/*
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* JBoss, Home of Professional Open Source
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* Copyright 2005, JBoss Inc., and individual contributors as indicated
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* by the @authors tag. See the copyright.txt in the distribution for a
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* full listing of individual contributors.
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*
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this software; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
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*/
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package org.jbpm.pvm.internal.task;
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import java.util.List;
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import org.jbpm.pvm.internal.model.ActivityImpl;
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import org.jbpm.pvm.internal.model.ProcessDefinitionImpl;
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import org.jbpm.pvm.internal.model.TransitionImpl;
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import org.jbpm.pvm.internal.util.XmlUtil;
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import org.jbpm.pvm.internal.xml.Parse;
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import org.jbpm.pvm.internal.xml.Parser;
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import org.w3c.dom.Element;
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/**
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* @author Tom Baeyens
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*/
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public class LifeCycleParser extends Parser {
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public Object parseDocumentElement(Element element, Parse parse) {
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ProcessDefinitionImpl lifeCycleProcess = new LifeCycle();
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lifeCycleProcess.setName("TaskLifeCycle");
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List<Element> stateElements = XmlUtil.elements(element, "state");
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for (Element stateElement: stateElements) {
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parseState(stateElement, lifeCycleProcess, parse);
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}
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for (Element stateElement: stateElements) {
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parseTransitions(stateElement, lifeCycleProcess, parse);
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}
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String initialStateName = null;
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if (element.hasAttribute("initial")) {
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initialStateName = element.getAttribute("initial");
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ActivityImpl initial = (ActivityImpl) lifeCycleProcess.getActivity(initialStateName);
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if (initial!=null) {
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lifeCycleProcess.setInitial(initial);
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} else {
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parse.addProblem("initial "+initialStateName+" doesn't exist", element);
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}
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}
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return lifeCycleProcess;
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}
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public void parseTransitions(Element element, ProcessDefinitionImpl lifeCycleProcess, Parse parse) {
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if (! element.hasAttribute("name")) {
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parse.addProblem("state doesn't have a name: "+XmlUtil.toString(element), element);
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return;
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}
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String stateName = element.getAttribute("name");
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ActivityImpl state = (ActivityImpl) lifeCycleProcess.getActivity(stateName);
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List<Element> transitionElements = XmlUtil.elements(element, "transition");
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for (Element transitionElement: transitionElements) {
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parseTransition(transitionElement, state, parse);
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}
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}
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public void parseTransition(Element element, ActivityImpl state, Parse parse) {
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if (! element.hasAttribute("name")) {
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parse.addProblem("transition doesn't have a name: "+XmlUtil.toString(element), element);
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return;
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}
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String transitionName = element.getAttribute("name");
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if (! element.hasAttribute("to")) {
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parse.addProblem("transition "+transitionName+" doesn't have a to attribute indicating the destination state: "+XmlUtil.toString(element), element);
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return;
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}
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String destinationName = element.getAttribute("to");
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ActivityImpl destination = (ActivityImpl) state.getProcessDefinition().getActivity(destinationName);
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if (destination!=null) {
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TransitionImpl transition = state.createOutgoingTransition();
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transition.setDestination(destination);
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transition.setName(transitionName);
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} else {
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parse.addProblem("destination "+destinationName+" of "+transitionName+" is unknown", element);
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}
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}
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public void parseState(Element element, ProcessDefinitionImpl lifeCycleProcess, Parse parse) {
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if (! element.hasAttribute("name")) {
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parse.addProblem("state doesn't have an id: "+XmlUtil.toString(element), element);
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return;
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}
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String stateName = element.getAttribute("name");
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ActivityImpl state = lifeCycleProcess.createActivity(stateName);
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state.setActivityBehaviour(new LifeCycleState());
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}
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}
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