Source Code Cross Referenced for Services.java in  » Workflow-Engines » jbpm-jpdl-3.2.2 » org » jbpm » svc » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Workflow Engines » jbpm jpdl 3.2.2 » org.jbpm.svc 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * JBoss, Home of Professional Open Source
003:         * Copyright 2005, JBoss Inc., and individual contributors as indicated
004:         * by the @authors tag. See the copyright.txt in the distribution for a
005:         * full listing of individual contributors.
006:         *
007:         * This is free software; you can redistribute it and/or modify it
008:         * under the terms of the GNU Lesser General Public License as
009:         * published by the Free Software Foundation; either version 2.1 of
010:         * the License, or (at your option) any later version.
011:         *
012:         * This software is distributed in the hope that it will be useful,
013:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015:         * Lesser General Public License for more details.
016:         *
017:         * You should have received a copy of the GNU Lesser General Public
018:         * License along with this software; if not, write to the Free
019:         * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020:         * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
021:         */
022:        package org.jbpm.svc;
023:
024:        import java.io.Serializable;
025:        import java.util.ArrayList;
026:        import java.util.HashMap;
027:        import java.util.Iterator;
028:        import java.util.List;
029:        import java.util.Map;
030:
031:        import org.apache.commons.logging.Log;
032:        import org.apache.commons.logging.LogFactory;
033:        import org.hibernate.StaleObjectStateException;
034:        import org.jbpm.JbpmContext;
035:        import org.jbpm.JbpmException;
036:        import org.jbpm.graph.exe.ProcessInstance;
037:        import org.jbpm.logging.LoggingService;
038:        import org.jbpm.msg.MessageService;
039:        import org.jbpm.persistence.JbpmPersistenceException;
040:        import org.jbpm.persistence.PersistenceService;
041:        import org.jbpm.persistence.db.StaleObjectLogConfigurer;
042:        import org.jbpm.scheduler.SchedulerService;
043:        import org.jbpm.security.AuthenticationService;
044:        import org.jbpm.security.AuthorizationService;
045:        import org.jbpm.svc.save.CascadeSaveOperation;
046:        import org.jbpm.svc.save.CheckUnpersistableVariablesOperation;
047:        import org.jbpm.svc.save.HibernateSaveOperation;
048:        import org.jbpm.svc.save.SaveLogsOperation;
049:        import org.jbpm.svc.save.SaveOperation;
050:        import org.jbpm.tx.TxService;
051:
052:        public class Services implements  Serializable {
053:
054:            private static final long serialVersionUID = 1L;
055:
056:            public static final String SERVICENAME_AUTHENTICATION = "authentication";
057:            public static final String SERVICENAME_AUTHORIZATION = "authorization";
058:            public static final String SERVICENAME_TX = "tx";
059:            public static final String SERVICENAME_LOGGING = "logging";
060:            public static final String SERVICENAME_MESSAGE = "message";
061:            public static final String SERVICENAME_PERSISTENCE = "persistence";
062:            public static final String SERVICENAME_SCHEDULER = "scheduler";
063:            public static final String SERVICENAME_JCR = "jcr";
064:            public static final String SERVICENAME_ADDRESSRESOLVER = "addressresolver";
065:
066:            static final List defaultSaveOperations = new ArrayList();
067:
068:            static {
069:                defaultSaveOperations
070:                        .add(new CheckUnpersistableVariablesOperation());
071:                // first we save the runtime data (process instance)
072:                defaultSaveOperations.add(new HibernateSaveOperation());
073:                // then we insert the logs cause the logs can have references 
074:                // to the runtime data
075:                defaultSaveOperations.add(new SaveLogsOperation());
076:                defaultSaveOperations.add(new CascadeSaveOperation());
077:            }
078:
079:            Map serviceFactories = null;
080:            Map services = null;
081:            List serviceNames = null;
082:            List saveOperations = null;
083:
084:            public static Service getCurrentService(String name) {
085:                return getCurrentService(name, true);
086:            }
087:
088:            public static Service getCurrentService(String name,
089:                    boolean isRequired) {
090:                Service service = null;
091:                JbpmContext jbpmContext = JbpmContext.getCurrentJbpmContext();
092:                if (jbpmContext != null) {
093:                    service = jbpmContext.getServices().getService(name);
094:                }
095:                if (isRequired && (service == null)) {
096:                    throw new JbpmServiceException("service '" + name
097:                            + "' unavailable");
098:                }
099:                return service;
100:            }
101:
102:            public Services(Map serviceFactories) {
103:                this (serviceFactories,
104:                        new ArrayList(serviceFactories.keySet()), null);
105:            }
106:
107:            public Services(Map serviceFactories, List serviceNames,
108:                    List saveOperations) {
109:                this .serviceFactories = serviceFactories;
110:                this .serviceNames = serviceNames;
111:                if (saveOperations != null) {
112:                    this .saveOperations = saveOperations;
113:                } else {
114:                    this .saveOperations = defaultSaveOperations;
115:                }
116:            }
117:
118:            public void setSaveOperations(List saveOperations) {
119:                this .saveOperations = saveOperations;
120:            }
121:
122:            public Map getServiceFactories() {
123:                if (serviceFactories == null) {
124:                    serviceFactories = new HashMap();
125:                }
126:                return serviceFactories;
127:            }
128:
129:            public ServiceFactory getServiceFactory(String name) {
130:                return (ServiceFactory) getServiceFactories().get(name);
131:            }
132:
133:            public boolean hasService(String name) {
134:                boolean hasService = false;
135:                if (services != null) {
136:                    hasService = services.containsKey(name);
137:                }
138:                return hasService;
139:            }
140:
141:            public Service getService(String name) {
142:                if (services == null) {
143:                    services = new HashMap();
144:                }
145:                Service service = (Service) services.get(name);
146:                if (service == null) {
147:                    ServiceFactory serviceFactory = getServiceFactory(name);
148:                    if (serviceFactory != null) {
149:                        service = serviceFactory.openService();
150:                        services.put(name, service);
