pre>public&nbsp;void&nbsp;storeInObject()</pre>
<div class="block">PUBLIC:
Configure the version lock value to be stored in the object.
The object must define a mapping and an attribute to store the version value.
Note: the value will be updated internally by EclipseLink and should not be updated
by the application.</div>
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<pre>public&nbsp;void&nbsp;updateRowAndObjectForUpdate(<a href="../../../../org/eclipse/persistence/queries/ObjectLevelModifyQuery.html" title="class in org.eclipse.persistence.queries">ObjectLevelModifyQuery</a>&nbsp;query,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject)</pre>
<div class="block">INTERNAL:
This method updates the modify row, and the domain object
with the new lock value.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>updateRowAndObjectForUpdate</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>public&nbsp;void&nbsp;writeLockValueIntoRow(<a href="../../../../org/eclipse/persistence/queries/ObjectLevelModifyQuery.html" title="class in org.eclipse.persistence.queries">ObjectLevelModifyQuery</a>&nbsp;query,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;domainObject)</pre>
<div class="block">INTERNAL:
This method updates the modify row with the old lock value.</div>
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<pre>public&nbsp;void&nbsp;validateDelete(int&nbsp;rowCount,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;object,
<a href="../../../../org/eclipse/persistence/queries/DeleteObjectQuery.html" title="class in org.eclipse.persistence.queries">DeleteObjectQuery</a>&nbsp;query)</pre>
<div class="block">INTERNAL:
Check the row count for lock failure.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>validateDelete</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
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<pre>public&nbsp;void&nbsp;validateUpdate(int&nbsp;rowCount,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;object,
<a href="../../../../org/eclipse/persistence/queries/WriteObjectQuery.html" title="class in org.eclipse.persistence.queries">WriteObjectQuery</a>&nbsp;query)</pre>
<div class="block">INTERNAL:
Check the row count for lock failure.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>validateUpdate</code>&nbsp;in interface&nbsp;<code>org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicy</code></dd>
</dl>
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