/* * 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 org.hibernate.Session; /** * contains queries to search the database for process instances and tokens * based on process variableInstances. * <p><b>NOTE: TODO</b></p> */ public class ContextSession { final Session session; /** @deprecated */ final JbpmSession jbpmSession; /** * @deprecated use {@link #ContextSession(Session)} instead */ public ContextSession(JbpmSession jbpmSession) { this.jbpmSession = jbpmSession; this.session = jbpmSession.getSession(); } public ContextSession(Session session) { this.session = session; this.jbpmSession = null; } /* * converts all newly created variable values that are inside the * variableUpdates into {@link VariableInstance}s * as a preparation for storage in the database. public void mergeVariableUpdates(Map variableUpdates, Map variableInstances, TokenVariableMap tokenVariableMap, TaskInstance taskInstance, Token token) { if (variableUpdates!=null) { Iterator iter = variableUpdates.entrySet().iterator(); while (iter.hasNext()) { Map.Entry entry = (Map.Entry) iter.next(); String name = (String) entry.getKey(); Object value = entry.getValue(); VariableInstance variableInstance = (variableInstances!=null ? (VariableInstance) variableInstances.get(name) : null); if ( (variableInstance!=null) && (!variableInstance.supports(value)) ) { // delete the old variable instance if (taskInstance!=null) { log.debug("task variable type change. deleting '"+name+"' from task instance '"+taskInstance+"'"); taskInstance.deleteVariable(name); } else if (tokenVariableMap!=null) { log.debug("process variable type change. deleting '"+name+"' from token '"+token+"'"); tokenVariableMap.deleteVariable(name); } // make sure the variable instance gets recreated below variableInstances.remove(name); } if ( (variableInstances==null) || (! variableInstances.containsKey(name)) ) { // it's a creation variableInstance = VariableInstance.create(token, name, value); // set the apropriate backpointers if (tokenVariableMap!=null) { log.debug("created variable instance '"+name+"' for token '"+token+"': "+value); tokenVariableMap.addVariableInstance(variableInstance); } if (taskInstance!=null) { log.debug("created variable instance '"+name+"' for task instance '"+taskInstance+"': "+value); taskInstance.addVariableInstance(variableInstance); } } else if (variableInstance!=null) { // it's an update variableInstance = (VariableInstance) variableInstances.get(name); if (taskInstance!=null) { log.debug("updated task variable instance '"+name+"' to '"+value+"' for '"+taskInstance+"'"); } else { log.debug("updated process variable instance '"+name+"' to '"+value+"' for '"+token+"'"); } variableInstance.setValue(value); } } } } public void updateProcessContextVariables(ContextInstance contextInstance) { if (contextInstance!=null) { Map tokenVariableMaps = contextInstance.getTokenVariableMaps(); if (tokenVariableMaps!=null) { Iterator iter = tokenVariableMaps.values().iterator(); while (iter.hasNext()) { TokenVariableMap tokenVariableMap = (TokenVariableMap) iter.next(); mergeVariableUpdates(tokenVariableMap.getVariableUpdates(), tokenVariableMap.getVariableInstances(), tokenVariableMap, null, tokenVariableMap.getToken()); } } } } public void updateTaskInstanceVariables(TaskMgmtInstance taskMgmtInstance) { if (taskMgmtInstance!=null) { Collection updatedTaskInstances = taskMgmtInstance.getTaskInstancesWithVariableUpdates(); if (updatedTaskInstances!=null) { Iterator iter = updatedTaskInstances.iterator(); while (iter.hasNext()) { TaskInstance taskInstance = (TaskInstance) iter.next(); mergeVariableUpdates(taskInstance.getVariableUpdates(), taskInstance.getVariableInstances(), null, taskInstance, taskInstance.getToken()); } } } } */ // private static final Log log = LogFactory.getLog(ContextSession.class); }