diff options
author | nhauge | 2009-05-01 16:46:16 +0000 |
---|---|---|
committer | nhauge | 2009-05-01 16:46:16 +0000 |
commit | 90f3473eab3ed00defabb45147d9b8f2c1dbeb9d (patch) | |
tree | 8d7f7268303fcfa830a027f05cccfbbc61cb32bf /jpa/plugins/org.eclipse.jpt.doc.user/tasks018.htm | |
parent | 97b0550847a242f73d11c3bcfeb8edec8939d9b8 (diff) | |
download | webtools.dali-90f3473eab3ed00defabb45147d9b8f2c1dbeb9d.tar.gz webtools.dali-90f3473eab3ed00defabb45147d9b8f2c1dbeb9d.tar.xz webtools.dali-90f3473eab3ed00defabb45147d9b8f2c1dbeb9d.zip |
261107 - Update docs for 2.2 release.
Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.doc.user/tasks018.htm')
-rw-r--r-- | jpa/plugins/org.eclipse.jpt.doc.user/tasks018.htm | 104 |
1 files changed, 88 insertions, 16 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.doc.user/tasks018.htm b/jpa/plugins/org.eclipse.jpt.doc.user/tasks018.htm index 59bbb35eda..511bd392a7 100644 --- a/jpa/plugins/org.eclipse.jpt.doc.user/tasks018.htm +++ b/jpa/plugins/org.eclipse.jpt.doc.user/tasks018.htm @@ -2,40 +2,108 @@ "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 = July 23, 2008 8:59:48 --> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /> -<title>Transient mapping</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" /> +<title>Version mapping</title> +<meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1.1 Build 004" /> +<meta name="date" content="2009-05-01T8:12:47Z" /> <meta name="robots" content="noarchive" /> -<meta name="doctitle" content="Transient mapping" /> -<meta name="relnum" content="Release 2.0" /> +<meta name="doctitle" content="Version mapping" /> +<meta name="relnum" content="Release 2.2" /> <meta name="copyright" content="Copyright (c) 2000, 2008 oracle . All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html. Contributors: Oracle - initial API and implementation" /> <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" /> -<!-- start--> <!-- contents --> </head> <body> -<p><a id="BABHFHEI" name="BABHFHEI"></a></p> +<p><a id="BABHIBII" name="BABHIBII"></a></p> <div class="sect2"><!-- infolevel="all" infotype="General" --> -<h1>Transient mapping</h1> -<p><a id="sthref133" name="sthref133"></a><a id="sthref134" name="sthref134"></a><a id="sthref135" name="sthref135"></a><a id="sthref136" name="sthref136"></a>Use the Transient Mapping to specify a field of the entity class that <span class="italic">is not</span> persistent.</p> -<p>To create a transient mapping:</p> -<ol start="1"> +<h1>Version mapping</h1> +<p><a id="sthref153" name="sthref153"></a><a id="sthref154" name="sthref154"></a><a id="sthref155" name="sthref155"></a><a id="sthref156" name="sthref156"></a>Use a <span class="bold">Version Mapping</span> to specify the field used for optimistic locking. If the entity is associated with multiple tables, you should use a version mapping only with the primary table. You should have only a single version mapping per persistent entity. Version mappings may be used only with the following attribute types:</p> +<ul> +<li> +<p><code>int</code></p> +</li> +<li> +<p><code>Integer</code></p> +</li> +<li> +<p><code>short, Short</code></p> +</li> +<li> +<p><code>long, Long</code></p> +</li> +<li> +<p><code>Timestamp</code></p> +</li> +</ul> +<p>To create a version mapping:</p> +<ol> <li> <p>In the <a href="ref_persistence_outline.htm#BABEGGFE">JPA Structure view</a>, select the field to map.</p> </li> <li> -<p>Right-click the field and then select <span class="bold">Map As Transient</span>. The <a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a> displays the properties for the selected.