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<title>Converters</title>
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<div class="sect3"><!-- infolevel="all" infotype="General" -->
<h1><a id="sthref579" name="sthref579"></a><a id="sthref580" name="sthref580"></a>Converters</h1>
<p>Use this area to specify a custom converter for modification of the data value(s) during the reading and writing of a mapped attribute.</p>
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<tr align="left" valign="top">
<th align="left" valign="bottom" id="r1c1-t43">Property</th>
<th align="left" valign="bottom" id="r1c2-t43">Description</th>
<th align="left" valign="bottom" id="r1c3-t43">Default</th>
<th align="left" valign="bottom" id="r1c4-t43">Available for Entity&nbsp;Type</th>
</tr>
</thead>
<tbody>
<tr align="left" valign="top">
<td align="left" id="r2c1-t43" headers="r1c1-t43">
<p>Converters</p>
</td>
<td align="left" headers="r2c1-t43 r1c2-t43">
<p>Click Add and use the <a href="ref_add_converter.htm#CIAGCGIJ">Add Converter dialog</a> to create a new converter.</p>
<ul>
<li>
<p>Object Type</p>
</li>
<li>
<p>Type</p>
</li>
<li>
<p>Struct</p>
</li>
<li>
<p>Custom</p>
</li>
</ul>
</td>
<td align="left" headers="r2c1-t43 r1c3-t43"><br /></td>
<td align="left" headers="r2c1-t43 r1c4-t43">
<p><a href="tasks011.htm#BABBABCE">Basic mapping</a>, <a href="tasks012.htm#CIHHJEBJ">Element collection mapping</a>, <a href="tasks015.htm#BABGCBHG">ID mapping</a>, <a href="tasks016.htm#BABEIEGD">Many-to-many mapping</a>, <a href="tasks018.htm#BABHGEBD">One-to-many mapping</a>, and <a href="tasks021.htm#BABHIBII">Version mapping</a></p>
</td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r3c1-t43" headers="r1c1-t43">
<p>Name</p>
</td>
<td align="left" headers="r3c1-t43 r1c2-t43">
<p>Name of the converter.</p>
</td>
<td align="left" headers="r3c1-t43 r1c3-t43"><br /></td>
<td align="left" headers="r3c1-t43 r1c4-t43"><br /></td>
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<td align="left" id="r4c1-t43" headers="r1c1-t43">
<p>Class</p>
</td>
<td align="left" headers="r4c1-t43 r1c2-t43">
<p>Appears for <span class="bold">Custom</span> and <span class="bold">Struct</span> converters only.</p>
</td>
<td align="left" headers="r4c1-t43 r1c3-t43"><br /></td>
<td align="left" headers="r4c1-t43 r1c4-t43"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r5c1-t43" headers="r1c1-t43">
<p>Data type</p>
</td>
<td align="left" headers="r5c1-t43 r1c2-t43">
<p>Appears for <span class="bold">Object Type</span> and <span class="bold">Type</span> converters only.</p>
</td>
<td align="left" headers="r5c1-t43 r1c3-t43"><br /></td>
<td align="left" headers="r5c1-t43 r1c4-t43"><br /></td>
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<tr align="left" valign="top">
<td align="left" id="r6c1-t43" headers="r1c1-t43">
<p>Object type</p>
</td>
<td align="left" headers="r6c1-t43 r1c2-t43">
<p>Appears for <span class="bold">Object Type</span> and <span class="bold">Type</span> converters only.</p>
</td>
<td align="left" headers="r6c1-t43 r1c3-t43"><br /></td>
<td align="left" headers="r6c1-t43 r1c4-t43"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r7c1-t43" headers="r1c1-t43">
<p>Conversion values</p>
</td>
<td align="left" headers="r7c1-t43 r1c2-t43">
<p>Appears for <span class="bold">Object Type</span> converters only.</p>
</td>
<td align="left" headers="r7c1-t43 r1c3-t43"><br /></td>
<td align="left" headers="r7c1-t43 r1c4-t43"><br /></td>
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<p>Default object value</p>
</td>
<td align="left" headers="r8c1-t43 r1c2-t43">
<p>Appears for <span class="bold">Object Type</span> converters only.</p>
</td>
<td align="left" headers="r8c1-t43 r1c3-t43"><br /></td>
<td align="left" headers="r8c1-t43 r1c4-t43"><br /></td>
</tr>
</tbody>
</table>
<br /></div>
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<a id="sthref581" name="sthref581"></a>
<p class="subhead2">Related reference</p>
<ul>
<li>
<p>"Converter" in <span class="italic">Java Persistence API (JPA) Extensions Reference for EclipseLink</span><br />
<code><a href="http://eclipse.org/eclipselink/documentation/2.4/jpa/extensions/a_converter.htm">http://eclipse.org/eclipselink/documentation/2.4/jpa/extensions/a_converter.htm</a></code></p>
</li>
</ul>
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