01: /*****************************************************************************
02: * Java Plug-in Framework (JPF)
03: * Copyright (C) 2007 Dmitry Olshansky
04: *
05: * This library is free software; you can redistribute it and/or
06: * modify it under the terms of the GNU Lesser General Public
07: * License as published by the Free Software Foundation; either
08: * version 2.1 of the License, or (at your option) any later version.
09: *
10: * This library is distributed in the hope that it will be useful,
11: * but WITHOUT ANY WARRANTY; without even the implied warranty of
12: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13: * Lesser General Public License for more details.
14: *
15: * You should have received a copy of the GNU Lesser General Public
16: * License along with this library; if not, write to the Free Software
17: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18: *****************************************************************************/package org.java.plugin.registry;
19:
20: /**
21: * Version identifier matching modes.
22: */
23: public enum MatchingRule {
24: /**
25: * Version identifier matching rule constant.
26: */
27: EQUAL {
28: /**
29: * @see org.java.plugin.registry.MatchingRule#toCode()
30: */
31: @Override
32: public String toCode() {
33: return "equal"; //$NON-NLS-1$
34: }
35: },
36:
37: /**
38: * Version identifier matching rule constant.
39: */
40: EQUIVALENT {
41: /**
42: * @see org.java.plugin.registry.MatchingRule#toCode()
43: */
44: @Override
45: public String toCode() {
46: return "equivalent"; //$NON-NLS-1$
47: }
48: },
49:
50: /**
51: * Version identifier matching rule constant.
52: */
53: COMPATIBLE {
54: /**
55: * @see org.java.plugin.registry.MatchingRule#toCode()
56: */
57: @Override
58: public String toCode() {
59: return "compatible"; //$NON-NLS-1$
60: }
61: },
62:
63: /**
64: * Version identifier matching rule constant.
65: */
66: GREATER_OR_EQUAL {
67: /**
68: * @see org.java.plugin.registry.MatchingRule#toCode()
69: */
70: @Override
71: public String toCode() {
72: return "greater-or-equal"; //$NON-NLS-1$
73: }
74: };
75:
76: /**
77: * @return constant code to be used in plug-in manifest
78: */
79: public abstract String toCode();
80:
81: /**
82: * Converts plug-in manifest string code to matching rule constant value.
83: * @param code code from plug-in manifest
84: * @return matching rule constant value
85: */
86: public static MatchingRule fromCode(final String code) {
87: for (MatchingRule item : MatchingRule.values()) {
88: if (item.toCode().equals(code)) {
89: return item;
90: }
91: }
92: throw new IllegalArgumentException(
93: "unknown matching rule code " + code); //$NON-NLS-1$
94: }
95: }
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