/**

  * 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.framework.engine;

 import java.util.List;

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

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

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

 public class BasicRule implements Rule {

         private static final ResultLogger LOG = ResultLogger.getInstance();

         private String name;

         private Proposition proposition;

         private List<Action> actions;

         public BasicRule(String name, Proposition proposition, List<Action> actions) {

                 if (proposition == null) {

                         throw new IllegalArgumentException("Proposition cannot be null.");

                 }

                 this.name = name;

                 this.proposition = proposition;

                 this.actions = actions;

         }

         public BasicRule(Proposition proposition, List<Action> actions) {

                 this(null, proposition, actions);

         }

         @Override

         public boolean evaluate(ExecutionEnvironment environment) {

                 boolean result = proposition.evaluate(environment).getResult();

                 if (actions != null) {

                         for (Action action : actions) {

                                 if (shouldExecuteAction(result)) {

                                         action.execute(environment);

                                 }

                         }

                 }

                 if (LOG.isEnabled(environment)){

                         LOG.logResult(new BasicResult(ResultEvent.RuleEvaluated, this, environment, result));

                 }

                 return result;

         }

         protected boolean shouldExecuteAction(boolean ruleExecutionResult) {

                 return ruleExecutionResult;

         }

         public String getName() {

                 return name;

         }

         public String toString(){

                 return name;

         }

 }