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| 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/tasks019.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/tasks019.htm')
| -rw-r--r-- | jpa/plugins/org.eclipse.jpt.doc.user/tasks019.htm | 142 |
1 files changed, 52 insertions, 90 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.doc.user/tasks019.htm b/jpa/plugins/org.eclipse.jpt.doc.user/tasks019.htm index 9dde2935bc..3ebdbf7825 100644 --- a/jpa/plugins/org.eclipse.jpt.doc.user/tasks019.htm +++ b/jpa/plugins/org.eclipse.jpt.doc.user/tasks019.htm @@ -2,129 +2,91 @@ "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>Version 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>Generating entities from tables</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="Version mapping" /> -<meta name="relnum" content="Release 2.0" /> +<meta name="doctitle" content="Generating entities from tables" /> +<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="BABHIBII" name="BABHIBII"></a></p> -<div class="sect2"><!-- infolevel="all" infotype="General" --> -<h1>Version mapping</h1> -<p><a id="sthref137" name="sthref137"></a><a id="sthref138" name="sthref138"></a><a id="sthref139" name="sthref139"></a><a id="sthref140" name="sthref140"></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> +<p><a id="BABBAGFI" name="BABBAGFI"></a></p> +<div class="sect1"> +<h1>Generating entities from tables</h1> +<p><a id="sthref157" name="sthref157"></a><a id="sthref158" name="sthref158"></a>Use this procedure to generate Java persistent entities from database tables. You must create a JPA project and establish a database connection <span class="italic">before</span> generating persistent entities. See <a href="task_create_new_project.htm#CIHHEJCJ">"Creating a new JPA project"</a> for more information.<a id="sthref159" name="sthref159"></a><a id="sthref160" name="sthref160"></a></p> +<ol> <li> -<p><code>int</code></p> -</li> +<p>Right-click the JPA project in the <span class="gui-object-title">Project Explorer</span> and select <span class="gui-object-action">JPA Tools > Generate Entities from Tables</span>.</p> +<div class="figure"><a id="sthref161" name="sthref161"></a> +<p class="titleinfigure">Generating Entities</p> +<img src="img/generate_entities.png" alt="Using the JPA Tools > Generate Entities menu option." title="Using the JPA Tools > Generate Entities menu option." /><br /></div> +<!-- class="figure" --></li> <li> -<p><code>Integer</code></p> -</li> +<p>On the <a href="ref_selectTables.htm#CIAHCGEE">Select Tables</a> page, select your database connection and schema.</p> +<p>To create a new database connection, click <span class="bold">Add connection</span>.</p> +<p>If you are not currently connected to the database, the Database Connection page appears. Select your database connection and schema, and click <span class="bold">Reconnect</span>.</p> +<div class="figure"><a id="sthref162" name="sthref162"></a> +<p class="titleinfigure">Select Tables</p> +<img src="img/select_tables.png" alt="" title="" /><br /></div> +<!-- class="figure" --></li> <li> -<p><code>short, Short</code></p> +<p>After selecting a schema, select the tables from which to generate Java persistent entities and click <span class="bold">Next</span>.</p> </li> <li> -<p><code>long, Long</code></p> -</li> +<p>On the <a href="ref_tableAssociations.htm#CIACDICB">Table Associations</a> page, select the associations to generate. You can specify to generate specific references for each association.</p> +<p>To create a new association, click <span class="bold">Add Association</span>. Use the <a href="ref_create_new_association_wizard.htm#CIAFGHIF">Create New Association</a> wizard to define the association.</p> +<div class="figure"><a id="sthref163" name="sthref163"></a> +<p class="titleinfigure">Table Associations</p> +<img src="img/table_associations.png" alt="" title="" /><br /></div> +<!-- class="figure" --></li> <li> -<p><code>Timestamp</code></p> +<p>After editing the table associations, click <span class="bold">Next</span>.</p> </li> -</ul> -<p>To create a version mapping:</p> -<ol start="1"> <li> -<p>In the <a href="ref_persistence_outline.htm#BABEGGFE">JPA Structure view</a>, select the field to map.