01: /*
02: * Copyright (c) 2007, intarsys consulting GmbH
03: *
04: * Redistribution and use in source and binary forms, with or without
05: * modification, are permitted provided that the following conditions are met:
06: *
07: * - Redistributions of source code must retain the above copyright notice,
08: * this list of conditions and the following disclaimer.
09: *
10: * - Redistributions in binary form must reproduce the above copyright notice,
11: * this list of conditions and the following disclaimer in the documentation
12: * and/or other materials provided with the distribution.
13: *
14: * - Neither the name of intarsys nor the names of its contributors may be used
15: * to endorse or promote products derived from this software without specific
16: * prior written permission.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28: * POSSIBILITY OF SUCH DAMAGE.
29: */
30: package de.intarsys.pdf.cos;
31:
32: /**
33: * Represents the boolean value "true"
34: */
35: public class COSTrue extends COSBoolean {
36: static public COSTrue create() {
37: return new COSTrue();
38: }
39:
40: private COSTrue() {
41: super ();
42: }
43:
44: private COSTrue(COSObject object) {
45: super (object);
46: }
47:
48: /*
49: * (non-Javadoc)
50: *
51: * @see de.intarsys.pdf.cos.COSObject#basicToString()
52: */
53: protected String basicToString() {
54: return "true"; //$NON-NLS-1$
55: }
56:
57: /*
58: * (non-Javadoc)
59: *
60: * @see de.intarsys.pdf.cos.COSBoolean#booleanValue()
61: */
62: public boolean booleanValue() {
63: return true;
64: }
65:
66: protected COSObject copyBasic() {
67: return create();
68: }
69:
70: /*
71: * (non-Javadoc)
72: *
73: * @see java.lang.Object#equals(java.lang.Object)
74: */
75: public boolean equals(Object o) {
76: return o instanceof COSTrue;
77: }
78:
79: /**
80: * Returns an arbitrary number to avoid collisions
81: *
82: * @return 19
83: * @see Object#hashCode()
84: */
85: public int hashCode() {
86: // arbitrary number to avoid collisions
87: return 19;
88: }
89:
90: /*
91: * (non-Javadoc)
92: *
93: * @see de.intarsys.tools.objectsession.ISaveStateSupport#saveState()
94: */
95: public Object saveState() {
96: return new COSTrue(this);
97: }
98: }
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