001
014
015 package com.liferay.portal.kernel.plugin;
016
017 import com.liferay.portal.kernel.util.GetterUtil;
018 import com.liferay.portal.kernel.util.StringBundler;
019 import com.liferay.portal.kernel.util.StringPool;
020 import com.liferay.portal.kernel.util.Validator;
021
022 import java.io.Serializable;
023
024 import java.util.Map;
025 import java.util.StringTokenizer;
026 import java.util.concurrent.ConcurrentHashMap;
027
028
031 public class Version implements Comparable<Version>, Serializable {
032
033 public static final String UNKNOWN = "unknown";
034
035 public static Version getInstance(String version) {
036 Version versionObj = _versions.get(version);
037
038 if (versionObj == null) {
039 versionObj = new Version(version);
040
041 _versions.put(version, versionObj);
042 }
043
044 return versionObj;
045 }
046
047 public static Version incrementBugFix(Version version) {
048 String bugFix = version.getBugFix();
049
050 int bugFixInt = GetterUtil.getInteger(bugFix);
051
052 if (bugFixInt > 0) {
053 bugFix = String.valueOf(bugFixInt + 1);
054 }
055
056 return getInstance(
057 _toString(
058 version.getMajor(), version.getMinor(), bugFix,
059 version.getBuildNumber()));
060 }
061
062 public static Version incrementBuildNumber(Version version) {
063 String buildNumber = version.getBuildNumber();
064
065 int buildNumberInt = GetterUtil.getInteger(buildNumber);
066
067 if (buildNumberInt > 0) {
068 buildNumber = String.valueOf(buildNumberInt + 1);
069 }
070
071 return getInstance(
072 _toString(
073 version.getMajor(), version.getMinor(), version.getBugFix(),
074 buildNumber));
075 }
076
077 public static Version incrementMajor(Version version) {
078 String major = version.getMajor();
079
080 int majorInt = GetterUtil.getInteger(major);
081
082 if (majorInt > 0) {
083 major = String.valueOf(majorInt + 1);
084 }
085
086 return getInstance(
087 _toString(
088 major, version.getMinor(), version.getBugFix(),
089 version.getBuildNumber()));
090 }
091
092 public static Version incrementMinor(Version version) {
093 String minor = version.getMinor();
094
095 int minorInt = GetterUtil.getInteger(minor);
096
097 if (minorInt > 0) {
098 minor = String.valueOf(minorInt + 1);
099 }
100
101 return getInstance(
102 _toString(
103 version.getMajor(), minor, version.getBugFix(),
104 version.getBuildNumber()));
105 }
106
107 public int compareTo(Version version) {
108 if (version == null) {
109 return 1;
110 }
111
112
113
114 if (version.toString().equals(UNKNOWN)) {
115 return 1;
116 }
117
118 if (toString().equals(UNKNOWN)) {
119 return -1;
120 }
121
122 int result = getMajor().compareTo(version.getMajor());
123
124 if (result != 0) {
125 return result;
126 }
127
128 result = getMinor().compareTo(version.getMinor());
129
130 if (result != 0) {
131 return result;
132 }
133
134 result = getBugFix().compareTo(version.getBugFix());
135
136 if (result != 0) {
137 return result;
138 }
139
140 return getBuildNumber().compareTo(version.getBuildNumber());
141 }
142
143 public boolean equals(Object obj) {
144 if ((obj == null) || (!(obj instanceof Version))) {
145 return false;
146 }
147
148 Version version = (Version)obj;
149
150 String versionString1 = toString();
151 String versionString2 = version.toString();
152
153 if (versionString1.equals(UNKNOWN) || versionString2.equals(UNKNOWN)) {
154 return false;
155 }
156
157 return versionString1.equals(versionString2);
158 }
159
160 public String getBugFix() {
161 if (_bugFix == null) {
162 return "0";
163 }
164
165 return _bugFix;
166 }
167
168 public String getBuildNumber() {
169 return _buildNumber;
170 }
171
172 public String getMajor() {
