Java tutorial
/* * JBoss, Home of Professional Open Source * Copyright 2005, JBoss Inc., and individual contributors as indicated * by the @authors tag. See the copyright.txt in the distribution for a * full listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package org.jbpm.db; import java.io.Serializable; import java.util.ArrayList; import java.util.List; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.hibernate.Query; import org.hibernate.Session; import org.jbpm.JbpmException; import org.jbpm.graph.exe.ProcessInstance; import org.jbpm.taskmgmt.exe.TaskInstance; public class TaskMgmtSession implements Serializable { private static final long serialVersionUID = 1L; JbpmSession jbpmSession = null; Session session = null; public TaskMgmtSession(JbpmSession jbpmSession) { this.jbpmSession = jbpmSession; this.session = jbpmSession.getSession(); } public TaskMgmtSession(Session session) { this.session = session; this.jbpmSession = new JbpmSession(session); } /** * get the tasllist for a given actor. */ public List findTaskInstances(String actorId) { List result = null; try { Query query = session.getNamedQuery("TaskMgmtSession.findTaskInstancesByActorId"); query.setString("actorId", actorId); result = query.list(); } catch (Exception e) { log.error(e); jbpmSession.handleException(); throw new JbpmException("couldn't get task instances list for actor '" + actorId + "'", e); } return result; } /** * get all the task instances for all the given actorIds. * @return a list of task instances. An empty list is returned in case no task instances are found. */ public List findTaskInstances(List actorIds) { if (actorIds == null) return new ArrayList(0); return findTaskInstances((String[]) actorIds.toArray(new String[actorIds.size()])); } /** * get all the task instances for all the given actorIds. */ public List findTaskInstances(String[] actorIds) { List result = null; try { Query query = session.getNamedQuery("TaskMgmtSession.findTaskInstancesByActorIds"); query.setParameterList("actorIds", actorIds); result = query.list(); } catch (Exception e) { log.error(e); jbpmSession.handleException(); throw new JbpmException("couldn't get task instances list for actors '" + actorIds + "'", e); } return result; } /** * get the taskinstances for which the given actor is in the pool. */ public List findPooledTaskInstances(String actorId) { List result = null; try { Query query = session.getNamedQuery("TaskMgmtSession.findPooledTaskInstancesByActorId"); query.setString("swimlaneActorId", actorId); result = query.list(); } catch (Exception e) { log.error(e); jbpmSession.handleException(); throw new JbpmException("couldn't get pooled task instances list for actor '" + actorId + "'", e); } return result; } /** * get the taskinstances for which the given actor is in the pool. */ public List findPooledTaskInstances(List actorIds) { List result = null; try { Query query = session.getNamedQuery("TaskMgmtSession.findPooledTaskInstancesByActorIds"); query.setParameterList("actorIds", actorIds); result = query.list(); } catch (Exception e) { log.error(e); jbpmSession.handleException(); throw new JbpmException("couldn't get pooled task instances list for actors '" + actorIds + "'", e); } return result; } /** * get active taskinstances for a given token. */ public List findTaskInstancesByToken(long tokenId) { List result = null; try { Query query = session.getNamedQuery("TaskMgmtSession.findTaskInstancesByTokenId"); query.setLong("tokenId", tokenId); result = query.list(); } catch (Exception e) { log.error(e); jbpmSession.handleException(); throw new JbpmException("couldn't get task instances by token '" + tokenId + "'", e); } return result; } /** * get active taskinstances for a given token. */ public List findTaskInstancesByProcessInstance(ProcessInstance processInstance) { List result = null; try { Query query = session.getNamedQuery("TaskMgmtSession.findTaskInstancesByProcessInstance"); query.setEntity("processInstance", processInstance); result = query.list(); } catch (Exception e) { log.error(e); jbpmSession.handleException(); throw new JbpmException("couldn't get task instances by process instance '" + processInstance + "'", e); } return result; } /** * get the task instance for a given task instance-id. */ public TaskInstance loadTaskInstance(long taskInstanceId) { TaskInstance taskInstance = null; try { taskInstance = (TaskInstance) session.load(TaskInstance.class, new Long(taskInstanceId)); } catch (Exception e) { log.error(e); jbpmSession.handleException(); throw new JbpmException("couldn't get task instance '" + taskInstanceId + "'", e); } return taskInstance; } /** * get the task instance for a given task instance-id. */ public TaskInstance getTaskInstance(long taskInstanceId) { TaskInstance taskInstance = null; try { taskInstance = (TaskInstance) session.get(TaskInstance.class, new Long(taskInstanceId)); } catch (Exception e) { log.error(e); jbpmSession.handleException(); throw new JbpmException("couldn't get task instance '" + taskInstanceId + "'", e); } return taskInstance; } public List findTaskInstancesByIds(List taskInstanceIds) { List result = null; try { Query query = session.getNamedQuery("TaskMgmtSession.findTaskInstancesByIds"); query.setParameterList("taskInstanceIds", taskInstanceIds); result = query.list(); } catch (Exception e) { log.error(e); jbpmSession.handleException(); throw new JbpmException("couldn't get task instances by ids '" + taskInstanceIds + "'", e); } return result; } private static final Log log = LogFactory.getLog(TaskMgmtSession.class); }