/**

  * 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.framework.engine.Action;

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

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

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

 import java.util.List;

 /**

  *

  * A {@link org.kuali.rice.krms.framework.engine.Rule} that executes a {@link org.kuali.rice.krms.framework.engine.Action} when the {@link Proposition} is false,

  * as opposed to {@link BasicRule} which executes its action when the proposition is true.

  *

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

  */

 public class ValidationRule extends BasicRule {

     private ValidationRuleType type = null;

     public ValidationRule(ValidationRuleType type, String name, Proposition proposition, List<Action> actions) {

         super(name, proposition, actions);

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

         this.type = type;

     }

     @Override

     protected boolean shouldExecuteAction(boolean ruleExecutionResult) {

         if (type == null || type.equals(ValidationRuleType.VALID)) {

             return !ruleExecutionResult;

         }

         return ruleExecutionResult;

     }

 }