173 if (_major == null) {
174 return "0";
175 }
176
177 return _major;
178 }
179
180 public String getMinor() {
181 if (_minor == null) {
182 return "0";
183 }
184
185 return _minor;
186 }
187
188 public int hashCode() {
189 return toString().hashCode();
190 }
191
192 public boolean includes(Version version) {
193 if (equals(version)) {
194 return true;
195 }
196
197 if (getMajor().equals(StringPool.STAR)) {
198 return true;
199 }
200
201 if (getMajor().equals(version.getMajor())) {
202 if (getMinor().equals(StringPool.STAR)) {
203 return true;
204 }
205
206 if (getMinor().equals(version.getMinor())) {
207 if (getBugFix().equals(StringPool.STAR)) {
208 return true;
209 }
210
211 if (getBugFix().equals(version.getBugFix())) {
212 if (getBuildNumber().equals(StringPool.STAR) ||
213 getBuildNumber().equals(version.getBuildNumber())) {
214
215 return true;
216 }
217 }
218 else if (_contains(getBugFix(), version.getBugFix())) {
219 return true;
220 }
221 }
222 else if (_contains(getMinor(), version.getMinor())) {
223 return true;
224 }
225 }
226 else if (_contains(getMajor(), version.getMajor())) {
227 return true;
228 }
229
230 return false;
231 }
232
233 public boolean isLaterVersionThan(String version) {
234 if (compareTo(getInstance(version)) > 0) {
235 return true;
236 }
237 else {
238 return false;
239 }
240 }
241
242 public boolean isPreviousVersionThan(String version) {
243 if (compareTo(getInstance(version)) < 0) {
244 return true;
245 }
246 else {
247 return false;
248 }
249 }
250
251 public boolean isSameVersionAs(String version) {
252 if (compareTo(getInstance(version)) == 0) {
253 return true;
254 }
255 else {
256 return false;
257 }
258 }
259
260 public String toString() {
261 return _toString(_major, _minor, _bugFix, _buildNumber);
262 }
263
264 protected Version(String version) {
265 StringTokenizer st = new StringTokenizer(version, _SEPARATOR);
266
267 _major = st.nextToken();
268
269 if (st.hasMoreTokens()) {
270 _minor = st.nextToken();
271 }
272
273 if (st.hasMoreTokens()) {
274 _bugFix = st.nextToken();
275 }
276
277 StringBundler sb = new StringBundler();
278
279 while (st.hasMoreTokens()) {
280 sb.append(st.nextToken());
281
282 if (st.hasMoreTokens()) {
283 sb.append(_SEPARATOR);
284 }
285 }
286
287 _buildNumber = sb.toString();
288 }
289
290 private static boolean _contains(
291 String containerString, String numberString) {
292
293 if (containerString.endsWith(StringPool.PLUS)) {
294 String containerNumberString = containerString.substring(
295 0, containerString.length() - 1);
296
297 try {
298 int containerNumber = Integer.parseInt(containerNumberString);
299 int number = Integer.parseInt(numberString);
300
301 return containerNumber <= number;
302 }
303 catch (NumberFormatException nfe) {
304 return false;
305 }
306 }
307
308 return false;
309 }
310
311 private static String _toString(
312 String major, String minor, String bugFix, String buildNumber) {
313
314 StringBundler sb = new StringBundler();
315
316 sb.append(major);
317
318 if (Validator.isNotNull(minor)) {
319 sb.append(_SEPARATOR);
320 sb.append(minor);
321
322 if (Validator.isNotNull(bugFix)) {
323 sb.append(_SEPARATOR);
324 sb.append(bugFix);
325
326 if (Validator.isNotNull(buildNumber)) {
327 sb.append(_SEPARATOR);
328 sb.append(buildNumber);
329 }
330 }
331 }
332
333 return sb.toString();
334 }
335
336 private static final String _SEPARATOR = StringPool.PERIOD;
337
338 private static Map<String, Version> _versions =
339 new ConcurrentHashMap<String, Version>();
340
341 private String _bugFix;
342 private String _buildNumber;
343 private String _major;
344 private String _minor;
345
346 }