/*

  * Copyright 2005-2007 The Kuali Foundation

  * 

  * 

  * Licensed under the Educational Community License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  * 

  * http://www.opensource.org/licenses/ecl2.php

  * 

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.kuali.rice.kew.engine.transition;

 import org.kuali.rice.kew.engine.RouteHelper;

 import org.kuali.rice.kew.engine.node.RouteNode;

 import org.kuali.rice.kew.engine.node.RouteNodeInstance;

 import org.kuali.rice.kew.exception.WorkflowException;

 /**

  * Factory which creates a {@link TransitionEngine} for the given {@link RouteNodeInstance}.  The 

  * transition engine is determined based on the type of the node instance.

  * 

  * @see TransitionEngine

  *

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public class TransitionEngineFactory {

         public static TransitionEngine createTransitionEngine(RouteNodeInstance nodeInstance) throws Exception {

                 RouteHelper helper = new RouteHelper();

                 RouteNode routeNode = nodeInstance.getRouteNode();

                 TransitionEngine engine = null;

                 if (helper.isSimpleNode(routeNode)) {

                         engine = new SimpleTransitionEngine();

                 } else if (helper.isSplitNode(routeNode)) {

                         engine = new SplitTransitionEngine();

                 } else if (helper.isJoinNode(routeNode)) {

                         engine = new JoinTransitionEngine();

                 } else if (helper.isDynamicNode(routeNode)) {

                         engine = new DynamicTransitionEngine();

                 } else if (helper.isSubProcessNode(routeNode)) {

                         engine = new SubProcessTransitionEngine();

                 } else {

                         throw new WorkflowException("Could not locate transition engine for node " + routeNode.getNodeType());

                 }

                 engine.setRouteHelper(helper);

                 return engine;

         }

 }