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| author | nhauge | 2007-06-20 03:29:05 +0000 |
|---|---|---|
| committer | nhauge | 2007-06-20 03:29:05 +0000 |
| commit | ebee3d00395d2dcf6137edf82f864c2e3a62657e (patch) | |
| tree | 64c253196a15376f3564c3337ddaa1bae6b93136 /jpa/plugins/org.eclipse.jpt.doc.user/tasks013.htm | |
| parent | abb3357f38106813a5a171bbefdf37f569386a17 (diff) | |
| download | webtools.dali-200706190000.tar.gz webtools.dali-200706190000.tar.xz webtools.dali-200706190000.zip | |
This commit was manufactured by cvs2svn to create tag 'v200706190000'.v200706190000
Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.doc.user/tasks013.htm')
| -rw-r--r-- | jpa/plugins/org.eclipse.jpt.doc.user/tasks013.htm | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.doc.user/tasks013.htm b/jpa/plugins/org.eclipse.jpt.doc.user/tasks013.htm deleted file mode 100644 index 61a72af99b..0000000000 --- a/jpa/plugins/org.eclipse.jpt.doc.user/tasks013.htm +++ /dev/null @@ -1,169 +0,0 @@ -<!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 = May 21, 2007 6:35:55 --> -<meta name="OAC_IGNORE_SKIP_NAV" content="true" /> -<title>One-to-many mapping</title> -<meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /> -<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 - Version 4.5.3 Build 02" /> -<meta name="date" content="2005-07-10T12:57:20+08:00" /> -<meta name="robots" content="all" scheme="http://www.robotstxt.org/" /> -<meta name="doctitle" content="One-to-many mapping" /> -<meta name="relnum" content="Release 1.0.0" /> -<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="BABHGEBD" name="BABHGEBD"></a></p> -<div class="sect2"><!-- infolevel="all" infotype="General" --> -<table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> -<tr valign="bottom"> -<td align="left" width="86%"> -<h1>One-to-many mapping</h1> -</td> -</tr> -</table> -<p><a id="sthref140" name="sthref140"></a><a id="sthref141" name="sthref141"></a><a id="sthref142" name="sthref142"></a><a id="sthref143" name="sthref143"></a>Use a <span class="bold">One-to-Many Mapping</span> to define a relationship with one-to-many multiplicity.</p> -<ol type="1" start="1"> -<li> -<p>In the <a href="ref_persistence_outline.htm#BABEGGFE">JPA Structure view</a>, select the field to map. 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>In the <span class="gui-object-title">Map As</span> field, select <span class="gui-object-action">One-to-many</span>.</p> -</li> -<li> -<p>Use this table to complete the <a href="ref_mapping_general.htm#CACBHFIJ">General information</a> fields JPA Details view.</p> -<div class="inftblruleinformal"> -<table class="RuleInformal" title="This table lists the fields in the General tab of the Persistence Properties view for this mapping." summary="This table lists the fields in the General tab of 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-t13">Property</th> -<th align="left" valign="bottom" id="r1c2-t13">Description</th> -<th align="left" valign="bottom" id="r1c3-t13">Default</th> -</tr> -</thead> -<tbody> -<tr align="left" valign="top"> -<td align="left" id="r2c1-t13" headers="r1c1-t13">Target Entity</td> -<td align="left" headers="r2c1-t13 r1c2-t13">The entity to which this attribute is mapped.</td> -<td align="left" headers="r2c1-t13 r1c3-t13"><br /></td> -</tr> -<tr align="left" valign="top"> -<td align="left" id="r3c1-t13" headers="r1c1-t13">Fetch Type</td> -<td align="left" headers="r3c1-t13 r1c2-t13">Defines how data is loaded from the database. See <a href="ref_mapping_general.htm#CACGGGHB">"Fetch Type"</a> for details. -<ul> -<li type="disc"> -<p>Eager</p> -</li> -<li type="disc"> -<p>Lazy</p> -</li> -</ul> -</td> -<td align="left" headers="r3c1-t13 r1c3-t13">Eager</td> -</tr> -<tr align="left" valign="top"> -<td align="left" id="r4c1-t13" headers="r1c1-t13">Mapped By</td> -<td align="left" headers="r4c1-t13 r1c2-t13">The database field that owns the relationship.