/**

  * Copyright 2005-2011 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/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.krms.impl.validation;

 import org.kuali.rice.krms.api.engine.ExecutionEnvironment;

 import org.kuali.rice.krms.framework.engine.Action;

 import org.kuali.rice.krms.framework.type.ValidationActionType;

 import org.kuali.rice.krms.framework.type.ValidationActionTypeService;

 /**

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

  */

 public class ValidationAction implements Action {

     private final ValidationActionType type;

     private final String message;

     public ValidationAction(ValidationActionType type, String message) {

         if (type == null) throw new IllegalArgumentException("type must not be null");

         this.type = type;

         this.message = message;

     }

     @Override

     public void execute(ExecutionEnvironment environment) {

         // create or extend an existing attribute on the EngineResults to communicate the selected Validation and

         // action

         Object value = environment.getEngineResults().getAttribute(ValidationActionTypeService.VALIDATIONS_ACTION_ATTRIBUTE);

         StringBuilder selectedAttributesStringBuilder = new StringBuilder();

         if (value != null) {

             // assume the value is what we think it is

             selectedAttributesStringBuilder.append(value.toString());

             // we need a comma after the initial value

             selectedAttributesStringBuilder.append(",");

         }

         // add our people flow action to the string using our convention

         selectedAttributesStringBuilder.append(type.getCode());

         selectedAttributesStringBuilder.append(":");

         selectedAttributesStringBuilder.append(message);

         // set our attribute on the engine results

         environment.getEngineResults().setAttribute(ValidationActionTypeService.VALIDATIONS_ACTION_ATTRIBUTE,

                 selectedAttributesStringBuilder.toString()

         );

     }

     @Override

     public void executeSimulation(ExecutionEnvironment environment) {

         // our action doesn't need special handling during simulations

         execute(environment);

     }

 }