jpa/plugins/org.eclipse.jpt.doc.user/ref_primary_key.htm - dali/webtools.dali - Git at Google

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 <h1>Primary Key Generation information</h1>
 <p>This table lists the fields available in the <span class="gui-object-title">Primary Key Generation</span> area in JPA Details view for <a href="tasks013.htm#BABGCBHG">ID mapping</a> types.</p>
 <div class="inftblruleinformal">
 <table class="RuleInformal" title="This table describes the options on the Join Columns tab." summary="This table describes the options on the Join Columns tab." dir="ltr" border="1" width="100%" frame="border" rules="all" cellpadding="3" cellspacing="0">
 <col width="26%" />
 <col width="*" />
 <col width="34%" />
 <thead>
 <tr align="left" valign="top">
 <th align="left" valign="bottom" id="r1c1-t19">Property</th>
 <th align="left" valign="bottom" id="r1c2-t19">Description</th>
 <th align="left" valign="bottom" id="r1c3-t19">Default</th>
 </tr>
 </thead>
 <tbody>
 <tr align="left" valign="top">
 <td align="left" id="r2c1-t19" headers="r1c1-t19"><a id="CACBAJBC" name="CACBAJBC"></a>Primary Key Generation</td>
 <td align="left" headers="r2c1-t19 r1c2-t19"><a id="sthref251" name="sthref251"></a><a id="sthref252" name="sthref252"></a>These fields define how the primary key is generated. These fields correspond to the <code>@GeneratedValue</code> annotation.</td>
 <td align="left" headers="r2c1-t19 r1c3-t19">Generated Value</td>
 </tr>
 <tr align="left" valign="top">
 <td align="left" id="r3c1-t19" headers="r1c1-t19"><a id="CACJEEEC" name="CACJEEEC"></a>&nbsp;&nbsp;&nbsp;Strategy</td>
 <td align="left" headers="r3c1-t19 r1c2-t19">
 <ul>
 <li>Auto</li>
 <li>
 <p>Identity &ndash; Values are assigned by the database's <span class="bold">Identity</span> column.</p>
 </li>
 <li>
 <p>Sequence &ndash; Values are assigned by a sequence table (see <a href="#CACFFHEH">Sequence&nbsp;Generator</a>).</p>
 </li>
 <li>
 <p>Table &ndash; Values are assigned by a database table (see <a href="#CACGFEAH">Table Generator</a>).</p>
 </li>
 </ul>
 </td>
 <td align="left" headers="r3c1-t19 r1c3-t19">Auto</td>
 </tr>
 <tr align="left" valign="top">
 <td align="left" id="r4c1-t19" headers="r1c1-t19"><a id="BABEEAHJ" name="BABEEAHJ"></a>&nbsp;&nbsp;Generator Name</td>
 <td align="left" headers="r4c1-t19 r1c2-t19">Unique name of the generated value.</td>
 <td align="left" headers="r4c1-t19 r1c3-t19"><br /></td>
 </tr>
 <tr align="left" valign="top">
 <td align="left" id="r5c1-t19" headers="r1c1-t19"><a id="CACGFEAH" name="CACGFEAH"></a>Table Generator</td>
 <td align="left" headers="r5c1-t19 r1c2-t19">These fields define the database table used for generating the primary key and correspond to the <code>@TableGenerator</code> annotation.
 <p>These fields apply only when <span class="bold">Strategy</span>&nbsp;=&nbsp;<span class="bold">Table</span>.</p>
 </td>
 <td align="left" headers="r5c1-t19 r1c3-t19"><br /></td>
 </tr>
 <tr align="left" valign="top">
 <td align="left" id="r6c1-t19" headers="r1c1-t19">&nbsp;&nbsp;Name</td>
 <td align="left" headers="r6c1-t19 r1c2-t19">Unique name of the generator.</td>
 <td align="left" headers="r6c1-t19 r1c3-t19"><br /></td>
 </tr>
 <tr align="left" valign="top">
 <td align="left" id="r7c1-t19" headers="r1c1-t19">&nbsp;&nbsp;Table</td>
 <td align="left" headers="r7c1-t19 r1c2-t19">Database table that stores the generated ID values.</td>
 <td align="left" headers="r7c1-t19 r1c3-t19"><br /></td>
 </tr>
 <tr align="left" valign="top">
 <td align="left" id="r8c1-t19" headers="r1c1-t19">&nbsp;&nbsp;Primary Key Column</td>
 <td align="left" headers="r8c1-t19 r1c2-t19">The column in the table generator's <span class="bold">Table</span> that contains the primary key.</td>
 <td align="left" headers="r8c1-t19 r1c3-t19"><br /></td>
 </tr>
 <tr align="left" valign="top">
 <td align="left" id="r9c1-t19" headers="r1c1-t19">&nbsp;&nbsp;Value Column</td>
 <td align="left" headers="r9c1-t19 r1c2-t19">The column that stores the generated ID values.</td>
 <td align="left" headers="r9c1-t19 r1c3-t19"><br /></td>
 </tr>
 <tr align="left" valign="top">
 <td align="left" id="r10c1-t19" headers="r1c1-t19">&nbsp;&nbsp;Primary Key Column Value</td>
 <td align="left" headers="r10c1-t19 r1c2-t19">The value for the <span class="bold">Primary Key Column</span> in the generator table.</td>
 <td align="left" headers="r10c1-t19 r1c3-t19"><br /></td>
 </tr>
 <tr align="left" valign="top">
 <td align="left" id="r11c1-t19" headers="r1c1-t19"><a id="CACFFHEH" name="CACFFHEH"></a>Sequence&nbsp;Generator</td>
 <td align="left" headers="r11c1-t19 r1c2-t19"><a id="sthref253" name="sthref253"></a><a id="sthref254" name="sthref254"></a>These fields define the specific sequence used for generating the primary key and correspond to the <code>@SequenceGenerator</code> annotation.
