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1   /**
2    * Copyright 2005-2015 The Kuali Foundation
3    *
4    * Licensed under the Educational Community License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    * http://www.opensource.org/licenses/ecl2.php
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.kuali.rice.kew.engine.transition;
17  
18  import org.kuali.rice.kew.engine.RouteContext;
19  import org.kuali.rice.kew.engine.node.JoinNode;
20  import org.kuali.rice.kew.engine.node.ProcessResult;
21  import org.kuali.rice.kew.engine.node.RouteNodeInstance;
22  
23  /**
24   * Handles transitions to and from {@link JoinNode} nodes in the route path.
25   * 
26   * @see JoinNode
27   * 
28   * @author Kuali Rice Team (rice.collab@kuali.org)
29   */
30  public class JoinTransitionEngine extends TransitionEngine {
31  
32      public RouteNodeInstance transitionTo(RouteNodeInstance nextNodeInstance, RouteContext context) {
33          if (context.getNodeInstance().getBranch().getJoinNode() != null) {
34              nextNodeInstance = context.getNodeInstance().getBranch().getJoinNode();
35          } else{
36              nextNodeInstance = getRouteHelper().getJoinEngine().createExpectedJoinState(context, nextNodeInstance, context.getNodeInstance());
37          }
38          getRouteHelper().getJoinEngine().addActualJoiner(nextNodeInstance, context.getNodeInstance().getBranch());
39          return nextNodeInstance;
40      }
41      
42      public ProcessResult isComplete(RouteContext context) throws Exception {
43          RouteNodeInstance nodeInstance = context.getNodeInstance();
44  		JoinNode node = (JoinNode)getNode(nodeInstance.getRouteNode(), JoinNode.class);
45  		return node.process(context, getRouteHelper());
46      }
47  
48  }