api/3.0/org/eclipse/persistence/queries/DoesExistQuery.html - gerrit/www.eclipse.org/eclipselink - Git at Google

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 <div class="subTitle">org.eclipse.persistence.queries</div>
 <h2 title="Class DoesExistQuery" class="title">Class DoesExistQuery</h2>
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 <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><a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html" title="class in org.eclipse.persistence.queries">org.eclipse.persistence.queries.DatabaseQuery</a></li>
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 <ul class="inheritance">
 <li>org.eclipse.persistence.queries.DoesExistQuery</li>
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 <br>
 <pre>public class <span class="typeNameLabel">DoesExistQuery</span>
 extends <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html" title="class in org.eclipse.persistence.queries">DatabaseQuery</a></pre>
 <div class="block"><p><b>Purpose</b>:
  This should only be used by the descriptor, this should not be executed directly.
  Used to determine if an object resides on the database.
  DoesExistQuery is normally used to determine whether to make an update
  or insert statement when writing an object.

  <p><b>Responsibilities</b>:
  Verify the existence of an object. Used only by a write object query.</div>
 <dl>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="../../../../serialized-form.html#org.eclipse.persistence.queries.DoesExistQuery">Serialized Form</a></dd>
 <dt><span class="simpleTagLabel">Author:</span></dt>
 <dd>Yvon Lavoie</dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>TOPLink/Java 1.0</dd>
 </dl>
 </li>
 </ul>
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 <ul class="blockList">
 <li class="blockList"><a name="nested.classes.inherited.from.class.org.eclipse.persistence.queries.DatabaseQuery">
 <!--   -->
 </a>
 <h3>Nested classes/interfaces inherited from class&nbsp;org.eclipse.persistence.queries.<a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html" title="class in org.eclipse.persistence.queries">DatabaseQuery</a></h3>
 <code><a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.ParameterType.html" title="enum in org.eclipse.persistence.queries">DatabaseQuery.ParameterType</a></code></li>
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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>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#AssumeExistence">AssumeExistence</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/queries/DoesExistQuery.html#AssumeNonExistence">AssumeNonExistence</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/queries/DoesExistQuery.html#CheckCache">CheckCache</a></span></code>&nbsp;</td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#checkCacheFirst">checkCacheFirst</a></span></code>
 <div class="block">Flag to determine if the cache should be check first in addition to another option.</div>
 </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/queries/DoesExistQuery.html#CheckDatabase">CheckDatabase</a></span></code>&nbsp;</td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>protected boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#checkDatabaseIfInvalid">checkDatabaseIfInvalid</a></span></code>
 <div class="block">Flag to determine cache invalidation policy support.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>protected int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#existencePolicy">existencePolicy</a></span></code>
 <div class="block">Flag to determine existence check policy.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <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/queries/DoesExistQuery.html#object">object</a></span></code>&nbsp;</td>
 </tr>
 <tr 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/queries/DoesExistQuery.html#primaryKey">primaryKey</a></span></code>
 <div class="block">Query that is performing the does exist check.</div>
 </td>
 </tr>
 </table>
 <ul class="blockList">
 <li class="blockList"><a name="fields.inherited.from.class.org.eclipse.persistence.queries.DatabaseQuery">
 <!--   -->
 </a>
 <h3>Fields inherited from class&nbsp;org.eclipse.persistence.queries.<a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html" title="class in org.eclipse.persistence.queries">DatabaseQuery</a></h3>
 <code><a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#accessors">accessors</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#allowNativeSQLQuery">allowNativeSQLQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#argumentFields">argumentFields</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#argumentParameterTypes">argumentParameterTypes</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#arguments">arguments</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#argumentTypeNames">argumentTypeNames</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#argumentTypes">argumentTypes</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#argumentValues">argumentValues</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#BATCH_FETCH_PROPERTY">BATCH_FETCH_PROPERTY</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#CascadeAggregateDelete">CascadeAggregateDelete</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#CascadeAllParts">CascadeAllParts</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#CascadeByMapping">CascadeByMapping</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#CascadeDependentParts">CascadeDependentParts</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#cascadePolicy">cascadePolicy</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#CascadePrivateParts">CascadePrivateParts</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#descriptor">descriptor</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#descriptors">descriptors</