Source Code Cross Referenced for JetspeedPortletFactory.java in  » Portal » jetspeed-2.1.3 » org » apache » jetspeed » factory » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Portal » jetspeed 2.1.3 » org.apache.jetspeed.factory 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Licensed to the Apache Software Foundation (ASF) under one or more
003:         * contributor license agreements.  See the NOTICE file distributed with
004:         * this work for additional information regarding copyright ownership.
005:         * The ASF licenses this file to You under the Apache License, Version 2.0
006:         * (the "License"); you may not use this file except in compliance with
007:         * the License.  You may obtain a copy of the License at
008:         * 
009:         *      http://www.apache.org/licenses/LICENSE-2.0
010:         * 
011:         * Unless required by applicable law or agreed to in writing, software
012:         * distributed under the License is distributed on an "AS IS" BASIS,
013:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         * See the License for the specific language governing permissions and
015:         * limitations under the License.
016:         */
017:        package org.apache.jetspeed.factory;
018:
019:        import java.util.Collections;
020:        import java.util.HashMap;
021:        import java.util.Iterator;
022:        import java.util.Map;
023:
024:        import javax.portlet.Portlet;
025:        import javax.portlet.PortletConfig;
026:        import javax.portlet.PortletContext;
027:        import javax.portlet.PortletException;
028:        import javax.portlet.PreferencesValidator;
029:        import javax.portlet.UnavailableException;
030:        import javax.servlet.ServletContext;
031:
032:        import org.apache.commons.logging.Log;
033:        import org.apache.commons.logging.LogFactory;
034:        import org.apache.jetspeed.container.JetspeedPortletConfig;
035:        import org.apache.jetspeed.container.PortalAccessor;
036:        import org.apache.jetspeed.om.common.portlet.PortletApplication;
037:        import org.apache.jetspeed.om.common.portlet.PortletDefinitionComposite;
038:        import org.apache.jetspeed.portlet.PortletObjectProxy;
039:        import org.apache.pluto.om.portlet.PortletDefinition;
040:
041:        /**
042:         * <p>
043:         * JetspeedPortletFactory
044:         * </p>
045:         * <p>
046:         *
047:         * </p>
048:         * @author <a href="mailto:weaver@apache.org">Scott T. Weaver</a>
049:         * @version $Id: JetspeedPortletFactory.java 593513 2007-11-09 12:48:34Z woonsan $
050:         *
051:         */
052:        public class JetspeedPortletFactory implements  PortletFactory {
053:
054:            private Map portletCache;
055:            private Map validatorCache;
056:
057:            private static final Log log = LogFactory
058:                    .getLog(JetspeedPortletFactory.class);
059:            private final Map classLoaderMap;
060:
061:            /**
062:             * Flag whether this factory will create proxy instances for actual portlet instances or not.
063:             */
064:            private boolean portletProxyUsed;
065:
066:            /**
067:             * Flag whether the instantiated proxy will switch edit_defaults mode to edit mode automatically or not.
068:             */
069:            private boolean autoSwitchEditDefaultsModeToEditMode;
070:
071:            /**
072:             * Flag whether the instantiated proxy will switch config mode to built-in config edit page or not.
