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<p><a id="BABFEICE" name="BABFEICE"></a></p>
<div class="sect2"><!-- infolevel="all" infotype="General" -->
<h1>Embeddable</h1>
<p><a id="sthref84" name="sthref84"></a><a id="sthref85" name="sthref85"></a>An <span class="bold">Embedded</span> class is a class whose instances are stored as part of an owning entity; it shares the identity of the owning entity. Each field of the embedded class is mapped to the database table associated with the owning entity.</p>
<p>To override the mapping information for a specific subclass, use the <code>@AttributeOverride</code> annotation for that specific class.</p>
<p><a id="sthref86" name="sthref86"></a><a id="sthref87" name="sthref87"></a><a id="sthref88" name="sthref88"></a>An embeddable entity is identified by the <code>@Embeddable</code> annotation.</p>
<p>Use this procedure to add embeddable persistence to an existing entity:</p>
<ol start="1">
<li>
<p>Open the Java class in the <span class="gui-object-title">Package Explorer</span>.</p>
</li>
<li>
<p>Select the class in the JPA Structure view.</p>
</li>
<li>
<p>In the <span class="gui-object-title">JPA Details</span> view, use the <span class="gui-object-action">Map As</span> drop-list to select <span class="gui-object-action">Embeddable</span>.</p>
<div class="figure"><a id="sthref89" name="sthref89"></a>
<p class="titleinfigure">Selecting Embeddable Persistence</p>
<img src="img/persistence_view_embedded.png" alt="Selecting embedded persistence on the JPA Details view." title="Selecting embedded persistence on the JPA Details view." /><br /></div>
<!-- class="figure" --></li>
<li>
<p>Complete the remaining <a href="ref_persistence_prop_view.htm#BABFAEBB">JPA Details view (for entities)</a>.</p>
</li>
</ol>
<p> </p>
<img src="img/ngrelt.png" alt="Related tasks" title="Related tasks" /><br />
<dl>
<dd><a href="task_add_persistence.htm#BABHICAI">Adding persistence to a class</a></dd>
<dd><a href="task_additonal_tables.htm#CIHGBIEI">Specifying additional tables</a></dd>
<dd><a href="task_inheritance.htm#CIHCCCJD">Specifying entity inheritance</a></dd>
</dl>
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