/*

  * 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;

 import java.io.Serializable;

 import java.util.ArrayList;

 import java.util.List;

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

 /**

  * Represents the current state of the workflow engine.

  * 

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

  */

 public class EngineState implements Serializable {

         private static final long serialVersionUID = 2405363802483005090L;

         private static int currentSimulationId = -10;

     private RouteNodeInstance transitioningFrom;

     private RouteNodeInstance transitioningTo;

     private List completeNodeInstances = new ArrayList();

     private List generatedRequests = new ArrayList();

     public List getCompleteNodeInstances() {

         return completeNodeInstances;

     }

     public void setCompleteNodeInstances(List completeNodeInstances) {

         this.completeNodeInstances = completeNodeInstances;

     }

     public RouteNodeInstance getTransitioningFrom() {

         return transitioningFrom;

     }

     public void setTransitioningFrom(RouteNodeInstance transitioningFrom) {

         this.transitioningFrom = transitioningFrom;

     }

     public RouteNodeInstance getTransitioningTo() {

         return transitioningTo;

     }

     public void setTransitioningTo(RouteNodeInstance transitioningTo) {

         this.transitioningTo = transitioningTo;

     }

     public List getGeneratedRequests() {

         return generatedRequests;

     }

     public void setGeneratedRequests(List generatedRequests) {

         this.generatedRequests = generatedRequests;

     }

     /**

      * Gets the next id to be used for simulation purposes.  Since, during simulation, we cannot save to the database and get primary keys

      * assigned to our data beans, this method will be used to get a new simulation id which is guaranteed to be a negative number

      * which will be unique for at least the lifetime of the simulation.

      */

     public Long getNextSimulationId() {

         synchronized (EngineState.class) {

             return new Long(currentSimulationId--);

         }

     }

 }