/*

  * Copyright 2005-2008 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.RouteContext;

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

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

 import java.util.ArrayList;

 import java.util.List;

 /**

  * Handles transitions into and out of {@link SplitNode} nodes.

  * 

  * @see SplitNode

  *

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

  */

 public class SplitTransitionEngine extends TransitionEngine {

     public ProcessResult isComplete(RouteContext context) throws Exception {

         SplitNode node = (SplitNode)getNode(context.getNodeInstance().getRouteNode(), SplitNode.class);

         return node.process(context, getRouteHelper());

     }

         public Transition transitionFrom(RouteContext context, ProcessResult processResult)

                         throws Exception {

                 RouteNodeInstance splitInstance = context.getNodeInstance();

                 List<RouteNodeInstance> nextNodeInstances = new ArrayList<RouteNodeInstance>();

         SplitResult result = (SplitResult)processResult;

         for (String branchName : result.getBranchNames())

         {

             for (RouteNode routeNode : splitInstance.getRouteNode().getNextNodes())

             {

                 if (routeNode.getBranch() != null && routeNode.getBranch().getName().equals(branchName))

                 {

                     nextNodeInstances.add(createSplitChild(branchName, routeNode, splitInstance));

                 }

             }

         }

                 return new Transition(nextNodeInstances);

         }

         public static RouteNodeInstance createSplitChild(String branchName, RouteNode routeNode, RouteNodeInstance splitInstance) {

             RouteHelper routeHelper = new RouteHelper();

             RouteNodeInstance nextNodeInstance = routeHelper.getNodeFactory().createRouteNodeInstance(splitInstance.getDocumentId(), routeNode);

                 Branch branch = routeHelper.getNodeFactory().createBranch(branchName, splitInstance.getBranch(), nextNodeInstance);

                 branch.setSplitNode(splitInstance);

                 nextNodeInstance.setBranch(branch);

                 nextNodeInstance.setProcess(splitInstance.getProcess());

                 return nextNodeInstance;

         }

 }