 <p>These fields apply only when <span class="bold">Strategy</span> = <span class="bold">Sequence</span>.</p>
 </td>
 <td align="left" headers="r11c1-t19 r1c3-t19"><br /></td>
 </tr>
 <tr align="left" valign="top">
 <td align="left" id="r12c1-t19" headers="r1c1-t19">&nbsp;&nbsp;Name</td>
 <td align="left" headers="r12c1-t19 r1c2-t19">Name of the sequence table to use for defining primary key values.</td>
 <td align="left" headers="r12c1-t19 r1c3-t19"><br /></td>
 </tr>
 <tr align="left" valign="top">
 <td align="left" id="r13c1-t19" headers="r1c1-t19">&nbsp;&nbsp;Sequence</td>
 <td align="left" headers="r13c1-t19 r1c2-t19">Unique name of the sequence.</td>
 <td align="left" headers="r13c1-t19 r1c3-t19"><br /></td>
 </tr>
 </tbody>
 </table>
 <br /></div>
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 <p>&nbsp;</p>
 <img src="img/ngrelt.png" alt="Related task" title="Related task" /><br />
 <br />
 <a href="tasks013.htm#BABGCBHG">ID mapping</a>
 <p>&nbsp;</p>
 <img src="img/ngrelr.png" alt="Related task" title="Related task" /><br />
 <br />
 <a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a></div>
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	<div class="sect3"><!-- infolevel="all" infotype="General" -->
	<h1>Primary Key Generation information</h1>
	<p>This table lists the fields available in the <span class="gui-object-title">Primary Key Generation</span> area in JPA Details view for <a href="tasks013.htm#BABGCBHG">ID mapping</a> types.</p>
	<div class="inftblruleinformal">
	<table class="RuleInformal" title="This table describes the options on the Join Columns tab." summary="This table describes the options on the Join Columns tab." dir="ltr" border="1" width="100%" frame="border" rules="all" cellpadding="3" cellspacing="0">
	<col width="26%" />
	<col width="*" />
	<col width="34%" />
	<thead>
	<tr align="left" valign="top">
	<th align="left" valign="bottom" id="r1c1-t19">Property</th>
	<th align="left" valign="bottom" id="r1c2-t19">Description</th>
	<th align="left" valign="bottom" id="r1c3-t19">Default</th>
	</tr>
	</thead>
	<tbody>
	<tr align="left" valign="top">
	<td align="left" id="r2c1-t19" headers="r1c1-t19"><a id="CACBAJBC" name="CACBAJBC"></a>Primary Key Generation</td>
	<td align="left" headers="r2c1-t19 r1c2-t19"><a id="sthref251" name="sthref251"></a><a id="sthref252" name="sthref252"></a>These fields define how the primary key is generated. These fields correspond to the <code>@GeneratedValue</code> annotation.</td>
	<td align="left" headers="r2c1-t19 r1c3-t19">Generated Value</td>
	</tr>
	<tr align="left" valign="top">
	<td align="left" id="r3c1-t19" headers="r1c1-t19"><a id="CACJEEEC" name="CACJEEEC"></a>   Strategy</td>
	<td align="left" headers="r3c1-t19 r1c2-t19">
	<ul>
	<li>Auto</li>
	<li>
	<p>Identity – Values are assigned by the database's <span class="bold">Identity</span> column.</p>
	</li>
	<li>
	<p>Sequence – Values are assigned by a sequence table (see <a href="#CACFFHEH">Sequence Generator</a>).</p>
	</li>
	<li>
	<p>Table – Values are assigned by a database table (see <a href="#CACGFEAH">Table Generator</a>).</p>
	</li>
	</ul>
	</td>
	<td align="left" headers="r3c1-t19 r1c3-t19">Auto</td>
	</tr>
	<tr align="left" valign="top">
	<td align="left" id="r4c1-t19" headers="r1c1-t19"><a id="BABEEAHJ" name="BABEEAHJ"></a>  Generator Name</td>
	<td align="left" headers="r4c1-t19 r1c2-t19">Unique name of the generated value.</td>
	<td align="left" headers="r4c1-t19 r1c3-t19"><br /></td>
	</tr>
	<tr align="left" valign="top">
	<td align="left" id="r5c1-t19" headers="r1c1-t19"><a id="CACGFEAH" name="CACGFEAH"></a>Table Generator</td>
	<td align="left" headers="r5c1-t19 r1c2-t19">These fields define the database table used for generating the primary key and correspond to the <code>@TableGenerator</code> annotation.
