/*
* 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.pvm.internal.task;
import java.util.List;
import org.jbpm.pvm.internal.model.ActivityImpl;
import org.jbpm.pvm.internal.model.ProcessDefinitionImpl;
import org.jbpm.pvm.internal.model.TransitionImpl;
import org.jbpm.pvm.internal.util.XmlUtil;
import org.jbpm.pvm.internal.xml.Parse;
import org.jbpm.pvm.internal.xml.Parser;
import org.w3c.dom.Element;
/**
* @author Tom Baeyens
*/
public class LifeCycleParser extends Parser {
public Object parseDocumentElement(Element element, Parse parse) {
ProcessDefinitionImpl lifeCycleProcess = new LifeCycle();
lifeCycleProcess.setName("TaskLifeCycle");
List<Element> stateElements = XmlUtil.elements(element, "state");
for (Element stateElement: stateElements) {
parseState(stateElement, lifeCycleProcess, parse);
}
for (Element stateElement: stateElements) {
parseTransitions(stateElement, lifeCycleProcess, parse);
}
String initialStateName = null;
if (element.hasAttribute("initial")) {
initialStateName = element.getAttribute("initial");
ActivityImpl initial = (ActivityImpl) lifeCycleProcess.getActivity(initialStateName);
if (initial!=null) {
lifeCycleProcess.setInitial(initial);
} else {
parse.addProblem("initial "+initialStateName+" doesn't exist", element);
}
}
return lifeCycleProcess;
}
public void parseTransitions(Element element, ProcessDefinitionImpl lifeCycleProcess, Parse parse) {
if (! element.hasAttribute("name")) {
parse.addProblem("state doesn't have a name: "+XmlUtil.toString(element), element);
return;
}
String stateName = element.getAttribute("name");
ActivityImpl state = (ActivityImpl) lifeCycleProcess.getActivity(stateName);
List<Element> transitionElements = XmlUtil.elements(element, "transition");
for (Element transitionElement: transitionElements) {
parseTransition(transitionElement, state, parse);
}
}
public void parseTransition(Element element, ActivityImpl state, Parse parse) {
if (! element.hasAttribute("name")) {
parse.addProblem("transition doesn't have a name: "+XmlUtil.toString(element), element);
return;
}
String transitionName = element.getAttribute("name");
if (! element.hasAttribute("to")) {
parse.addProblem("transition "+transitionName+" doesn't have a to attribute indicating the destination state: "+XmlUtil.toString(element), element);
return;
}
String destinationName = element.getAttribute("to");
ActivityImpl destination = (ActivityImpl) state.getProcessDefinition().getActivity(destinationName);
if (destination!=null) {
TransitionImpl transition = state.createOutgoingTransition();
transition.setDestination(destination);
transition.setName(transitionName);
} else {
parse.addProblem("destination "+destinationName+" of "+transitionName+" is unknown", element);
}
}
public void parseState(Element element, ProcessDefinitionImpl lifeCycleProcess, Parse parse) {
if (! element.hasAttribute("name")) {
parse.addProblem("state doesn't have an id: "+XmlUtil.toString(element), element);
return;
}
String stateName = element.getAttribute("name");
ActivityImpl state = lifeCycleProcess.createActivity(stateName);
state.setBehaviour(new LifeCycleState());
}
}