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<title>Adding virtual attributes</title>
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<div class="sect1"><!-- infolevel="all" infotype="General" -->
<h1><a id="sthref122" name="sthref122"></a><a id="sthref123" name="sthref123"></a>Adding virtual attributes</h1>
<p>To add a virtual attribute to an entity:</p>
<ol>
<li>
<p>Open the <code>eclipselink-orm.xml</code> mapping file.</p>
</li>
<li>
<p>In the <a href="ref_persistence_outline.htm#BABEGGFE">JPA Structure view</a>, right-click an entity and select <span class="bold">Add Virtual Attribute</span>. The Add Virtual Attribute dialog appears.</p>
<div class="figure"><a id="sthref124" name="sthref124"></a>
<p class="titleinfigure">Add Virtual Attribute Dialog</p>
<img src="img/add_virtual_attribute_dialog.png" alt="" title="" /><br /></div>
<!-- class="figure" --></li>
<li>
<p>Complete the fields on the <a href="reference080.htm#CACHEFCH">Add Virtual Attribute dialog</a> and click <span class="bold">OK</span>. Dali adds the virtual attribute to the entity.</p>
<div class="figure"><a id="sthref125" name="sthref125"></a>
<p class="titleinfigure">Virtual Attribute</p>
<img src="img/jpa_structure_virtual_attribute.png" alt="" title="" /><br /></div>
<!-- class="figure" --></li>
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<p class="subhead2">Related reference</p>
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<li>
<p><a href="reference080.htm#CACHEFCH">Add Virtual Attribute dialog</a></p>
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