Skip to main content
summaryrefslogblamecommitdiffstats
blob: 98ec9f51ff7a1106fb1bb86a364ca3b6227e61c1 (plain) (tree)
1
2
3
4
5
6
7
8
9
10






                                                                        
                                  

                                                                                                                                                                                                                                                                                                                                                                      
                                                  
                                          
                                                      

                                             



                                                                                               
                                                       
                                            
                                                              
                                                                                                                                                 




























































































































                                                                                                                                                                                    
      






                                                                                          
                                                                                                                                                                                      






                                                                                         
<!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>
<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" />
<title>One-to-Many Mapping</title>
<meta name="copyright" content="Copyright (c) 2000, 2009 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" />
<meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 1.0.11" />
<meta name="date" content="2013-01-03T9:24:55Z" />
<meta name="robots" content="noarchive" />
<meta name="doctitle" content="One-to-Many Mapping" />
<meta name="relnum" content="Release 3.3" />
<meta name="partnum" content="Release 3.3" />
<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" />
</head>
<body>
<p class="betadraftsubtitle">Beta Draft: 2013-01-03</p>
<p><a id="CACHGGHH" name="CACHGGHH"></a></p>
<div class="sect3"><!-- infolevel="all" infotype="General" -->
<h1><a id="sthref562" name="sthref562"></a><a id="sthref563" name="sthref563"></a><a id="sthref564" name="sthref564"></a>One-to-Many Mapping</h1>
<div class="inftblhruleinformal">
<table class="HRuleInformal" summary="JPA Details view, One-to-one page" dir="ltr" border="1" width="100%" frame="hsides" rules="rows" cellpadding="3" cellspacing="0">
<col width="29%" />
<col width="*" />
<col width="24%" />
<thead>
<tr align="left" valign="top">
<th align="left" valign="bottom" id="r1c1-t39">Property</th>
<th align="left" valign="bottom" id="r1c2-t39">Description</th>
<th align="left" valign="bottom" id="r1c3-t39">Default</th>
</tr>
</thead>
<tbody>
<tr align="left" valign="top">
<td align="left" id="r2c1-t39" headers="r1c1-t39">
<p>Target entity</p>
</td>
<td align="left" headers="r2c1-t39 r1c2-t39">
<p>The persistent entity to which the attribute is mapped.</p>
</td>
<td align="left" headers="r2c1-t39 r1c3-t39"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r3c1-t39" headers="r1c1-t39">
<p>Fetch</p>
</td>
<td align="left" headers="r3c1-t39 r1c2-t39">
<p>Defines how data is loaded from the database:</p>
<ul>
<li>
<p>Eager &ndash; Data is loaded in before it is actually needed.</p>
</li>
<li>
<p>Lazy &ndash; Data is loaded only when required by the transaction.</p>
</li>
</ul>
</td>
<td align="left" headers="r3c1-t39 r1c3-t39">
<p>Lazy</p>
</td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r4c1-t39" headers="r1c1-t39">
<p>Join fetch</p>
</td>
<td align="left" headers="r4c1-t39 r1c2-t39">
<p>The type of fetch to use:</p>
<ul>
<li>
<p>Inner &ndash; Provides the inner join fetching of the related object.</p>
<p><span class="bold">Note</span>: Inner joining does not allow for null or empty values</p>
</li>
<li>
<p>Outer &ndash; Provides the outer join fetching of the related object</p>
<p><span class="bold">Note</span>: Outer joining allows for null or empty values.</p>
</li>
</ul>
</td>
<td align="left" headers="r4c1-t39 r1c3-t39"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r5c1-t39" headers="r1c1-t39">
<p>Private owned</p>
</td>
<td align="left" headers="r5c1-t39 r1c2-t39">
<p>Specify that a relationship is privately owned; target object is a dependent part of the source object and is not referenced by any other object and cannot exist on its own.</p>
</td>
<td align="left" headers="r5c1-t39 r1c3-t39"><br /></td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r6c1-t39" headers="r1c1-t39">
<p>Orphan removal</p>
</td>
<td align="left" headers="r6c1-t39 r1c2-t39"><br /></td>
<td align="left" headers="r6c1-t39 r1c3-t39">
<p>False</p>
</td>
</tr>
<tr align="left" valign="top">
<td align="left" id="r7c1-t39" headers="r1c1-t39">
<p>Cascade</p>
</td>
<td align="left" headers="r7c1-t39 r1c2-t39">
<p>Specify which operations are propagated throughout the entity.</p>
<ul>
<li>
<p>All &ndash; All operations</p>
</li>
<li>
<p>Persist</p>
</li>
<li>
<p>Merge</p>
</li>
<li>
<p>Move</p>
</li>
<li>
<p>Remove</p>
</li>
<li>
<p>Refresh</p>
</li>
</ul>
</td>
<td align="left" headers="r7c1-t39 r1c3-t39">
<p>True</p>
</td>
</tr>
</tbody>
</table>
<br /></div>
<!-- class="inftblhruleinformal" -->
<p>One-to-many mappings also include the following areas:</p>
<ul>
<li>
<p><a href="reference047.htm#CACIJEGI">Joining Strategy</a></p>
</li>
<li>
<p><a href="reference045.htm#CACJCHJB">Converters</a></p>
</li>
<li>
<p><a href="reference046.htm#CACBIJFD">Ordering</a></p>
</li>
</ul>
</div>
<!-- class="sect3" -->
<!-- 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"><span class="copyrightlogo">Copyright&nbsp;&copy;&nbsp;2011, 2013,&nbsp;Oracle&nbsp;and/or&nbsp;its&nbsp;affiliates.&nbsp;All&nbsp;rights&nbsp;reserved.</span><br />
<a href="dcommon/html/cpyr.htm"><span class="copyrightlogo">Legal Notices</span></a></td>
</tr>
</table>
</div>
<!-- class="footer" -->
</body>
</html>

Back to the top