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11 package org.eclipse.core.internal.plugins;
12
13 import org.eclipse.core.runtime.IPluginPrerequisite;
14 import org.eclipse.core.runtime.PluginVersionIdentifier;
15 import org.eclipse.osgi.service.resolver.BundleSpecification;
16 import org.eclipse.osgi.service.resolver.VersionRange;
17 import org.osgi.framework.Version;
18
19
20
23 public class PluginPrerequisite implements IPluginPrerequisite {
24 private static final Version maxVersion = new Version(Integer.MAX_VALUE, Integer.MAX_VALUE, Integer.MAX_VALUE);
25 private BundleSpecification prereq = null;
26
27 public PluginPrerequisite(BundleSpecification b) {
28 prereq = b;
29 }
30
31 public PluginVersionIdentifier getResolvedVersionIdentifier() {
32 Version actualVersion = prereq.getSupplier().getVersion();
33 if (actualVersion == null)
34 return null;
35 return new PluginVersionIdentifier(actualVersion.toString());
36 }
37
38 public String  getUniqueIdentifier() {
39 return prereq.getName();
40 }
41
42 public PluginVersionIdentifier getVersionIdentifier() {
43 Version specifiedVersion = prereq.getVersionRange() == null ? null : prereq.getVersionRange().getMinimum();
44 if (specifiedVersion == null)
45 return null;
46 return new PluginVersionIdentifier(specifiedVersion.toString());
47 }
48
49 public boolean isExported() {
50 return prereq.isExported();
51 }
52
53 public boolean isMatchedAsGreaterOrEqual() {
54 return isMatchedAsGreaterOrEqual(prereq.getVersionRange());
55 }
56
57 public boolean isMatchedAsCompatible() {
58 return isMatchedAsCompatible(prereq.getVersionRange());
59 }
60
61 public boolean isMatchedAsEquivalent() {
62 return isMatchedAsEquivalent(prereq.getVersionRange());
63 }
64
65 public boolean isMatchedAsPerfect() {
66 return isMatchedAsPerfect(prereq.getVersionRange());
67 }
68
69 public boolean isMatchedAsExact() {
70 return isMatchedAsEquivalent();
71 }
72
73 public boolean isOptional() {
74 return prereq.isOptional();
75 }
76
77 private static boolean isMatchedAsGreaterOrEqual(VersionRange versionRange) {
78 if (versionRange == null || versionRange.getMinimum() == null)
79 return false;
80 Version maximum = versionRange.getMaximum();
81 if (maximum == null || maximum.compareTo(maxVersion) >= 0)
82 return true;
83 return false;
84 }
85
86 private static boolean isMatchedAsPerfect(VersionRange versionRange) {
87 if (versionRange == null || versionRange.getMinimum() == null)
88 return false;
89 Version minimum = versionRange.getMinimum();
90 Version maximum = versionRange.getMaximum() == null ? maxVersion : versionRange.getMaximum();
91 if (minimum.equals(maximum))
92 return true;
93 return false;
94 }
95
96 private static boolean isMatchedAsEquivalent(VersionRange versionRange) {
97 if (versionRange == null || versionRange.getMinimum() == null)
98 return false;
99 Version minimum = versionRange.getMinimum();
100 Version maximum = versionRange.getMaximum() == null ? maxVersion : versionRange.getMaximum();
101 if (!versionRange.getIncludeMinimum() || versionRange.getIncludeMaximum())
102 return false;
103 else if (minimum.getMajor() == maximum.getMajor() - 1)
104 return false;
105 else if (minimum.getMajor() != maximum.getMajor())
106 return false;
107 else if (minimum.getMinor() == maximum.getMinor() - 1)
108 return true;
109 return false;
110 }
111
112 private static boolean isMatchedAsCompatible(VersionRange versionRange) {
113 if (versionRange == null || versionRange.getMinimum() == null)
114 return false;
115 Version minimum = versionRange.getMinimum();
116 Version maximum = versionRange.getMaximum() == null ? maxVersion : versionRange.getMaximum();
117 if (!versionRange.getIncludeMinimum() || versionRange.getIncludeMaximum())
118 return false;
119 else if (minimum.getMajor() == maximum.getMajor() - 1)
120 return true;
121 return false;
122 }
123 }
124
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