151:                    }
152:                }
153:                return service;
154:            }
155:
156:            public void save(ProcessInstance processInstance,
157:                    JbpmContext jbpmContext) {
158:                Iterator iter = saveOperations.iterator();
159:
160:                if (log.isDebugEnabled()) {
161:                    if (saveOperations == defaultSaveOperations) {
162:                        log.debug("executing default save operations");
163:                    } else {
164:                        log.debug("executing custom save operations");
165:                    }
166:                }
167:
168:                while (iter.hasNext()) {
169:                    SaveOperation saveOperation = (SaveOperation) iter.next();
170:                    saveOperation.save(processInstance, jbpmContext);
171:                }
172:            }
173:
174:            // services /////////////////////////////////////////////////////////////////
175:
176:            public AuthenticationService getAuthenticationService() {
177:                return (AuthenticationService) getService(SERVICENAME_AUTHENTICATION);
178:            }
179:
180:            public AuthorizationService getAuthorizationService() {
181:                return (AuthorizationService) getService(SERVICENAME_AUTHORIZATION);
182:            }
183:
184:            public LoggingService getLoggingService() {
185:                return (LoggingService) getService(SERVICENAME_LOGGING);
186:            }
187:
188:            public MessageService getMessageService() {
189:                return (MessageService) getService(SERVICENAME_MESSAGE);
190:            }
191:
192:            public PersistenceService getPersistenceService() {
193:                return (PersistenceService) getService(SERVICENAME_PERSISTENCE);
194:            }
195:
196:            public SchedulerService getSchedulerService() {
197:                return (SchedulerService) getService(SERVICENAME_SCHEDULER);
198:            }
199:
200:            public TxService getTxService() {
201:                return (TxService) getService(SERVICENAME_TX);
202:            }
203:
204:            public void setAuthenticationService(
205:                    AuthenticationService authenticationService) {
206:                services.put(SERVICENAME_AUTHENTICATION, authenticationService);
207:            }
208:
209:            public void setAuthorizationService(
210:                    AuthorizationService authorizationService) {
211:                services.put(SERVICENAME_AUTHORIZATION, authorizationService);
212:            }
213:
214:            public void setLoggingService(LoggingService loggingService) {
215:                services.put(SERVICENAME_LOGGING, loggingService);
216:            }
217:
218:            public void setMessageService(MessageService messageService) {
219:                services.put(SERVICENAME_MESSAGE, messageService);
220:            }
221:
222:            public void setPersistenceService(
223:                    PersistenceService persistenceService) {
224:                services.put(SERVICENAME_PERSISTENCE, persistenceService);
225:            }
226:
227:            public void setSchedulerService(SchedulerService schedulerService) {
228:                services.put(SERVICENAME_SCHEDULER, schedulerService);
229:            }
230:
231:            public void setTxService(TxService txService) {
232:                services.put(SERVICENAME_TX, txService);
233:            }
234:
235:            public void close() {
236:                if (services != null) {
237:                    Map closeExceptions = new HashMap();
238:                    Throwable firstException = null;
239:                    Iterator iter = serviceNames.iterator();
240:                    while (iter.hasNext()) {
241:                        String serviceName = (String) iter.next();
242:                        Service service = (Service) services.get(serviceName);
243:                        if (service != null) {
244:                            try {
245:                                log.debug("closing service '" + serviceName
246:                                        + "': " + service);
247:                                service.close();
248:                            } catch (JbpmPersistenceException e) {
249:                                // if this is a stale object exception, the jbpm configuration has control over the logging
250:                                if ("org.hibernate.StaleObjectStateException"
251:                                        .equals(e.getCause().getClass()
252:                                                .getName())) {
253:                                    log.info("problem closing service '"
254:                                            + serviceName
255:                                            + "': optimistic locking failed");
256:                                    StaleObjectLogConfigurer.staleObjectExceptionsLog
257:                                            .error(
258:                                                    "problem closing service '"
259:                                                            + serviceName
260:                                                            + "': optimistic locking failed",
261:                                                    e);
262:                                } else {
263:                                    log.error("problem closing service '"
264:                                            + serviceName + "'", e);
265:                                }
266:                            } catch (Exception e) {
267:                                // NOTE that Error's are not caught because that might halt the JVM and mask the original Error.
268:                                log.error("problem closing service '"
269:                                        + serviceName + "'", e);
270:                                closeExceptions.put(serviceName, e);
271:                                if (firstException == null) {
272:                                    firstException = e;
273:                                }
274:                            }
275:                        }
276:                    }
277:                    if (!closeExceptions.isEmpty()) {
278:                        throw new JbpmException("problem closing services "
279:                                + closeExceptions, firstException);
280:                    }
281:                }
282:            }
283:
284:            public static void assignId(Object object) {
285:                JbpmContext jbpmContext = JbpmContext.getCurrentJbpmContext();
286:                if (jbpmContext != null) {
287:                    // give this process instance an id
288:                    Services services = jbpmContext.getServices();
289:                    if (services.hasService(Services.SERVICENAME_PERSISTENCE)) {
290:                        PersistenceService persistenceService = services
291:                                .getPersistenceService();
292:                        persistenceService.assignId(object);
293:                    }
294:                }
295:            }
296:
297:            private static Log log = LogFactory.getLog(Services.class);
298:        }
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