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| Release 2.4</div></td> |
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| <h2 class="refsect1"><font face="arial, helvetica, sans-serif" color="#330099">@Structure</font></h2> |
| <p>Use <code>@Structure</code> on a field/method to define a <code>StructureMapping</code> to an embedded <code>Struct</code> type. The target Embeddable must be mapped using the Struct annotation.</p> |
| <a id="sthref378" name="sthref378"></a> |
| <p><strong><br /><span class="refsubsect">Annotation Elements</span></strong></p> |
| <p>This annotation contains no elements.</p> |
| <a id="sthref379" name="sthref379"></a> |
| <p><strong><br /><span class="refsubsect">Usage</span></strong></p> |
| <p>Struct types are extended object-relational data-types supported by some databases. Struct types are user define types in the database such as <code>OBJECT</code> types on Oracle. Structs can normally contains Arrays (<code>VARRAY</code>) or other Struct types, and can be stored in a column or a table.</p> |
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| <p><strong><br /><span class="refsubsect">Examples</span></strong></p> |
| <p><a href="#CACDBBII">Example 2-108</a> shows how to use the <code>@Structure</code> annotation. See <a href="a_struct.htm#CACCGJAJ">Example 2-103</a> to an example of using <code>@Struct</code> to map the target.</p> |
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| <p><strong><em><font face="arial, helvetica, sans-serif">Example 2-108 Using @Structure Annotation</font></em></strong></p> |
| <pre xml:space="preserve" class="oac_no_warn"> |
| @Structure |
| protected Address address; |
| |
| </pre></div> |
| <!-- class="example" --> |
| <p>You can also define structure mappings in the <code>eclipselink-orm.xml</code> file by using the <code><structure></code> element.</p> |
| <div class="example"><a id="TLJPA554" name="TLJPA554"></a><a id="sthref381" name="sthref381"></a> |
| <p><strong><em><font face="arial, helvetica, sans-serif">Example 2-109 Using <structure> XML</font></em></strong></p> |
| <pre xml:space="preserve" class="oac_no_warn"> |
| <structure name="address"/> |
| |
| </pre></div> |
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| <p><strong><br /><span class="refsubsect">See Also</span></strong></p> |
| <p>For more information, see:</p> |
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| <p><a href="a_struct.htm#CBBDCAHG">"@Struct"</a></p> |
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