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1
11 package org.eclipse.pde.internal.core;
12
13 import java.util.ArrayList  ;
14 import java.util.HashMap ;
15 import java.util.Map ;
16
17 import org.eclipse.pde.internal.core.ifeature.IFeature;
18 import org.eclipse.pde.internal.core.ifeature.IFeatureModel;
19
20
26 class FeatureTable {
27 public class Idver {
28 private final String fId;
29
30 private final String fVer;
31
32 public Idver(String id, String version) {
33 fId = id;
34 fVer = version;
35 }
36
37 public String getId() {
38 return fId;
39 }
40
41 public String getVer() {
42 return fVer;
43 }
44
45 public int hashCode() {
46 int code = 0;
47 if (fId != null)
48 code += fId.hashCode();
49 if (fVer != null)
50 code += fVer.hashCode();
51
52 return code;
53 }
54
55 public boolean equals(Object obj) {
56 if (this == obj)
57 return true;
58 if (!(obj instanceof Idver))
59 return false;
60 return equals(((Idver) obj).getId(), ((Idver) obj).getVer());
61 }
62
63 public boolean equals(String id, String version) {
64 boolean sameId = fId == null && id == null || fId != null
65 && fId.equals(id);
66 boolean sameVer = fVer == null && version == null || fVer != null
67 && fVer.equals(version);
68 return sameId && sameVer;
69
70 }
71
72 public String toString() {
73 return fId + "_" + fVer; }
75 }
76
77 private static final IFeatureModel[] NO_MODELS = new IFeatureModel[0];
78
79
82 private Map fModel2idver;
83
84
87 private Map fIdver2models;
88
89
92 private Map fId2idvers;
93
94 public FeatureTable() {
95
96 fModel2idver = new HashMap ();
97 fIdver2models = new HashMap ();
98 fId2idvers = new HashMap ();
99 }
100
101 public synchronized Idver get(IFeatureModel model) {
102 return (Idver) fModel2idver.get(model);
103 }
104
105
110 public synchronized IFeatureModel[] get(String id, String version) {
111 return getImpl(new Idver(id, version));
112 }
113
114
118 public synchronized IFeatureModel[] get(Idver idver) {
119 return getImpl(idver);
120 }
121
122
126 private IFeatureModel[] getImpl(Idver idver) {
127 ArrayList models = (ArrayList ) fIdver2models.get(idver);
128 if (models == null) {
129 return NO_MODELS;
130 }
131 return (IFeatureModel[]) models
132 .toArray(new IFeatureModel[models.size()]);
133 }
134
135 public synchronized IFeatureModel[] get(String id) {
136 ArrayList idvers = (ArrayList ) fId2idvers.get(id);
137 if (idvers == null)
138 return NO_MODELS;
139 ArrayList allModels = new ArrayList ();
140 for (int i = 0; i < idvers.size(); i++) {
141 Idver idver = (Idver) idvers.get(i);
142 ArrayList models = (ArrayList ) fIdver2models.get(idver);
143 if (models == null) {
144 continue;
145 }
146 allModels.addAll(models);
147 }
148 return (IFeatureModel[]) allModels.toArray(new IFeatureModel[allModels
149 .size()]);
150 }
151
152 public synchronized IFeatureModel[] getAll() {
153 return getAllImpl();
154 }
155
156
159 private IFeatureModel[] getAllImpl() {
160 return (IFeatureModel[]) fModel2idver.keySet().toArray(
161 new IFeatureModel[fModel2idver.size()]);
162 }
163
164
169 public synchronized Idver remove(IFeatureModel model) {
170 return removeImpl(model);
171 }
172
173
177 private Idver removeImpl(IFeatureModel model) {
178 Idver idver = (Idver) fModel2idver.remove(model);
179 if (idver == null) {
180 return null;
181 }
182 ArrayList models = (ArrayList ) fIdver2models.get(idver);
183 for (int i = 0; i < models.size(); i++) {
184 if (models.get(i) == model) {
185 models.remove(i);
186 break;
187 }
188 }
189 if (models.size() <= 0) {
190 fIdver2models.remove(idver);
191
192 ArrayList idvers = (ArrayList ) fId2idvers.get(idver.getId());
193 for (int i = 0; i < idvers.size(); i++) {
194 if (idvers.get(i).equals(idver)) {
195 idvers.remove(i);
196 break;
197 }
198 }
199 if (idvers.size() <= 0) {
200 fId2idvers.remove(idver.getId());
201 }
202 }
203 return idver;
204 }
205
206
211 public synchronized Idver add(IFeatureModel model) {
212 removeImpl(model);
213
214 IFeature feature = model.getFeature();
215 String id = feature.getId();
216 String ver = feature.getVersion();
217 Idver idver = new Idver(id, ver);
218
219 fModel2idver.put(model, idver);
220
221 ArrayList models = (ArrayList ) fIdver2models.get(idver);
222 if (models == null) {
223 models = new ArrayList (1);
224 fIdver2models.put(idver, models);
225 }
226 models.add(model);
227
228 ArrayList idvers = (ArrayList ) fId2idvers.get(id);
229 if (idvers == null) {
230 idvers = new ArrayList (1);
231 fId2idvers.put(id, idvers);
232 }
233 idvers.add(idver);
234
235 return idver;
236 }
237
238 public synchronized String toString() {
239 IFeatureModel[] models = getAllImpl();
240 StringBuffer buf = new StringBuffer (30 * models.length);
241 buf.append("["); for (int i = 0; i < models.length; i++) {
243 if (i > 0) {
244 buf.append(", "); }
246 buf.append(get(models[i]));
247 buf.append("@"); buf.append(models[i].getFeature().getId());
249 buf.append("_"); buf.append(models[i].getFeature().getVersion());
251 }
252 buf.append("]"); return buf.toString();
254 }
255
256 }
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