001/**
002 * Copyright 2005-2016 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.kuali.rice.kew.engine.transition;
017
018import org.kuali.rice.kew.api.exception.WorkflowException;
019import org.kuali.rice.kew.engine.RouteHelper;
020import org.kuali.rice.kew.engine.node.RouteNode;
021import org.kuali.rice.kew.engine.node.RouteNodeInstance;
022
023/**
024 * Factory which creates a {@link TransitionEngine} for the given {@link RouteNodeInstance}.  The 
025 * transition engine is determined based on the type of the node instance.
026 * 
027 * @see TransitionEngine
028 *
029 * @author Kuali Rice Team (rice.collab@kuali.org)
030 */
031public class TransitionEngineFactory {
032
033        public static TransitionEngine createTransitionEngine(RouteNodeInstance nodeInstance) throws Exception {
034                RouteHelper helper = new RouteHelper();
035                RouteNode routeNode = nodeInstance.getRouteNode();
036                TransitionEngine engine = null;
037                if (helper.isSimpleNode(routeNode)) {
038                        engine = new SimpleTransitionEngine();
039                } else if (helper.isSplitNode(routeNode)) {
040                        engine = new SplitTransitionEngine();
041                } else if (helper.isJoinNode(routeNode)) {
042                        engine = new JoinTransitionEngine();
043                } else if (helper.isDynamicNode(routeNode)) {
044                        engine = new DynamicTransitionEngine();
045                } else if (helper.isSubProcessNode(routeNode)) {
046                        engine = new SubProcessTransitionEngine();
047                } else {
048                        throw new WorkflowException("Could not locate transition engine for node " + routeNode.getNodeType());
049                }
050                engine.setRouteHelper(helper);
051                return engine;
052        }
053        
054}