001/**
002 * Copyright 2005-2017 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.engine.RouteContext;
019import org.kuali.rice.kew.engine.node.JoinNode;
020import org.kuali.rice.kew.engine.node.ProcessResult;
021import org.kuali.rice.kew.engine.node.RouteNodeInstance;
022
023/**
024 * Handles transitions to and from {@link JoinNode} nodes in the route path.
025 * 
026 * @see JoinNode
027 * 
028 * @author Kuali Rice Team (rice.collab@kuali.org)
029 */
030public class JoinTransitionEngine extends TransitionEngine {
031
032    public RouteNodeInstance transitionTo(RouteNodeInstance nextNodeInstance, RouteContext context) {
033        if (context.getNodeInstance().getBranch().getJoinNode() != null) {
034            nextNodeInstance = context.getNodeInstance().getBranch().getJoinNode();
035        } else{
036            nextNodeInstance = getRouteHelper().getJoinEngine().createExpectedJoinState(context, nextNodeInstance, context.getNodeInstance());
037        }
038        getRouteHelper().getJoinEngine().addActualJoiner(nextNodeInstance, context.getNodeInstance().getBranch());
039        return nextNodeInstance;
040    }
041    
042    public ProcessResult isComplete(RouteContext context) throws Exception {
043        RouteNodeInstance nodeInstance = context.getNodeInstance();
044                JoinNode node = (JoinNode)getNode(nodeInstance.getRouteNode(), JoinNode.class);
045                return node.process(context, getRouteHelper());
046    }
047
048}