	<p>These fields apply only when <span class="bold">Strategy</span> = <span class="bold">Table</span>.</p>
	</td>
	<td align="left" headers="r5c1-t19 r1c3-t19"><br /></td>
	</tr>
	<tr align="left" valign="top">
	<td align="left" id="r6c1-t19" headers="r1c1-t19">  Name</td>
	<td align="left" headers="r6c1-t19 r1c2-t19">Unique name of the generator.</td>
	<td align="left" headers="r6c1-t19 r1c3-t19"><br /></td>
	</tr>
	<tr align="left" valign="top">
	<td align="left" id="r7c1-t19" headers="r1c1-t19">  Table</td>
	<td align="left" headers="r7c1-t19 r1c2-t19">Database table that stores the generated ID values.</td>
	<td align="left" headers="r7c1-t19 r1c3-t19"><br /></td>
	</tr>
	<tr align="left" valign="top">
	<td align="left" id="r8c1-t19" headers="r1c1-t19">  Primary Key Column</td>
	<td align="left" headers="r8c1-t19 r1c2-t19">The column in the table generator's <span class="bold">Table</span> that contains the primary key.</td>
	<td align="left" headers="r8c1-t19 r1c3-t19"><br /></td>
	</tr>
	<tr align="left" valign="top">
	<td align="left" id="r9c1-t19" headers="r1c1-t19">  Value Column</td>
	<td align="left" headers="r9c1-t19 r1c2-t19">The column that stores the generated ID values.</td>
	<td align="left" headers="r9c1-t19 r1c3-t19"><br /></td>
	</tr>
	<tr align="left" valign="top">
	<td align="left" id="r10c1-t19" headers="r1c1-t19">  Primary Key Column Value</td>
	<td align="left" headers="r10c1-t19 r1c2-t19">The value for the <span class="bold">Primary Key Column</span> in the generator table.</td>
	<td align="left" headers="r10c1-t19 r1c3-t19"><br /></td>
	</tr>
	<tr align="left" valign="top">
	<td align="left" id="r11c1-t19" headers="r1c1-t19"><a id="CACFFHEH" name="CACFFHEH"></a>Sequence Generator</td>
	<td align="left" headers="r11c1-t19 r1c2-t19"><a id="sthref253" name="sthref253"></a><a id="sthref254" name="sthref254"></a>These fields define the specific sequence used for generating the primary key and correspond to the <code>@SequenceGenerator</code> annotation.
	<p>These fields apply only when <span class="bold">Strategy</span> = <span class="bold">Sequence</span>.</p>
	</td>
	<td align="left" headers="r11c1-t19 r1c3-t19"><br /></td>
	</tr>
	<tr align="left" valign="top">
	<td align="left" id="r12c1-t19" headers="r1c1-t19">  Name</td>
	<td align="left" headers="r12c1-t19 r1c2-t19">Name of the sequence table to use for defining primary key values.</td>
	<td align="left" headers="r12c1-t19 r1c3-t19"><br /></td>
	</tr>
	<tr align="left" valign="top">
	<td align="left" id="r13c1-t19" headers="r1c1-t19">  Sequence</td>
	<td align="left" headers="r13c1-t19 r1c2-t19">Unique name of the sequence.</td>
	<td align="left" headers="r13c1-t19 r1c3-t19"><br /></td>
	</tr>
	</tbody>
	</table>
	<br /></div>
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	<p> </p>
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	<a href="tasks013.htm#BABGCBHG">ID mapping</a>
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	<br />
	<a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a></div>
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