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<title>Embedded mapping</title>
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<div class="sect2"><!-- infolevel="all" infotype="General" -->
<h1>Embedded mapping</h1>
<p><a id="sthref216" name="sthref216"></a><a id="sthref217" name="sthref217"></a><a id="sthref218" name="sthref218"></a><a id="sthref219" name="sthref219"></a>Use an <span class="bold">Embedded Mapping</span> to specify a persistent field or property of an entity whose value is an instance of an embeddable class.</p>
<ol>
<li>
<p>In the <a href="ref_persistence_outline.htm#BABEGGFE">JPA Structure view</a>, right-click the field to map.</p>
</li>
<li>
<p>Select <span class="bold">Map as &gt; Embedded</span>. The <a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a> displays the properties for the selected field.</p>
<div class="figure"><a id="sthref220" name="sthref220"></a>
<p class="titleinfigure">JPA Details, Embedded mapping</p>
<img src="img/jpa_details_embedded.png" alt="PA Details, Element collection mapping" title="PA Details, Element collection mapping" /><br /></div>
<!-- class="figure" --></li>
<li>
<p>Complete each field in the <a href="reference035.htm#CACBJBFD">Embedded Mapping</a> area.</p>
</li>
</ol>
<p>Eclipse adds the following annotations to the field:</p>
<pre xml:space="preserve" class="oac_no_warn">
@Embedded
@AttributeOverride(
    column=@Column(
        table="<span class="italic">&lt;COLUMN_TABLE&gt;</span>", 
        name = "<span class="italic">&lt;COLUMN_NAME&gt;</span>"
    )
)

</pre>
<a id="sthref221" name="sthref221"></a>
<p class="subhead2">Related tasks</p>
<ul>
<li>
<p><a href="task_mapping.htm#BABDGBIJ">Mapping an entity</a></p>
</li>
</ul>
<a id="sthref222" name="sthref222"></a>
<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="sthref223" name="sthref223"></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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