1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
<!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>Basic 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="2012-10-11T7:52:7Z" />
<meta name="robots" content="noarchive" />
<meta name="doctitle" content="Basic mapping" />
<meta name="relnum" content="Release 3.2" />
<meta name="partnum" content="Release 3.2" />
<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: 2012-10-11</p>
<p><a id="BABBABCE" name="BABBABCE"></a></p>
<div class="sect2"><!-- infolevel="all" infotype="General" -->
<h1>Basic mapping</h1>
<p><a id="sthref201" name="sthref201"></a><a id="sthref202" name="sthref202"></a><a id="sthref203" name="sthref203"></a><a id="sthref204" name="sthref204"></a>Use a <span class="bold">Basic Mapping</span> to map an attribute directly to a database column. Basic mappings may be used only with the following attribute types:</p>
<ul>
<li>
<p>Java primitive types and wrappers of the primitive types</p>
</li>
<li>
<p><code>java.lang.String, java.math.BigInteger</code></p>
</li>
<li>
<p><code>java.math.BigDecimal</code></p>
</li>
<li>
<p><code>java.util.Date</code></p>
</li>
<li>
<p><code>java.util.Calendar, java.sql.Date</code></p>
</li>
<li>
<p><code>java.sql.Time</code></p>
</li>
<li>
<p><code>java.sql.Timestamp</code></p>
</li>
<li>
<p><code>byte[]</code></p>
</li>
<li>
<p><code>Byte[]</code></p>
</li>
<li>
<p><code>char[]</code></p>
</li>
<li>
<p><code>Character[]</code></p>
</li>
<li>
<p>enums</p>
</li>
<li>
<p>any other type that implements <code>Serializable</code></p>
</li>
</ul>
<p>To create a basic mapping:</p>
<ol>
<li>
<p>In the <a href="ref_persistence_outline.htm#BABEGGFE">JPA Structure view</a>, right-click the field to map. Select <span class="bold">Map As > Basic</span>. The <a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a> displays the properties for the selected field.</p>
<div class="figure"><a id="sthref205" name="sthref205"></a>
<p class="titleinfigure">JPA Details, Basic mapping</p>
<img src="img/jpa_details_basic.png" alt="PA Details, Basic mapping" title="PA Details, Basic mapping" /><br /></div>
<!-- class="figure" --></li>
<li>
<p>Complete each field in the <a href="reference033.htm#CACCGGCG">Basic Mapping</a> area.</p>
</li>
<li>
<p>Complete the remaining areas in the <a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a>.</p>
</li>
</ol>
<p>Eclipse adds the following annotations to the field:</p>
<pre xml:space="preserve" class="oac_no_warn">
@Column(name="<span class="italic"><COLUMN_NAME></span>", table="<span class="italic"><COLUMN_TABLE></span>",
insertable=<span class="italic"><INSERTABLE></span>, updatable=<span class="italic"><UPDATABLE></span>)
@Basic(fetch=FetchType.<span class="italic"><FETCH_TYPE></span>, optional = <span class="italic"><OPTIONAL></span>)
@Temporal(TemporalType.<span class="italic"><TEMPORAL></span>)
</pre>
<a id="sthref206" name="sthref206"></a>
<p class="subhead2">Related tasks</p>
<ul>
<li>
<p><a href="task_mapping.htm#BABDGBIJ">Mapping an entity</a></p>
</li>
</ul>
<a id="sthref207" name="sthref207"></a>
<p class="subhead2">Related references</p>
<ul>
<li>
<p><a href="ref_persistence_outline.htm#BABEGGFE">JPA Structure view</a></p>
</li>
<li>
<p><a href="ref_persistence_map_view.htm#BABIFBAF">JPA Details view (for attributes)</a></p>
</li>
</ul>
<a id="sthref208" name="sthref208"></a>
<p class="subhead2">Related concepts</p>
<ul>
<li>
<p><a href="concept_mapping.htm#BABBDJFI">Understanding OR mappings</a></p>
</li>
<li>
<p><a href="concepts001.htm#BABBGFJG">Understanding Java Persistence API</a></p>
</li>
</ul>
</div>
<!-- class="sect2" -->
<!-- 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 © 2011, 2012, 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>
<!-- class="footer" -->
</body>
</html>
|
