01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * 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;
35:
36: /**
37: * Validity constraints.
38: */
39: abstract public class Constraint {
40: private String _name;
41:
42: /**
43: * Sets an identifier for the constraint.
44: */
45: public void setName(String name) {
46: _name = name;
47: }
48:
49: /**
50: * Gets an identifier for the constraint.
51: */
52: public String getName() {
53: return _name;
54: }
55:
56: /**
57: * Tries to validate the constraint.
58: */
59: public void validate(TableIterator[] rows,
60: QueryContext contstraint, Transaction xa)
61: throws SQLException {
62: throw new UnsupportedOperationException(getClass().getName());
63: }
64: }
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