/*

  * Copyright 2011 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/ecl1.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 org.kuali.rice.core.framework.parameter.ParameterService;

 import org.kuali.rice.kew.engine.node.service.RouteNodeService;

 import org.kuali.rice.kew.engine.simulation.SimulationEngine;

 import org.kuali.rice.kew.routeheader.service.RouteHeaderService;

 import org.springframework.beans.factory.InitializingBean;

 /**

  * An implementation of the {@link WorkflowEngineFactory}. 

  * 

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

  */

 public class WorkflowEngineFactoryImpl implements WorkflowEngineFactory, InitializingBean {

     private RouteNodeService routeNodeService;

     private RouteHeaderService routeHeaderService;

     private ParameterService parameterService;

     /**

      * Ensures that all dependencies were injected into this factory.

      * 

      * @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet()

      * @throws IllegalStateException if any of the required services are null

      */

     @Override

     public void afterPropertiesSet() {

         if (routeNodeService == null) {

             throw new IllegalStateException("routeNodeService not properly injected, was null.");

         }

         if (routeHeaderService == null) {

             throw new IllegalStateException("routeHeaderService not properly injected, was null.");

         }

         if (parameterService == null) {

             throw new IllegalStateException("parameterService not properly injected, was null.");

         }

     }

     /**

      * @see org.kuali.rice.kew.engine.WorkflowEngineFactory#newEngine(org.kuali.rice.kew.engine.OrchestrationConfig)

      */

     @SuppressWarnings("unchecked")

     @Override

     public <E extends WorkflowEngine> E newEngine(OrchestrationConfig config) {

         switch (config.getCapability()) {

             case STANDARD:

                 return (E) new StandardWorkflowEngine(routeNodeService, routeHeaderService, parameterService, config);

             case BLANKET_APPROVAL:

                 return (E) new BlanketApproveEngine(routeNodeService, routeHeaderService, parameterService, config);

             case SIMULATION:

                 return (E) new SimulationEngine(routeNodeService, routeHeaderService, parameterService, config);

         }

         return null;

     }

     /**

      * @return the routeNodeService

      */

     public RouteNodeService getRouteNodeService() {

         return this.routeNodeService;

     }

     /**

      * @param routeNodeService the routeNodeService to set

      */

     public void setRouteNodeService(RouteNodeService routeNodeService) {

         this.routeNodeService = routeNodeService;

     }

     /**

      * @return the routeHeaderService

      */

     public RouteHeaderService getRouteHeaderService() {

         return this.routeHeaderService;

     }

     /**

      * @param routeHeaderService the routeHeaderService to set

      */

     public void setRouteHeaderService(RouteHeaderService routeHeaderService) {

         this.routeHeaderService = routeHeaderService;

     }

     /**

      * @return the parameterService

      */

     public ParameterService getParameterService() {

         return this.parameterService;

     }

     /**

      * @param parameterService the parameterService to set

      */

     public void setParameterService(ParameterService parameterService) {

         this.parameterService = parameterService;

     }

 }