01: /*
02: * (c) Copyright 2006 by Volker Bergmann. All rights reserved.
03: *
04: * Redistribution and use in source and binary forms, with or without
05: * modification, is permitted under the terms of the
06: * GNU General Public License.
07: *
08: * For redistributing this software or a derivative work under a license other
09: * than the GPL-compatible Free Software License as defined by the Free
10: * Software Foundation or approved by OSI, you must first obtain a commercial
11: * license to this software product from Volker Bergmann.
12: *
13: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
14: * WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
15: * REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
16: * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
17: * HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
18: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24: * POSSIBILITY OF SUCH DAMAGE.
25: */
26:
27: package org.databene.platform.db.model;
28:
29: import org.databene.commons.ArrayFormat;
30: import org.databene.platform.bean.ArrayPropertyExtractor;
31:
32: import java.util.Arrays;
33:
34: /**
35: * Created: 06.01.2007 08:58:49
36: */
37: public abstract class DBConstraint {
38:
39: protected String name;
40:
41: /**
42: * @param name the constraint name - it may be null
43: */
44: public DBConstraint(String name) {
45: this .name = name;
46: }
47:
48: public String getName() {
49: return name;
50: }
51:
52: public abstract DBTable getOwner();
53:
54: public abstract DBColumn[] getColumns();
55:
56: public boolean equals(Object o) {
57: if (this == o)
58: return true;
59: if (o == null || getClass() != o.getClass())
60: return false;
61: final DBConstraint that = (DBConstraint) o;
62: return (this .getOwner().equals(that.getOwner()) && Arrays
63: .equals(getColumns(), that.getColumns()));
64: }
65:
66: public int hashCode() {
67: return this .getOwner().hashCode() * 29
68: + Arrays.hashCode(getColumns());
69: }
70:
71: public String toString() {
72: StringBuilder builder = new StringBuilder();
73: builder.append(getClass().getSimpleName()).append('[').append(
74: getOwner().getName()).append('[');
75: String[] columnNames = ArrayPropertyExtractor.convert(
76: getColumns(), "name", String.class);
77: builder.append(ArrayFormat.format(columnNames));
78: builder.append("]]");
79: return builder.toString();
80: }
81: }
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