073:             */
074:            private boolean autoSwitchConfigMode;
075:
076:            private String customConfigModePortletUniqueName;
077:
078:            public JetspeedPortletFactory() {
079:                this (false, false);
080:            }
081:
082:            public JetspeedPortletFactory(boolean autoSwitchConfigMode,
083:                    boolean autoSwitchEditDefaultsModeToEditMode) {
084:                this .portletCache = Collections.synchronizedMap(new HashMap());
085:                this .validatorCache = Collections
086:                        .synchronizedMap(new HashMap());
087:                classLoaderMap = Collections.synchronizedMap(new HashMap());
088:
089:                this .autoSwitchConfigMode = autoSwitchConfigMode;
090:                this .autoSwitchEditDefaultsModeToEditMode = autoSwitchEditDefaultsModeToEditMode;
091:
092:                this .portletProxyUsed = (this .autoSwitchConfigMode || this .autoSwitchEditDefaultsModeToEditMode);
093:            }
094:
095:            public void setPortletProxyUsed(boolean portletProxyUsed) {
096:                this .portletProxyUsed = portletProxyUsed;
097:            }
098:
099:            public boolean getPortletProxyUsed() {
100:                return this .portletProxyUsed;
101:            }
102:
103:            public void setCustomConfigModePortletUniqueName(
104:                    String customConfigModePortletUniqueName) {
105:                this .customConfigModePortletUniqueName = customConfigModePortletUniqueName;
106:            }
107:
108:            public String getCustomConfigModePortletUniqueName() {
109:                return this .customConfigModePortletUniqueName;
110:            }
111:
112:            public void registerPortletApplication(PortletApplication pa,
113:                    ClassLoader cl) {
114:                synchronized (classLoaderMap) {
115:                    unregisterPortletApplication(pa);
116:                    classLoaderMap.put(pa.getId(), cl);
117:                }
118:            }
119:
120:            public void unregisterPortletApplication(PortletApplication pa) {
121:                synchronized (classLoaderMap) {
122:                    synchronized (portletCache) {
123:                        ClassLoader cl = (ClassLoader) classLoaderMap.remove(pa
124:                                .getId());
125:                        if (cl != null) {
126:                            ClassLoader currentContextClassLoader = Thread
127:                                    .currentThread().getContextClassLoader();
128:
129:                            Iterator portletDefinitions = pa
130:                                    .getPortletDefinitions().iterator();
131:                            while (portletDefinitions.hasNext()) {
132:                                PortletDefinition pd = (PortletDefinition) portletDefinitions
133:                                        .next();
134:                                String pdId = pd.getId().toString();
135:                                Portlet portlet = (Portlet) portletCache
136:                                        .remove(pdId);
137:                                if (portlet != null) {
138:                                    try {
139:                                        Thread.currentThread()
140:                                                .setContextClassLoader(cl);
141:                                        portlet.destroy();
142:                                    } finally {
143:                                        Thread
144:                                                .currentThread()
145:                                                .setContextClassLoader(
146:                                                        currentContextClassLoader);
147:                                    }
148:                                }
149:                                validatorCache.remove(pdId);
150:                            }
151:                        }
152:                    }
153:                }
154:            }
155:
156:            public PreferencesValidator getPreferencesValidator(
157:                    PortletDefinition pd) {
158:                PreferencesValidator validator = null;
159:                try {
160:                    String pdId = pd.getId().toString();
161:
162:                    synchronized (validatorCache) {
163:                        validator = (PreferencesValidator) validatorCache
164:                                .get(pdId);
165:                        if (validator == null) {
166:                            String className = ((PortletDefinitionComposite) pd)
167:                                    .getPreferenceValidatorClassname();
168:                            if (className != null) {
169:                                PortletApplication pa = (PortletApplication) pd
170:                                        .getPortletApplicationDefinition();
171:                                ClassLoader paCl = (ClassLoader) classLoaderMap
172:                                        .get(pa.getId());
173:                                if (paCl == null) {
174:                                    throw new UnavailableException(
175:                                            "Portlet Application "
176:                                                    + pa.getName()
177:                                                    + " not available");
178:                                }
179:
180:                                ClassLoader currentContextClassLoader = Thread
181:                                        .currentThread()
182:                                        .getContextClassLoader();
183:                                try {
184:                                    Class clazz = paCl.loadClass(className);
185:                                    try {
186:                                        Thread.currentThread()
187:                                                .setContextClassLoader(paCl);
188:                                        validator = (PreferencesValidator) clazz
189:                                                .newInstance();
190:                                        validatorCache.put(pdId, validator);
191:                                    } finally {
192:                                        Thread
193:                                                .currentThread()
194:                                                .setContextClassLoader(
195:                                                        currentContextClassLoader);
196:                                    }
197:                                } catch (Exception e) {
198:                                    String msg = "Cannot create PreferencesValidator instance "
199:                                            + className
200:                                            + " for Portlet "
201:                                            + pd.getName();
202:                                    log.error(msg, e);
203:                                }
204:                            }
205:                        }
206:                    }
207:                } catch (Exception e) {
208:                    log.error(e);
209:                }
210:                return validator;
211:            }
212:
213:            /**
214:             * Gets a portlet by either creating it or returning a handle to it from the portlet 'cache'
215:             * 
216:             * @param portletDefinition The definition of the portlet
217:             * @return PortletInstance 
218:             * @throws PortletException
219:             */
220:            public PortletInstance getPortletInstance(
221:                    ServletContext servletContext, PortletDefinition pd)
222:                    throws PortletException {
223:                PortletInstance portlet = null;
224:                String pdId = pd.getId().toString();
225:                PortletApplication pa = (PortletApplication) pd
226:                        .getPortletApplicationDefinition();
227:
228:                try {
229:                    synchronized (portletCache) {
230:                        portlet = (PortletInstance) portletCache.get(pdId);
231:                        if (null != portlet) {
232:                            return portlet;
233:                        }
234:
235:                        ClassLoader paCl = (ClassLoader) classLoaderMap.get(pa
236:                                .getId());
237:                        if (paCl == null) {
238:                            throw new UnavailableException(
239:                                    "Portlet Application " + pa.getName()
240:                                            + " not available");
241:                        }
242:
243:                        ClassLoader currentContextClassLoader = Thread
244:                                .currentThread().getContextClassLoader();
245:
246:                        try {
247:                            Class clazz = paCl.loadClass(pd.getClassName());
248:                            try {
249:                                Thread.currentThread().setContextClassLoader(
250:                                        paCl);
251:                                // wrap new Portlet inside PortletInstance which ensures the destroy
252:                                // method will wait for all its invocation threads to complete
253:                                // and thereby releasing all its ClassLoader locks as needed for local portlets.
