/**

  * 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.osedu.org/licenses/ECL-2.0

  *

  * 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.student.process.poc.krms.proposition;

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

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

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

 import org.kuali.rice.krms.framework.engine.result.BasicResult;

 import org.kuali.student.common.util.krms.RulesExecutionConstants;

 import org.kuali.student.common.util.krms.proposition.AbstractLeafProposition;

 /**

  * This proposition is used to evaluate whether or not a person (usually a student) is deceased

  *

  * @author alubbers

  */

 public class PersonLivingProposition extends AbstractLeafProposition {

     @Override

     public PropositionResult evaluate(ExecutionEnvironment environment) {

         Boolean isStudentDeceased = environment.resolveTerm(RulesExecutionConstants.studentDeceasedTerm, this);

         PropositionResult result = new PropositionResult(!isStudentDeceased);

         environment.getEngineResults().addResult(new BasicResult(ResultEvent.PropositionEvaluated, this, environment, result.getResult()));

         return result;

     }

 }