01: package net.sourceforge.squirrel_sql.fw.id;
02:
03: /*
04: * Copyright (C) 2001-2004 Colin Bell
05: * colbell@users.sourceforge.net
06: *
07: * This library is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU Lesser General Public
09: * License as published by the Free Software Foundation; either
10: * version 2.1 of the License, or (at your option) any later version.
11: *
12: * This library is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this library; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20: */
21: /**
22: * This class is a factory that generates <tt>IntegerIdentifier</tt>
23: * objects. Each identifier generated will have a value one greater
24: * than the previously generated one.
25: *
26: * @author <A HREF="mailto:colbell@users.sourceforge.net">Colin Bell</A>
27: */
28: public class IntegerIdentifierFactory implements IIdentifierFactory {
29: private int _next;
30:
31: /**
32: * Default ctor. First identifier generated will have a value of zero.
33: */
34: public IntegerIdentifierFactory() {
35: this (0);
36: }
37:
38: /**
39: * ctor specifying the value of the first identifier.
40: *
41: * @param initialValue Value for first identifier generated.
42: */
43: public IntegerIdentifierFactory(int initialValue) {
44: super ();
45: _next = initialValue;
46: }
47:
48: /**
49: * Create a new identifier.
50: *
51: * @return The new identifier object.
52: */
53: public synchronized IIdentifier createIdentifier() {
54: return new IntegerIdentifier(_next++);
55: }
56: }
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