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#doNotRedirect">doNotRedirect</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#executionSession">executionSession</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#flushOnExecute">flushOnExecute</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#hintString">hintString</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isCustomQueryUsed">isCustomQueryUsed</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isExecutionClone">isExecutionClone</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isNativeConnectionRequired">isNativeConnectionRequired</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isPrepared">isPrepared</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isUserDefined">isUserDefined</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isUserDefinedSQLCall">isUserDefinedSQLCall</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#monitorName">monitorName</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#name">name</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#NoCascading">NoCascading</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#nullableArguments">nullableArguments</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#parameterDelimiter">parameterDelimiter</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#partitioningPolicy">partitioningPolicy</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#properties">properties</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#queryMechanism">queryMechanism</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#queryTimeout">queryTimeout</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#queryTimeoutUnit">queryTimeoutUnit</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#redirector">redirector</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#session">session</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#sessionName">sessionName</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#shouldBindAllParameters">shouldBindAllParameters</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#shouldCacheStatement">shouldCacheStatement</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#shouldCloneCall">shouldCloneCall</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#shouldMaintainCache">shouldMaintainCache</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#shouldPrepare">shouldPrepare</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#shouldRetrieveBypassCache">shouldRetrieveBypassCache</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#shouldStoreBypassCache">shouldStoreBypassCache</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#shouldUseWrapperPolicy">shouldUseWrapperPolicy</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#shouldValidateUpdateCallCacheUse">shouldValidateUpdateCallCacheUse</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#sourceMapping">sourceMapping</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#translationRow">translationRow</a></code></li>
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 <!-- ======== CONSTRUCTOR SUMMARY ======== -->
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 <h3>Constructor Summary</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation">
 <caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <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/queries/DoesExistQuery.html#DoesExistQuery--">DoesExistQuery</a></span>()</code>
 <div class="block">PUBLIC:
  Initialize the state of the query .</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#DoesExistQuery-org.eclipse.persistence.queries.Call-">DoesExistQuery</a></span>(<a href="../../../../org/eclipse/persistence/queries/Call.html" title="interface in org.eclipse.persistence.queries">Call</a>&nbsp;call)</code>
 <div class="block">PUBLIC:
  Create a query to check if the object exists.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#DoesExistQuery-java.lang.Object-">DoesExistQuery</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;object)</code>
 <div class="block">PUBLIC:
  Create a query to check if the object exists.</div>
 </td>
 </tr>
 </table>
 </li>
 </ul>
 <!-- ========== METHOD SUMMARY =========== -->
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 <li class="blockList"><a name="method.summary">
 <!--   -->
 </a>
 <h3>Method Summary</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
 <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/queries/DoesExistQuery.html#assumeExistenceForDoesExist--">assumeExistenceForDoesExist</a></span>()</code>
 <div class="block">PUBLIC:
  Assume that if the objects primary key does not include null then it must exist.</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/queries/DoesExistQuery.html#assumeNonExistenceForDoesExist--">assumeNonExistenceForDoesExist</a></span>()</code>
 <div class="block">PUBLIC:
  Assume that the object does not exist.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#checkCacheForDoesExist--">checkCacheForDoesExist</a></span>()</code>
 <div class="block">PUBLIC:
  Assume that if the objects primary key does not include null
  and it is in the cache, then is must exist.</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#checkDatabaseForDoesExist--">checkDatabaseForDoesExist</a></span>()</code>
 <div class="block">PUBLIC:
  Perform does exist check on the database through selecting the primary key.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#checkDescriptor-java.lang.Object-org.eclipse.persistence.internal.sessions.AbstractSession-">checkDescriptor</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;object,
                org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)</code>
 <div class="block">INTERNAL:
  Ensure that the descriptor has been set.</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/queries/DoesExistQuery.html#checkEarlyReturn-org.eclipse.persistence.internal.sessions.AbstractSession-org.eclipse.persistence.internal.sessions.AbstractRecord-">checkEarlyReturn</a></span>(org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session,
