/*

  * Copyright 2011 The Kuali Foundation

  *

  * Licensed under the Educational Community License, Version 1.0 (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.krms.framework.engine.expression;

 import java.util.Collections;

 import java.util.List;

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

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

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

 /**

  * TODO... 

  * 

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

  *

  */

 public class ExpressionBasedProposition implements Proposition {

         private final Expression<Boolean> expression;

         public ExpressionBasedProposition(Expression<Boolean> expression) {

                 this.expression = expression;

         }

         @Override

         public PropositionResult evaluate(ExecutionEnvironment environment) {

                 return new PropositionResult(expression.invoke(environment).booleanValue());

         }

     @Override

     public List<Proposition> getChildren() {

         return Collections.emptyList();

     }

     @Override

     public boolean isCompound() {

         return false;

     }

 }