</td> -<td align="left" headers="r4c1-t13 r1c3-t13"><br /></td> -</tr> -<tr align="left" valign="top"> -<td align="left" id="r5c1-t13" headers="r1c1-t13">Order By</td> -<td align="left" headers="r5c1-t13 r1c2-t13">Specify the default order for objects returned from a query. See <a href="ref_mapping_general.htm#CACDADIH">"Order By"</a> for details. -<ul> -<li type="disc"> -<p>No ordering</p> -</li> -<li type="disc"> -<p>Primary key</p> -</li> -<li type="disc"> -<p>Custom</p> -</li> -</ul> -</td> -<td align="left" headers="r5c1-t13 r1c3-t13">No ordering</td> -</tr> -</tbody> -</table> -<br /></div> -<!-- class="inftblruleinformal" --></li> -<li> -<p>Use this table to complete the <a href="reference006.htm#CACBAEBC">Join Table Information</a> fields in the JPA Details view.</p> -<div class="inftblruleinformal"> -<table class="RuleInformal" title="This table lists the fields in the Join Table tab of the Persistence Properties view for this mapping." summary="This table lists the fields in the Join Table tab of 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-t14">Property</th> -<th align="left" valign="bottom" id="r1c2-t14">Description</th> -<th align="left" valign="bottom" id="r1c3-t14">Default</th> -</tr> -</thead> -<tbody> -<tr align="left" valign="top"> -<td align="left" id="r2c1-t14" headers="r1c1-t14">Name</td> -<td align="left" headers="r2c1-t14 r1c2-t14">Name of the join table</td> -<td align="left" headers="r2c1-t14 r1c3-t14">By default, the name is assumed to be the primary tables associated with the entities concatenated with an underscore.</td> -</tr> -<tr align="left" valign="top"> -<td align="left" id="r3c1-t14" headers="r1c1-t14">Join Columns</td> -<td align="left" headers="r3c1-t14 r1c2-t14">Specify two or more join columns (that is, a primary key).</td> -<td align="left" headers="r3c1-t14 r1c3-t14"><br /></td> -</tr> -<tr align="left" valign="top"> -<td align="left" id="r4c1-t14" headers="r1c1-t14">Inverse Join Columns</td> -<td align="left" headers="r4c1-t14 r1c2-t14">The join column on the owned (or inverse) side of the association: the owned entity's primary key column.</td> -<td align="left" headers="r4c1-t14 r1c3-t14"><br /></td> -</tr> -</tbody> -</table> -<br /></div> -<!-- class="inftblruleinformal" --></li> -</ol> -<p>Eclipse adds the following annotations to the field:</p> -<pre xml:space="preserve" class="oac_no_warn"> -@OneToMany(targetEntity=<span class="italic"><TARGET_ENTITY></span>) -@Column(name="<span class="italic"><COLUMN></span>") - - -@OneToMany(targetEntity=<span class="italic"><TARGET_ENTITY></span>.class, cascade=CascadeType.<span class="italic"><CASCADE_TYPE></span>, - fetch = FetchType.<span class="italic"><FETCH_TYPE></span>, mappedBy = "<span class="italic"><MAPPED_BY></span>")@OrderBy("<span class="italic"><ORDER_BY></span>") -@JoinTable(name="<span class="italic"><JOIN_TABLE_NAME></span>", joinColumns=@JoinColumn(name= - "<span class="italic"><JOIN_COLUMN_NAME></span>", referencedColumnName="<span class="italic"><JOIN_COLUMN_REFERENCED_COLUMN></span>"), - inverseJoinColumns=@JoinColumn(name="<span class="italic"><INVERSE_JOIN_COLUMN_NAME></span>", - referencedColumnName="<span class="italic"><INVERSE_JOIN_COLUMN_REFERENCED_COLUMN></span>")) - - -</pre> -<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> </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" --> -<!-- 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, 2007, Oracle. All rights reserved.</span></a></td> -</tr> -</table> -</div> -<!-- class="footer" --> -</body> -</html> |