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<title>Transient mapping</title>
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<meta name="doctitle" content="Transient mapping" />
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<p class="betadraftsubtitle">Beta Draft: 2013-01-03</p>
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<div class="sect2"><!-- infolevel="all" infotype="General" -->
<h1>Transient mapping</h1>
<p><a id="sthref274" name="sthref274"></a><a id="sthref275" name="sthref275"></a><a id="sthref276" name="sthref276"></a><a id="sthref277" name="sthref277"></a>Use the Transient Mapping to specify a field of the entity class that <span class="italic">is not</span> persistent.</p>
<p>To create a transient mapping:</p>
<ol>
<li>
<p>In the <a href="ref_persistence_outline.htm#BABEGGFE">JPA Structure view</a>, select the field to map.</p>
</li>
<li>
<p>Right-click the field and then select <span class="bold">Map As Transient</span>. The <a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a> displays the properties for the selected.</p>
<div class="figure"><a id="sthref278" name="sthref278"></a>
<p class="titleinfigure">JPA Details, Transient Mapping</p>
<img src="img/jpa_details_transient.png" alt="JPA Details, Transient Mapping" title="JPA Details, Transient Mapping" /><br /></div>
<!-- class="figure" --></li>
</ol>
<p>There are no additional options for Transient mappings. Eclipse adds the following annotation to the field:</p>
<pre xml:space="preserve" class="oac_no_warn">
@Transient
</pre>
<a id="sthref279" name="sthref279"></a>
<p class="subhead2">Related tasks</p>
<ul>
<li>
<p><a href="task_mapping.htm#BABDGBIJ">Mapping an entity</a></p>
</li>
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<p class="subhead2">Related references</p>
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<li>
<p><a href="ref_persistence_outline.htm#BABEGGFE">JPA Structure view</a></p>
</li>
<li>
<p><a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a></p>
</li>
</ul>
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<p class="subhead2">Related concepts</p>
<ul>
<li>
<p><a href="concept_mapping.htm#BABBDJFI">Understanding OR mappings</a></p>
</li>
<li>
<p><a href="concepts001.htm#BABBGFJG">Understanding Java Persistence API</a></p>
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