                 org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;translationRow)</code>
 <div class="block">INTERNAL:
  Check if existence can be determined without going to the database.</div>
 </td>
 </tr>
 <tr id="i6" 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/queries/DoesExistQuery.html#checkEarlyReturn-java.lang.Object-java.lang.Object-org.eclipse.persistence.internal.sessions.AbstractSession-org.eclipse.persistence.internal.sessions.AbstractRecord-">checkEarlyReturn</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;object,
                 <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,
                 org.eclipse.persistence.internal.sessions.AbstractRecord&nbsp;translationRow)</code>
 <div class="block">INTERNAL:
  Check if existence can be determined without going to the database.</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/queries/DoesExistQuery.html#executeDatabaseQuery--">executeDatabaseQuery</a></span>()</code>
 <div class="block">INTERNAL:
  Return if the object exists on the database.</div>
 </td>
 </tr>
 <tr id="i8" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#getCheckCacheFirst--">getCheckCacheFirst</a></span>()</code>
 <div class="block">INTERNAL:</div>
 </td>
 </tr>
 <tr id="i9" class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#getCheckDatabaseIfInvalid--">getCheckDatabaseIfInvalid</a></span>()</code>
 <div class="block">INTERNAL:</div>
 </td>
 </tr>
 <tr id="i10" 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/queries/DoesExistQuery.html#getDoesExistField--">getDoesExistField</a></span>()</code>
 <div class="block">INTERNAL:
  Return the write lock field or the first primary key field if not using locking.</div>
 </td>
 </tr>
 <tr id="i11" class="rowColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#getExistencePolicy--">getExistencePolicy</a></span>()</code>
 <div class="block">INTERNAL:
  Return the existence policy for this existence Query</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/queries/DoesExistQuery.html#getObject--">getObject</a></span>()</code>
 <div class="block">PUBLIC:
  Return the object.</div>
 </td>
 </tr>
 <tr id="i13" 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/queries/DoesExistQuery.html#getPrimaryKey--">getPrimaryKey</a></span>()</code>
 <div class="block">INTERNAL:
  Return the primaryKey.</div>
 </td>
 </tr>
 <tr id="i14" class="altColor">
 <td class="colFirst"><code><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/queries/DoesExistQuery.html#getReferenceClass--">getReferenceClass</a></span>()</code>
 <div class="block">Return the domain class associated with this query.</div>
 </td>
 </tr>
 <tr id="i15" class="rowColor">
 <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/queries/DoesExistQuery.html#getReferenceClassName--">getReferenceClassName</a></span>()</code>
 <div class="block">INTERNAL:
  Return the name of the reference class for this query
  Note: Although the API is designed to avoid requirement of classes being on the classpath,
  this is not a user defined query type, so it is ok to access the class.</div>
 </td>
 </tr>
 <tr id="i16" class="altColor">
 <td class="colFirst"><code>protected void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#prepare--">prepare</a></span>()</code>
 <div class="block">INTERNAL:
  Prepare the receiver for execution in a session.</div>
 </td>
 </tr>
 <tr id="i17" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#prepareForExecution--">prepareForExecution</a></span>()</code>
 <div class="block">INTERNAL:
  Prepare the receiver for execution in a session.</div>
 </td>
 </tr>
 <tr id="i18" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#setCheckCacheFirst-boolean-">setCheckCacheFirst</a></span>(boolean&nbsp;checkCacheFirst)</code>
 <div class="block">INTERNAL:
  Sets checkCacheFirst flag.</div>
 </td>
 </tr>
 <tr id="i19" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#setCheckDatabaseIfInvalid-boolean-">setCheckDatabaseIfInvalid</a></span>(boolean&nbsp;checkCacheFirst)</code>
 <div class="block">INTERNAL:
  Sets checkDatabaseIfInvalid flag.</div>
 </td>
 </tr>
 <tr id="i20" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#setExistencePolicy-int-">setExistencePolicy</a></span>(int&nbsp;existencePolicy)</code>
 <div class="block">INTERNAL:
  Set if the existence policy, this must be set to one of the constants.</div>
 </td>
 </tr>
 <tr id="i21" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#setObject-java.lang.Object-">setObject</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;object)</code>
 <div class="block">PUBLIC:
  Set the object.</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/queries/DoesExistQuery.html#setPrimaryKey-java.lang.Object-">setPrimaryKey</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;primaryKey)</code>
 <div class="block">INTERNAL:
  Set the primaryKey.</div>
 </td>
 </tr>
 <tr id="i23" class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/persistence/queries/DoesExistQuery.html#shouldAssumeExistenceForDoesExist--">shouldAssumeExistenceForDoesExist</a></span>()</code>
 <div class="block">PUBLIC:
  Returns true if the does exist check should be based only
  on whether the primary key of the object is set</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/queries/DoesExistQuery.html#shouldAssumeNonExistenceForDoesExist--">shouldAssumeNonExistenceForDoesExist</a></span>()</code>
 <div class="block">PUBLIC:
  Returns true if the does exist check should assume non existence.</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/queries/DoesExistQuery.html#shouldCheckCacheForDoesExist--">shouldCheckCacheForDoesExist</a></span>()</code>
 <div class="block">PUBLIC:
  Returns true if the does exist check should be based only
