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<p><a id="BABHFHEI" name="BABHFHEI"></a></p>
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<h1>Transient mapping</h1>
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<p><a id="sthref149" name="sthref149"></a><a id="sthref150" name="sthref150"></a><a id="sthref151" name="sthref151"></a><a id="sthref152" name="sthref152"></a>Use the Transient Mapping to specify a or field of the entity class that <span class="italic">is not</span> persistent.</p>
<p>To create a version mapping:</p>
<ol type="1" start="1">
<li>
<p>In the <a href="ref_persistence_outline.htm#BABEGGFE">JPA Structure view</a>, select the field to map. The <a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a> displays the properties for the selected.</p>
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<li>
<p>In the <span class="gui-object-title">Map As</span> field, select <span class="gui-object-action">Transient</span>.</p>
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<p>Eclipse adds the following annotation to the field:</p>
<pre xml:space="preserve" class="oac_no_warn">
@Transient
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<p> </p>
<img src="img/ngrelt.png" alt="Related task" title="Related task" /><br />
<br />
<a href="task_mapping.htm#BABDGBIJ">Mapping an entity</a>
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<img src="img/ngrelr.png" alt="Related reference" title="Related reference" /><br />
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<a href="ref_persistence_outline.htm#BABEGGFE">JPA Structure view</a><br />
<a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a>
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<img src="img/ngrelc.png" alt="Related concept" title="Related concept" /><br />
<br />
<a href="concept_mapping.htm#BABBDJFI">Understanding OR mappings</a><br />
<a href="concepts001.htm#BABBGFJG">Understanding EJB 3.0 Java Persistence API</a></div>
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