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<title>Synchronizing classes</title>
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<p class="betadraftsubtitle">Beta Draft: 2013-01-03</p>
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<div class="sect1"><!-- infolevel="all" infotype="General" -->
<h1>Synchronizing classes</h1>
<p>As you work with the classes in your Java project, you will need to update the <code>persistence.xml</code> file to reflect the changes. <a id="sthref145" name="sthref145"></a><a id="sthref146" name="sthref146"></a><a id="sthref147" name="sthref147"></a></p>
<p>Use this procedure to synchronize the <code>persistence.xml</code> file:</p>
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<p>Right-click the <code>persistence.xml</code> file in the <span class="gui-object-title">Project Explorer</span> and select <span class="gui-object-action">JPA Tools &gt; Synchronize Class List</span>.</p>
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<p class="notep1">Note:</p>
<p>Use this function if you selected <span class="bold">Annotated classes must be listed in the persistence.xml option</span> in the <a href="ref_jpa_facet.htm#CACIFDIF">JPA Facet page</a>. In general, you do not have to use this function within the container.</p>
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<p class="titleinfigure">Synchronizing the persistence.xml File</p>
<img src="img/synchornize_classes.png" alt="This figure shows the JPA Tools &gt; Synchronize Classes option." title="This figure shows the JPA Tools &gt; Synchronize Classes option." /><br /></div>
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<p>Dali adds the necessary <code>&lt;class&gt;</code> elements to the <code>persistence.xml</code> file.</p>
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<p>Use the <a href="ref_persistence_xmll_editor.htm#CIACCHID">persistence.xml Editor</a> to continue editing the <code>persistence.xml</code> file.</p>
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<p class="subhead2">Related reference</p>
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<p><a href="task_manage_persistence.htm#CIHDAJID">Managing the persistence.xml file</a></p>
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<p class="subhead2">Related concepts</p>
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<p><a href="concepts002.htm#CHDHAGIH">The persistence.xml file</a></p>
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