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| <title>Joining Strategy</title> |
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| <meta name="doctitle" content="Joining Strategy" /> |
| <meta name="relnum" content="Release 3.3" /> |
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| <p class="betadraftsubtitle">Beta Draft: 2013-01-03</p> |
| <p><a id="CACIJEGI" name="CACIJEGI"></a></p> |
| <div class="sect3"><!-- infolevel="all" infotype="General" --> |
| <h1><a id="sthref586" name="sthref586"></a><a id="sthref587" name="sthref587"></a>Joining Strategy</h1> |
| <p>Use this area to specify a mapped column for joining an entity association. By default, the mapping is assumed to have a single join.</p> |
| <div class="inftblhruleinformal"> |
| <table class="HRuleInformal" summary="JPA Details view, Type page" dir="ltr" border="1" width="100%" frame="hsides" rules="rows" cellpadding="3" cellspacing="0"> |
| <col width="29%" /> |
| <col width="*" /> |
| <col width="24%" /> |
| <thead> |
| <tr align="left" valign="top"> |
| <th align="left" valign="bottom" id="r1c1-t45">Property</th> |
| <th align="left" valign="bottom" id="r1c2-t45">Description</th> |
| <th align="left" valign="bottom" id="r1c3-t45">Available for Mapping Type</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr align="left" valign="top"> |
| <td align="left" id="r2c1-t45" headers="r1c1-t45"> |
| <p><span class="bold">Mapped by</span></p> |
| </td> |
| <td align="left" headers="r2c1-t45 r1c2-t45"> |
| <p>The field in the database table that "owns" the relationship. This field is required only on the non-owning side of the relationship.</p> |
| </td> |
| <td align="left" headers="r2c1-t45 r1c3-t45"> |
| <p><a href="tasks016.htm#BABEIEGD">Many-to-many mapping</a>, <a href="tasks018.htm#BABHGEBD">One-to-many mapping</a>, and <a href="tasks019.htm#BABFHBCJ">One-to-one mapping</a></p> |
| </td> |
| </tr> |
| <tr align="left" valign="top"> |
| <td align="left" id="r3c1-t45" headers="r1c1-t45"> |
| <p>Attribute</p> |
| </td> |
| <td align="left" headers="r3c1-t45 r1c2-t45"><br /></td> |
| <td align="left" headers="r3c1-t45 r1c3-t45"><br /></td> |
| </tr> |
| <tr align="left" valign="top"> |
| <td align="left" id="r4c1-t45" headers="r1c1-t45"> |
| <p><span class="bold">Primary key join columns</span></p> |
| </td> |
| <td align="left" headers="r4c1-t45 r1c2-t45"><br /></td> |
| <td align="left" headers="r4c1-t45 r1c3-t45"> |
| <p><a href="tasks019.htm#BABFHBCJ">One-to-one mapping</a></p> |
| <br /></td> |
| </tr> |
| <tr align="left" valign="top"> |
| <td align="left" id="r5c1-t45" headers="r1c1-t45"> |
| <p><span class="bold">Join columns</span></p> |
| </td> |
| <td align="left" headers="r5c1-t45 r1c2-t45"> |
| <p><a id="sthref588" name="sthref588"></a><a id="sthref589" name="sthref589"></a>By default, the name is assumed to be the primary tables associated with the entities concatenated with an underscore.</p> |
| <p>Select <span class="bold">Override Default</span>, then Add, Edit, or Remove the join columns.</p> |
| </td> |
| <td align="left" headers="r5c1-t45 r1c3-t45"> |
| <p><a href="tasks017.htm#BABHFAFJ">Many-to-one mapping</a>, <a href="tasks018.htm#BABHGEBD">One-to-many mapping</a>, and <a href="tasks019.htm#BABFHBCJ">One-to-one mapping</a></p> |
| </td> |
| </tr> |
| <tr align="left" valign="top"> |
| <td align="left" id="r6c1-t45" headers="r1c1-t45"> |
| <p><span class="bold">Join table</span></p> |
| </td> |
| <td align="left" headers="r6c1-t45 r1c2-t45"><br /></td> |
| <td align="left" headers="r6c1-t45 r1c3-t45"> |
| <p><a href="tasks016.htm#BABEIEGD">Many-to-many mapping</a>, <a href="tasks017.htm#BABHFAFJ">Many-to-one mapping</a>, <a href="tasks018.htm#BABHGEBD">One-to-many mapping</a>, and <a href="tasks019.htm#BABFHBCJ">One-to-one mapping</a></p> |
| </td> |
| </tr> |
| <tr align="left" valign="top"> |
| <td align="left" id="r7c1-t45" headers="r1c1-t45"> |
| <p>Name</p> |
| </td> |
| <td align="left" headers="r7c1-t45 r1c2-t45"> |
| <p>Name of the join table that contains the foreign key column.You must specify the join table on the owning side.</p> |
| <p>By default, the name is assumed to be the primary tables associated with the entities concatenated with an underscore.</p> |
| </td> |
| <td align="left" headers="r7c1-t45 r1c3-t45"><br /></td> |
| </tr> |
| <tr align="left" valign="top"> |
| <td align="left" id="r8c1-t45" headers="r1c1-t45"> |
| <p>Schema</p> |
| </td> |
| <td align="left" headers="r8c1-t45 r1c2-t45"> |
| <p>Schema of the table</p> |
| </td> |
| <td align="left" headers="r8c1-t45 r1c3-t45"><br /></td> |
| </tr> |
| <tr align="left" valign="top"> |
| <td align="left" id="r9c1-t45" headers="r1c1-t45"> |
| <p>Catalog</p> |
| </td> |
| <td align="left" headers="r9c1-t45 r1c2-t45"> |
| <p>Catalog of the table</p> |
| </td> |
| <td align="left" headers="r9c1-t45 r1c3-t45"><br /></td> |
| </tr> |
| <tr align="left" valign="top"> |
| <td align="left" id="r10c1-t45" headers="r1c1-t45"> |
| <p>Join columns</p> |
| </td> |
| <td align="left" headers="r10c1-t45 r1c2-t45"> |
| <p>The foreign key columns of the join table which reference the primary table of the entity <span class="italic">owning</span> the association. (that is, the <span class="italic">owning</span> side of the association).</p> |
| </td> |
| <td align="left" headers="r10c1-t45 r1c3-t45"><br /></td> |
| </tr> |
| <tr align="left" valign="top"> |
| <td align="left" id="r11c1-t45" headers="r1c1-t45"> |
| <p>Inverse join columns</p> |
| </td> |
| <td align="left" headers="r11c1-t45 r1c2-t45"> |
| <p>The foreign key columns of the join table which reference the primary table of the entity that <span class="italic">does not</span> own the association. (that is, the <span class="italic">inverse</span> side of the association).</p> |
| </td> |
| <td align="left" headers="r11c1-t45 r1c3-t45"><br /></td> |
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