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Java > Open Source Codes > com > caucho > ejb > cfg > SqlRelation


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.ejb.cfg;
30
31 import com.caucho.util.L10N;
32
33 /**
34  * Represents a single relation to SQL mapping.
35  */
36 public class SqlRelation {
37   private static L10N L = new L10N(CmpRelation.class);
38
39   private String JavaDoc _fieldName;
40   
41   private String JavaDoc _references;
42   private String JavaDoc _sqlColumn;
43
44   public SqlRelation(String JavaDoc fieldName)
45   {
46     _fieldName = fieldName;
47   }
48
49   /**
50    * Returns the name of the field.
51    */
52   public String JavaDoc getFieldName()
53   {
54     return _fieldName;
55   }
56   
57   /**
58    * Returns the field this relation references.
59    */
60   public String JavaDoc getReferences()
61   {
62     return _references;
63   }
64   
65   /**
66    * Sets the field this relation references.
67    */
68   public void setReferences(String JavaDoc references)
69   {
70     _references = references;
71   }
72   
73   /**
74    * Returns the sql column for the field.
75    */
76   public String JavaDoc getSQLColumn()
77   {
78     return _sqlColumn;
79   }
80   
81   /**
82    * Sets the sql column for the field.
83    */
84   public void setSQLColumn(String JavaDoc sqlColumn)
85   {
86     _sqlColumn = sqlColumn;
87   }
88
89   /**
90    * Returns true if this is the same relation.
91    */
92   public boolean equals(Object JavaDoc o)
93   {
94     if (! (o instanceof SqlRelation))
95       return false;
96
97     SqlRelation relation = (SqlRelation) o;
98
99     if (! _fieldName.equals(relation._fieldName))
100       return false;
101
102     if (_references == relation._references)
103       return true;
104
105     if (_references == null || relation._references == null)
106       return false;
107
108     return _references.equals(relation._references);
109   }
110 }
111
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