|
1
11 package org.eclipse.pde.internal.build.site;
12
13 import org.eclipse.osgi.service.resolver.VersionRange;
14 import org.eclipse.pde.internal.build.IBuildPropertiesConstants;
15 import org.eclipse.pde.internal.build.IPDEBuildConstants;
16 import org.eclipse.update.core.*;
17 import org.osgi.framework.Version;
18
19 public class ReachablePlugin implements Comparable  {
20 private static final Version GENERIC_VERSION = new Version(IPDEBuildConstants.GENERIC_VERSION_NUMBER);
21 private static final Version MAX_VERSION = new Version(Integer.MAX_VALUE, Integer.MAX_VALUE, Integer.MAX_VALUE);
22 public static final VersionRange WIDEST_RANGE = new VersionRange(new Version(0, 0, 0), true, MAX_VERSION, true);
23
24 private String id;
25 private VersionRange range;
26
27 public ReachablePlugin(String id, VersionRange range) {
28 this.id = id;
29 this.range = range;
30 }
31
32 public ReachablePlugin(IPluginEntry entry) {
33 id = entry.getVersionedIdentifier().getIdentifier();
34 Version version = new Version(entry.getVersionedIdentifier().getVersion().toString());
35 if (version.equals(GENERIC_VERSION)) {
36 range = WIDEST_RANGE;
37 } else if (version.getQualifier().endsWith(IBuildPropertiesConstants.PROPERTY_QUALIFIER)) {
38 if (version.getMicro() == 0) {
39 range = new VersionRange(new Version(version.getMajor(), version.getMinor(), 0), true, new Version(version.getMajor(), version.getMinor() + 1, 0), false);
40 } else {
41 range = new VersionRange(new Version(version.getMajor(), version.getMinor(), version.getMicro()), true, new Version(version.getMajor(), version.getMinor(), version.getMicro() + 1), false);
42 }
43 } else {
44 range = new VersionRange(version, true, version, true);
45 }
46 }
47
48 public ReachablePlugin(IImport existingImport) {
49 id = existingImport.getVersionedIdentifier().getIdentifier();
50 range = constructRange(new Version(existingImport.getVersionedIdentifier().toString()), existingImport.getRule());
51 }
52
53 private VersionRange constructRange(Version initialValue, int ruleCode) {
54 switch (ruleCode) {
55 case IUpdateConstants.RULE_NONE :
56 case IUpdateConstants.RULE_EQUIVALENT : return new VersionRange(initialValue, true, new Version(initialValue.getMajor(), initialValue.getMinor() + 1, 0), false);
58
59 case IUpdateConstants.RULE_PERFECT : return new VersionRange(initialValue, true, initialValue, true);
61
62 case IUpdateConstants.RULE_COMPATIBLE : return new VersionRange(initialValue, true, new Version(initialValue.getMajor() + 1, 0, 0), false);
64
65 case IUpdateConstants.RULE_GREATER_OR_EQUAL : return new VersionRange(initialValue, true, new Version(Integer.MAX_VALUE, Integer.MAX_VALUE, Integer.MAX_VALUE), true);
67 default :
68 return null;
69 }
70
71 }
72
73 public String getId() {
74 return id;
75 }
76
77 public VersionRange getRange() {
78 return range;
79 }
80
81 public int compareTo(Object o) {
82 if (o instanceof ReachablePlugin) {
83 ReachablePlugin toCompare = (ReachablePlugin) o;
84 int result = id.compareTo(toCompare.id);
85 if (result != 0)
86 return result;
87 result = substract(toCompare.range.getMaximum(), toCompare.range.getMinimum()).compareTo(substract(range.getMaximum(), range.getMinimum()));
89 if (result != 0)
90 return result;
91 if (this.equals(o))
92 return 0;
93 result = range.getMinimum().compareTo(toCompare.range.getMaximum());
94 if (result != 0)
95 return result;
96 return -1;
98 }
99 return -1;
100 }
101
102 private Version substract(Version v1, Version v2) { int major, minor, micro = 0;
104 int carry = 0;
105 if (v1.getMicro() < v2.getMicro()) {
106 micro = Integer.MAX_VALUE - v2.getMicro() + v1.getMicro();
107 carry = 1;
108 } else {
109 micro = v1.getMicro() - v2.getMicro();
110 carry = 0;
111 }
112 if (v1.getMinor() < v2.getMinor() + carry) {
113 minor = Integer.MAX_VALUE - (v2.getMinor() + carry) + v1.getMinor();
114 carry = 1;
115 } else {
116 minor = v1.getMinor() - (v2.getMinor() + carry);
117 carry = 0;
118 }
119 if (v1.getMajor() < v2.getMajor() + carry) {
120 major = Integer.MAX_VALUE - (v2.getMajor() + carry) + v1.getMajor();
121 carry = 1;
122 } else {
123 major = v1.getMajor() - (v2.getMajor() + carry);
124 carry = 0;
125 }
126 return new Version(major, minor, micro);
127 }
128
129 public boolean equals(Object obj) {
130 if (obj instanceof ReachablePlugin) {
131 ReachablePlugin toCompare = (ReachablePlugin) obj;
132 if (!id.equals(toCompare.id))
133 return false;
134 if (range.getIncludeMinimum() != toCompare.range.getIncludeMinimum())
135 return false;
136 if (range.getIncludeMaximum() != toCompare.range.getIncludeMaximum())
137 return false;
138 return range.getMinimum().equals(toCompare.range.getMinimum()) && range.getMaximum().equals(toCompare.range.getMaximum());
139 }
140 return false;
141 }
142
143 public int hashCode() {
144 return id.hashCode() + range.hashCode() * 17;
145 }
146
147 public String toString() {
148 return id + ' ' + range.toString();
149 }
150 }
151 |
Popular Tags |
Java API By Example, From Geeks To Geeks.