  on a cache check.</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/queries/DoesExistQuery.html#shouldCheckDatabaseForDoesExist--">shouldCheckDatabaseForDoesExist</a></span>()</code>
 <div class="block">PUBLIC:
  Returns true if the does exist check should query the database.</div>
 </td>
 </tr>
 </table>
 <ul class="blockList">
 <li class="blockList"><a name="methods.inherited.from.class.org.eclipse.persistence.queries.DatabaseQuery">
 <!--   -->
 </a>
 <h3>Methods inherited from class&nbsp;org.eclipse.persistence.queries.<a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html" title="class in org.eclipse.persistence.queries">DatabaseQuery</a></h3>
 <code><a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#addArgument-java.lang.String-">addArgument</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#addArgument-java.lang.String-java.lang.Class-">addArgument</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#addArgument-java.lang.String-java.lang.Class-boolean-">addArgument</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#addArgument-java.lang.String-java.lang.Class-org.eclipse.persistence.queries.DatabaseQuery.ParameterType-">addArgument</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#addArgument-java.lang.String-java.lang.Class-org.eclipse.persistence.queries.DatabaseQuery.ParameterType-boolean-">addArgument</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#addArgument-java.lang.String-java.lang.String-">addArgument</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#addArgumentByTypeName-java.lang.String-java.lang.String-">addArgumentByTypeName</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#addArgumentValue-java.lang.Object-">addArgumentValue</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#addArgumentValues-java.util.List-">addArgumentValues</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#addCall-org.eclipse.persistence.queries.Call-">addCall</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#addStatement-org.eclipse.persistence.internal.expressions.SQLStatement-">addStatement</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#bindAllParameters--">bindAllParameters</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#buildArgumentFields--">buildArgumentFields</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#buildSelectionCriteria-org.eclipse.persistence.internal.sessions.AbstractSession-">buildSelectionCriteria</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#cacheStatement--">cacheStatement</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#cascadeAllParts--">cascadeAllParts</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#cascadeByMapping--">cascadeByMapping</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#cascadeOnlyDependentParts--">cascadeOnlyDependentParts</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#cascadePrivateParts--">cascadePrivateParts</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#checkDescriptor-org.eclipse.persistence.internal.sessions.AbstractSession-">checkDescriptor</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#checkForCustomQuery-org.eclipse.persistence.internal.sessions.AbstractSession-org.eclipse.persistence.internal.sessions.AbstractRecord-">checkForCustomQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#checkPrepare-org.eclipse.persistence.internal.sessions.AbstractSession-org.eclipse.persistence.internal.sessions.AbstractRecord-">checkPrepare</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#checkPrepare-org.eclipse.persistence.internal.sessions.AbstractSession-org.eclipse.persistence.internal.sessions.AbstractRecord-boolean-">checkPrepare</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#clone--">clone</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#clonedQueryExecutionComplete-org.eclipse.persistence.queries.DatabaseQuery-org.eclipse.persistence.internal.sessions.AbstractSession-">clonedQueryExecutionComplete</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#convertClassNamesToClasses-java.lang.ClassLoader-">convertClassNamesToClasses</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#copyFromQuery-org.eclipse.persistence.queries.DatabaseQuery-">copyFromQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#dontBindAllParameters--">dontBindAllParameters</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#dontCacheStatement--">dontCacheStatement</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#dontCascadeParts--">dontCascadeParts</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#dontMaintainCache--">dontMaintainCache</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#execute-org.eclipse.persistence.internal.sessions.AbstractSession-org.eclipse.persistence.internal.sessions.AbstractRecord-">execute</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#executeInUnitOfWork-org.eclipse.persistence.internal.sessions.UnitOfWorkImpl-org.eclipse.persistence.internal.sessions.AbstractRecord-">executeInUnitOfWork</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#extractRemoteResult-org.eclipse.persistence.internal.sessions.remote.Transporter-">extractRemoteResult</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getAccessor--">getAccessor</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getAccessors--">getAccessors</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getArgumentParameterTypes--">getArgumentParameterTypes</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getArguments--">getArguments</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getArgumentTypeNames--">getArgumentTypeNames</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getArgumentTypes--">getArgumentTypes</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getArgumentValues--">getArgumentValues</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getBatchObjects--">getBatchObjects</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