</p> -</li> +<p>On the <a href="ref_customizeDefaultEntityGeneration.htm#CIAEJDBE">Customize Default Entity Generation</a> page, customize the mapping and class information for each generated entity.</p> +<div class="figure"><a id="sthref164" name="sthref164"></a> +<p class="titleinfigure">Customize Default Entity Generation</p> +<img src="img/customize_default_entity_generation.png" alt="" title="" /><br /></div> +<!-- class="figure" --></li> <li> -<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> +<p>After customizing the mappings, click <span class="bold">Next</span>.</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"> -<thead> -<tr align="left" valign="top"> -<th align="left" valign="bottom" id="r1c1-t28">Property</th> -<th align="left" valign="bottom" id="r1c2-t28">Description</th> -<th align="left" valign="bottom" id="r1c3-t28">Default</th> -</tr> -</thead> -<tbody> -<tr align="left" valign="top"> -<td align="left" id="r2c1-t28" headers="r1c1-t28">Mapped Entity Hyperlink</td> -<td align="left" headers="r2c1-t28 r1c2-t28">Defines the mapping as Version. This corresponds to the <code>@Version</code> annotation.</td> -<td align="left" headers="r2c1-t28 r1c3-t28">Version</td> -</tr> -<tr align="left" valign="top"> -<td align="left" id="r3c1-t28" headers="r1c1-t28">Column</td> -<td align="left" headers="r3c1-t28 r1c2-t28">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-t28 r1c3-t28">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-t28" headers="r1c1-t28">Table</td> -<td align="left" headers="r4c1-t28 r1c2-t28">Name of the database table. This must be the primary table associated with the attribute's entity.</td> -<td align="left" headers="r4c1-t28 r1c3-t28"><br /></td> -</tr> -<tr align="left" valign="top"> -<td align="left" id="r5c1-t28" headers="r1c1-t28">Temporal</td> -<td align="left" headers="r5c1-t28 r1c2-t28">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-t28 r1c3-t28"><br /></td> -</tr> -</tbody> -</table> -<br /></div> -<!-- class="inftblruleinformal" --></li> +<p>On the <a href="ref_customizIndividualEntities.htm#CIACIGEE">Customize Individual Entities</a> page, review the mapping and class information for each entity that will be generated, then click <span class="bold">Finish</span>.</p> +<div class="figure"><a id="sthref165" name="sthref165"></a> +<p class="titleinfigure">Customize Individual Entities</p> +<img src="img/customize_individual_entities.png" alt="" title="" /><br /></div> +<!-- class="figure" --></li> </ol> -<p>Eclipse adds the following annotations to the field:</p> -<pre xml:space="preserve" class="oac_no_warn"> -@Version -@Column(table="<span class="italic"><COLUMN_TABLE></span>", name="<<span class="italic">COLUMN_NAME</span>>") - -</pre> +<p>Eclipse creates a Java persistent entity for each database table. Each entity contains fields based on the table's columns. Eclipse will also generate entity relationships (such as one-to-one) based on the table constraints. <a href="#CIHJIJJC">Figure: Generating Entities from Tables</a> illustrates how Eclipse generates entities from tables.</p> +<div class="figure"><a id="CIHJIJJC" name="CIHJIJJC"></a> +<p class="titleinfigure">Generating Entities from Tables</p> +<img src="img/table_entity.png" alt="This figure shows the EMPLOYEE and ADDRESS entities generated from database tables." title="This figure shows the EMPLOYEE and ADDRESS entities generated from database tables." /><br /></div> +<!-- class="figure" --> <p> </p> <img src="img/ngrelt.png" alt="Related task" title="Related task" /><br /> -<br /> -<a href="task_mapping.htm#BABDGBIJ">Mapping an entity</a> +<p><a href="task_create_new_project.htm#CIHHEJCJ">Creating a new JPA project</a></p> <p> </p> <img src="img/ngrelr.png" alt="Related reference" title="Related reference" /><br /> <br /> -<a href="ref_persistence_outline.htm#BABEGGFE">JPA Structure view</a><br /> -<a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a> -<p> </p> -<img src="img/ngrelc.png" alt="Related concept" title="Related concept" /><br /> -<br /> -<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" --> +<a href="ref_project_properties.htm#BABJHBCI">Project Properties page – Java Persistence Options</a></div> <!-- 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> |