1 /*
2 Copyright (c) 2011 James Ahlborn
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License.
8
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with this library; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
17 USA
18 */
19
20 package com.healthmarketscience.sqlbuilder.dbspec;
21
22 import java.util.List;
23
24 /**
25 * Maintains information about a database (table or column) constraint for use
26 * with the sqlbuilder utilities.
27 *
28 * @author James Ahlborn
29 */
30 public interface Constraint
31 {
32 public enum Type {
33 NOT_NULL,
34 UNIQUE,
35 PRIMARY_KEY,
36 FOREIGN_KEY;
37 }
38
39 /** @return the type of this constraint */
40 public Type getType();
41
42 /** @return the name of this constraint, if any */
43 public String getConstraintNameSQL();
44
45 /** @return the constrained columns */
46 public List<? extends Column> getColumns();
47 }