getCall--">getCall</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getCascadePolicy--">getCascadePolicy</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getDatasourceCall--">getDatasourceCall</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getDatasourceCalls--">getDatasourceCalls</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getDefaultRedirector--">getDefaultRedirector</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getDescriptor--">getDescriptor</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getDescriptors--">getDescriptors</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getDomainClassNounName-java.lang.String-">getDomainClassNounName</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getDoNotRedirect--">getDoNotRedirect</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getEJBQLString--">getEJBQLString</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getExecutionSession--">getExecutionSession</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getFlushOnExecute--">getFlushOnExecute</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getHintString--">getHintString</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getJPQLString--">getJPQLString</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getMonitorName--">getMonitorName</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getName--">getName</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getNullableArguments--">getNullableArguments</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getParameterDelimiter--">getParameterDelimiter</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getParameterDelimiterChar--">getParameterDelimiterChar</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getPartitioningPolicy--">getPartitioningPolicy</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getProperties--">getProperties</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getProperty-java.lang.Object-">getProperty</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getQueryMechanism--">getQueryMechanism</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getQueryNounName-java.lang.String-">getQueryNounName</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getQueryTimeout--">getQueryTimeout</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getQueryTimeoutUnit--">getQueryTimeoutUnit</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getRedirector--">getRedirector</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getRedirectorForQuery--">getRedirectorForQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getSelectionCriteria--">getSelectionCriteria</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getSensorName-java.lang.String-java.lang.String-">getSensorName</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getSession--">getSession</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getSessionName--">getSessionName</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getShouldBindAllParameters--">getShouldBindAllParameters</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getSourceMapping--">getSourceMapping</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getSQLStatement--">getSQLStatement</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getSQLString--">getSQLString</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getSQLStrings--">getSQLStrings</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getTranslatedSQLString-org.eclipse.persistence.sessions.Session-org.eclipse.persistence.sessions.Record-">getTranslatedSQLString</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getTranslatedSQLStrings-org.eclipse.persistence.sessions.Session-org.eclipse.persistence.sessions.Record-">getTranslatedSQLStrings</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#getTranslationRow--">getTranslationRow</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#hasAccessor--">hasAccessor</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#hasArguments--">hasArguments</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#hasNullableArguments--">hasNullableArguments</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#hasProperties--">hasProperties</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#hasQueryMechanism--">hasQueryMechanism</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#hasSessionName--">hasSessionName</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#ignoreBindAllParameters--">ignoreBindAllParameters</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#ignoreCacheStatement--">ignoreCacheStatement</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isCallQuery--">isCallQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isCascadeOfAggregateDelete--">isCascadeOfAggregateDelete</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isCustomQueryUsed--">isCustomQueryUsed</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isCustomSelectionQuery--">isCustomSelectionQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isDataModifyQuery--">isDataModifyQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isDataReadQuery--">isDataReadQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isDefaultPropertiesQuery--">isDefaultPropertiesQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isDeleteAllQuery--">isDeleteAllQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isDeleteObjectQuery--">isDeleteObjectQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isDirectReadQuery--">isDirectReadQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isExecutionClone--">isExecutionClone</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isExpressionQuery--">isExpressionQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isInsertObjectQuery--">isInsertObjectQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isJPQLCallQuery--">isJPQLCallQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isModifyAllQuery--">isModifyAllQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isModifyQuery--">isModifyQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isNativeConnectionRequired--">isNativeConnectionRequired</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isObjectBuildingQuery--">isObjectBuildingQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isObjectLevelModifyQuery--">isObjectLevelModifyQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isObjectLevelReadQuery--">isObjectLevelReadQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isPrepared--">isPrepared</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isReadAllQuery--">isReadAllQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isReadObjectQuery--">isReadObjectQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isReadQuery--">isReadQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isReportQuery--">isReportQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isResultSetMappingQuery--">isResultSetMappingQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isSQLCallQuery--">isSQLCallQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isUpdateAllQuery--">isUpdateAllQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isUpdateObjectQuery--">isUpdateObjectQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isUserDefined--">isUserDefined</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isUserDefinedSQLCall--">isUserDefinedSQLCall</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isValueReadQuery--">isValueReadQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#isWriteObjectQuery--">isWriteObjectQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#maintainCache--">maintainCache</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#prepareCall-org.eclipse.persistence.sessions.Session-org.eclipse.persistence.sessions.Record-">prepareCall</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#prepareCustomQuery-org.eclipse.persistence.queries.DatabaseQuery-">prepareCustomQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#prepareForRemoteExecution--">prepareForRemoteExecution</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#prepareFromQuery-org.eclipse.persistence.queries.DatabaseQuery-">prepareFromQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#prepareInternal-org.eclipse.persistence.internal.sessions.AbstractSession-">prepareInternal</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#redirectQuery-org.eclipse.persistence.queries.QueryRedirector-org.eclipse.persistence.queries.DatabaseQuery-org.eclipse.persistence.internal.sessions.AbstractSession-org.eclipse.persistence.internal.sessions.AbstractRecord-">redirectQuery</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#remoteExecute--">remoteExecute</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#remoteExecute-org.eclipse.persistence.internal.sessions.AbstractSession-">remoteExecute</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#removeProperty-java.lang.Object-">removeProperty</a>, <a href="../../../../org/eclipse/persistence/queries/DatabaseQuery.html#replaceValueHoldersIn-java.lang.Object-org.eclipse.persistence.internal.sessions.remote.RemoteSessionController-">replaceValueHoldersIn</a>, <a 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  Create a query to check if the object exists.</div>
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  Create a query to check if the object exists.</div>
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  Assume that if the objects primary key does not include null then it must exist.
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  Assume that if the objects primary key does not include null
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  Perform does exist check on the database through selecting the primary key.</div>
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 <div class="block">INTERNAL:
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  Check if existence can be determined without going to the database.
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  Return if the object exists on the database.
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 <div class="block">INTERNAL:
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                             org.eclipse.persistence.internal.sessions.AbstractSession&nbsp;session)
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  Ensure that the descriptor has been set.</div>
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 <div class="block">INTERNAL:
  Prepare the receiver for execution in a session.</div>
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 <dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
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 <pre>public&nbsp;void&nbsp;setExistencePolicy(int&nbsp;existencePolicy)</pre>
 <div class="block">INTERNAL:
  Set if the existence policy, this must be set to one of the constants.</div>
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 <pre>public&nbsp;boolean&nbsp;shouldAssumeExistenceForDoesExist()</pre>
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  Returns true if the does exist check should be based only
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  Returns true if the does exist check should be based only
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 <pre>public&nbsp;void&nbsp;setCheckCacheFirst(boolean&nbsp;checkCacheFirst)</pre>
 <div class="block">INTERNAL:
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 <pre>public&nbsp;void&nbsp;setCheckDatabaseIfInvalid(boolean&nbsp;checkCacheFirst)</pre>
 <div class="block">INTERNAL:
  Sets checkDatabaseIfInvalid flag.  If true, query will go to the
  database when it finds the object in the cache and it is invalid.
  This is only valid when it checks the cache, and is true by default</div>
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