254:
255:                                if (this .portletProxyUsed
256:                                        && !PortletObjectProxy
257:                                                .isPortletObjectProxied()) {
258:                                    portlet = new JetspeedPortletProxyInstance(
259:                                            pd.getName(),
260:                                            (Portlet) clazz.newInstance(),
261:                                            this .autoSwitchEditDefaultsModeToEditMode,
262:                                            this .autoSwitchConfigMode,
263:                                            this .customConfigModePortletUniqueName);
264:                                } else {
265:                                    portlet = new JetspeedPortletInstance(pd
266:                                            .getName(), (Portlet) clazz
267:                                            .newInstance());
268:                                }
269:                            } finally {
270:                                Thread.currentThread().setContextClassLoader(
271:                                        currentContextClassLoader);
272:                            }
273:                        } catch (Exception e) {
274:                            String msg = "Cannot create Portlet instance "
275:                                    + pd.getClassName()
276:                                    + " for Portlet Application "
277:                                    + pa.getName();
278:                            log.error(msg, e);
279:                            throw new UnavailableException(msg);
280:                        }
281:
282:                        PortletContext portletContext = PortalAccessor
283:                                .createPortletContext(servletContext, pa);
284:                        PortletConfig portletConfig = PortalAccessor
285:                                .createPortletConfig(portletContext, pd);
286:
287:                        try {
288:                            try {
289:                                Thread.currentThread().setContextClassLoader(
290:                                        paCl);
291:                                portlet.init(portletConfig);
292:                            } finally {
293:                                Thread.currentThread().setContextClassLoader(
294:                                        currentContextClassLoader);
295:                            }
296:                        } catch (PortletException e1) {
297:                            log.error("Failed to initialize Portlet "
298:                                    + pd.getClassName()
299:                                    + " for Portlet Application "
300:                                    + pa.getName(), e1);
301:                            throw e1;
302:                        }
303:                        portletCache.put(pdId, portlet);
304:                    }
305:                } catch (PortletException pe) {
306:                    throw pe;
307:                } catch (Throwable e) {
308:                    log.error("PortletFactory: Failed to load portlet "
309:                            + pd.getClassName(), e);
310:                    throw new UnavailableException("Failed to load portlet "
311:                            + pd.getClassName() + ": " + e.toString());
312:                }
313:                return portlet;
314:            }
315:
316:            public void updatePortletConfig(PortletDefinition pd) {
317:                if (pd != null) {
318:                    //System.out.println("$$$$ updating portlet config for " + pd.getName());
319:                    String key = pd.getId().toString();
320:                    PortletInstance instance = (PortletInstance) portletCache
321:                            .get(key);
322:                    if (instance != null) {
323:                        JetspeedPortletConfig config = (JetspeedPortletConfig) instance
324:                                .getConfig();
325:                        config.setPortletDefinition(pd);
326:                    }
327:                }
328:            }
329:
330:            public ClassLoader getPortletApplicationClassLoader(
331:                    PortletApplication pa) {
332:                synchronized (classLoaderMap) {
333:                    if (pa != null) {
334:                        return (ClassLoader) classLoaderMap.get(pa.getId());
335:                    }
336:                    return null;
337:                }
338:            }
339:
340:            public boolean isPortletApplicationRegistered(PortletApplication pa) {
341:                return getPortletApplicationClassLoader(pa) != null;
342:            }
343:        }
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