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Java > Open Source Codes > com > caucho > db > table > Constraint


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.db.table;
30
31 import com.caucho.db.sql.QueryContext;
32 import com.caucho.db.store.Transaction;
33
34 import java.sql.SQLException JavaDoc;
35
36 /**
37  * Validity constraints.
38  */
39 abstract public class Constraint {
40   private String JavaDoc _name;
41
42   /**
43    * Sets an identifier for the constraint.
44    */
45   public void setName(String JavaDoc name)
46   {
47     _name = name;
48   }
49
50   /**
51    * Gets an identifier for the constraint.
52    */
53   public String JavaDoc getName()
54   {
55     return _name;
56   }
57
58   /**
59    * Tries to validate the constraint.
60    */
61   public void validate(TableIterator []rows,
62                QueryContext contstraint, Transaction xa)
63     throws SQLException JavaDoc
64   {
65     throw new UnsupportedOperationException JavaDoc(getClass().getName());
66   }
67 }
68
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