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| <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> |
| </ul> |
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| <p class="subhead2">Related references</p> |
| <ul> |
| <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> |
| <a id="sthref281" name="sthref281"></a> |
| <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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