</p> +<p>Right-click the field and then select <span class="bold">Map As > Version</span>. The <a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a> displays the properties for the selected.</p> </li> +<li> +<p>Use this table to complete the remaining fields in the JPA Details view.</p> +<div class="inftblruleinformal"> +<table class="RuleInformal" title="This table lists the fields in the Persistence Properties view for this mapping." summary="This table lists the fields in the Persistence Properties view for this mapping." dir="ltr" border="1" width="100%" frame="border" rules="all" cellpadding="3" cellspacing="0"> +<col width="19%" /> +<col width="*" /> +<col width="38%" /> +<thead> +<tr align="left" valign="top"> +<th align="left" valign="bottom" id="r1c1-t27">Property</th> +<th align="left" valign="bottom" id="r1c2-t27">Description</th> +<th align="left" valign="bottom" id="r1c3-t27">Default</th> +</tr> +</thead> +<tbody> +<tr align="left" valign="top"> +<td align="left" id="r2c1-t27" headers="r1c1-t27">Mapped Entity Hyperlink</td> +<td align="left" headers="r2c1-t27 r1c2-t27">Defines the mapping as Version. This corresponds to the <code>@Version</code> annotation.</td> +<td align="left" headers="r2c1-t27 r1c3-t27">Version</td> +</tr> +<tr align="left" valign="top"> +<td align="left" id="r3c1-t27" headers="r1c1-t27">Column</td> +<td align="left" headers="r3c1-t27 r1c2-t27">The database column mapped to the entity attribute. See <a href="ref_mapping_general.htm#CACGCBHB">"Column"</a> for details.</td> +<td align="left" headers="r3c1-t27 r1c3-t27">By default, the Column is assumed to be named identically to the attribute and always included in the <code>INSERT</code> and <code>UPDATE</code> statements.</td> +</tr> +<tr align="left" valign="top"> +<td align="left" id="r4c1-t27" headers="r1c1-t27">Table</td> +<td align="left" headers="r4c1-t27 r1c2-t27">Name of the database table. This must be the primary table associated with the attribute's entity.</td> +<td align="left" headers="r4c1-t27 r1c3-t27"><br /></td> +</tr> +<tr align="left" valign="top"> +<td align="left" id="r5c1-t27" headers="r1c1-t27">Temporal</td> +<td align="left" headers="r5c1-t27 r1c2-t27">Specifies the type of data. See <a href="ref_mapping_general.htm#CACEAJGD">"Temporal"</a> for details. +<ul> +<li> +<p>Date</p> +</li> +<li> +<p>Time</p> +</li> +<li> +<p>Timestamp</p> +</li> +</ul> +</td> +<td align="left" headers="r5c1-t27 r1c3-t27"><br /></td> +</tr> +</tbody> +</table> +<br /></div> +<!-- class="inftblruleinformal" --></li> </ol> -<p>Eclipse adds the following annotation to the field:</p> +<p>Eclipse adds the following annotations to the field:</p> <pre xml:space="preserve" class="oac_no_warn"> -@Transient +@Version +@Column(table="<span class="italic"><COLUMN_TABLE></span>", name="<<span class="italic">COLUMN_NAME</span>>") + </pre> <p> </p> <img src="img/ngrelt.png" alt="Related task" title="Related task" /><br /> @@ -52,11 +120,15 @@ <a href="concept_mapping.htm#BABBDJFI">Understanding OR mappings</a><br /> <a href="concepts001.htm#BABBGFJG">Understanding EJB 3.0 Java Persistence API</a></div> <!-- class="sect2" --> +<!-- class="sect1" --> <!-- Start Footer --> <div class="footer"> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> +<col width="86%" /> +<col width="*" /> <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> +<td align="left"><span class="copyrightlogo">Copyright © 2006, 2009, Oracle and/or its affiliates. All rights reserved.</span><br /> +<a href="dcommon/html/cpyr.htm"><span class="copyrightlogo">Legal Notices</span></a></td> </tr> </table> </div> |