blob: 634a50bc23cd91981161b7e1e1686eeba05af053 (
plain) (
tree)
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<!-- Run date = January 22, 2008 9:11:15 -->
<meta name="OAC_IGNORE_SKIP_NAV" content="true" />
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii" />
<title>Create version mappings</title>
<meta http-equiv="Content-Style-Type" content="text/css" />
<meta http-equiv="Content-Script-Type" content="text/javascript" />
<meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.0" />
<meta name="date" content="2005-07-10T12:57:20+08:00" />
<meta name="robots" content="noarchive" />
<meta name="doctitle" content="Create version mappings" />
<meta name="relnum" content="M5 - Release 2.0.0" />
<meta name="partnum" content="" />
<link rel="copyright" href="dcommon/html/cpyr.htm" title="Copyright" type="text/html" />
<link rel="stylesheet" href="dcommon/css/blafdoc.css" title="Oracle BLAFDoc" type="text/css" />
<link rel="start" href="../../index.htm" title="Home" type="text/html" />
<link rel="contents" href="toc.htm" title="Contents" type="text/html" />
</head>
<body>
<p><a id="BABIDFFG" name="BABIDFFG"></a></p>
<div class="sect3"><!-- infolevel="all" infotype="General" -->
<h1>Create version mappings</h1>
<p>Use a <span class="bold">Version Mapping</span> to specify the database field used by a persistent entity for optimistic locking.</p>
<ol start="1">
<li>
<p>Select the <span class="bold">Employee</span> entity in the Package Explorer view.</p>
</li>
<li>
<p>In the <a href="ref_persistence_outline.htm#BABEGGFE">JPA Structure view</a>, select the <span class="bold">version</span> field of the <span class="bold">Employee</span> entity. The <a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a> displays the properties for the field.</p>
</li>
<li>
<p>In the <span class="gui-object-title">Map As</span> field, select <span class="gui-object-action">Version</span>.</p>
<div class="figure"><a id="sthref39" name="sthref39"></a>
<p class="titleinfigure">Version Mapping for version</p>
<img src="img/persistence_view_version.png" alt="JPA Details view for the version field." title="JPA Details view for the version field." /><br /></div>
<!-- class="figure" --></li>
</ol>
<p>Dali automatically selects the Version column in the EMPLOYEE database table. In the JPA Structure, the <span class="bold">Version</span> field is identified as a version mapping, as shown in the following figure:</p>
<div class="figure"><a id="sthref40" name="sthref40"></a>
<p class="titleinfigure">JPA Structure for Employee Entity</p>
<img src="img/persistence_outline_version.png" alt="The version attribute of the Employee entity in the JPA Structure view." title="The version attribute of the Employee entity in the JPA Structure view." /><br /></div>
<!-- class="figure" -->
<p>Congratulations! All of the entities have been successfully mapped.</p>
</div>
<!-- class="sect3" -->
<!-- class="sect2" -->
<!-- class="sect1" -->
<!-- Start Footer -->
<div class="footer">
<table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td align="left" width="86%"><a href="dcommon/html/cpyr.htm"><span class="copyrightlogo">Copyright © 2006, 2008, Oracle. All rights reserved.</span></a></td>
</tr>
</table>
</div>
<!-- class="footer" -->
</body>
</html>
|
