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<div class="sect3"><!-- infolevel="all" infotype="General" -->
<h1>Inheritance information</h1>
<p><a id="sthref196" name="sthref196"></a><a id="sthref197" name="sthref197"></a>This table lists the fields available on the <span class="gui-object-title">Inheritance</span> area in the <span class="gui-object-title">Java Details</span> view for each entity type.</p>
<div class="inftblruleinformal">
<table class="RuleInformal" title="This table describes the options on the Persistence Properties view, Inheritance tab." summary="This table describes the options on the Persistence Properties view, Inheritance tab." dir="ltr" border="1" width="100%" frame="border" rules="all" cellpadding="3" cellspacing="0">
<thead>
<tr align="left" valign="top">
<th align="left" valign="bottom" id="r1c1-t6">Property</th>
<th align="left" valign="bottom" id="r1c2-t6">Description</th>
<th align="left" valign="bottom" id="r1c3-t6">Default</th>
</tr>
</thead>
<tbody>
<tr align="left" valign="top">
<td align="left" id="r2c1-t6" headers="r1c1-t6">Strategy</td>
<td align="left" headers="r2c1-t6 r1c2-t6">Specify the strategy to use when mapping a class or class hierarchy:
<ul>
<li>
<p>Single table &ndash; All classes in the hierarchy are mapped to a single table.</p>
</li>
<li>
<p>Joined &ndash; The root of the hierarchy is mapped to a single table; each child maps to its own table.</p>
</li>
<li>
<p>Table per class &ndash; Each class is mapped to a separate table.</p>
</li>
</ul>
</td>
<td align="left" headers="r2c1-t6 r1c3-t6">Single table</td>
</tr>
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<td align="left" id="r3c1-t6" headers="r1c1-t6">Discriminator Column</td>
<td align="left" headers="r3c1-t6 r1c2-t6">Use to specify the name of the discriminator column when using a <span class="bold">Single</span> or <span class="bold">Joined</span> inheritance strategy.</td>
<td align="left" headers="r3c1-t6 r1c3-t6"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r4c1-t6" headers="r1c1-t6">Discriminator Type</td>
<td align="left" headers="r4c1-t6 r1c2-t6">Set this field to set the discriminator type to <code>Char</code> or <code>Integer</code> (instead of its default: <code>String</code>). The <span class="bold">Discriminator Value</span> must conform to this type.</td>
<td align="left" headers="r4c1-t6 r1c3-t6">String</td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r5c1-t6" headers="r1c1-t6">Discriminator Value</td>
<td align="left" headers="r5c1-t6 r1c2-t6">Specify the discriminator value used to differentiate an entity in this inheritance hierarchy. The value must conform to the specified <span class="bold">Discriminator Type</span>.</td>
<td align="left" headers="r5c1-t6 r1c3-t6"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r6c1-t6" headers="r1c1-t6">Primary Key Join Columns</td>
<td align="left" headers="r6c1-t6 r1c2-t6">Use to override the default primary key join columns. Select <span class="bold">Override Default</span>, then click <span class="bold">Add</span> to select new Join Column.
<p>This field corresponds with @PrimaryKeyJoinColumn annotation.</p>
</td>
<td align="left" headers="r6c1-t6 r1c3-t6"><br /></td>
</tr>
</tbody>
</table>
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<p>&nbsp;</p>
<img src="img/ngrelt.png" alt="Related task" title="Related task" /><br />
<br />
<a href="task_inheritance.htm#CIHCCCJD">Specifying entity inheritance</a><br />
<a href="task_add_persistence.htm#BABHICAI">Adding persistence to a class</a>
<p>&nbsp;</p>
<img src="img/ngrelr.png" alt="Related reference" title="Related reference" /><br />
<br />
<a href="ref_persistence_prop_view.htm#BABFAEBB">JPA Details view (for entities)</a></div>
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