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| <title>Converters</title> |
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| <meta name="doctitle" content="Converters" /> |
| <meta name="relnum" content="Release 3.3" /> |
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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> |
| <div class="inftblhruleinformalwide"> |
| <table class="HRuleInformalWide" title="JPA Details view, Advanced page" summary="JPA Details view, Advanced page" dir="ltr" border="1" width="100%" frame="hsides" rules="rows" cellpadding="3" cellspacing="0"> |
| <col width="16%" /> |
| <col width="*" /> |
| <col width="17%" /> |
| <col width="25%" /> |
| <thead> |
| <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 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> |
| </tr> |
| <tr align="left" valign="top"> |
| <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> |
| </tr> |
| <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> |
| </tr> |
| <tr align="left" valign="top"> |
| <td align="left" id="r8c1-t43" headers="r1c1-t43"> |
| <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> |
| <!-- class="inftblhruleinformalwide" --> |
| <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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