/**

  * 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.ArrayList;

 import java.util.Collections;

 import java.util.List;

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

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

 public final class BasicContext implements Context {

         private final List<Agenda> agendas;

         private final List<TermResolver<?>> termResolvers;

         public BasicContext(List<Agenda> agendas, List<TermResolver<?>> termResolvers) {

                 this.agendas = agendas;

                 this.termResolvers = termResolvers;

         }

         @Override

         public void execute(ExecutionEnvironment environment) {

                 if (termResolvers != null) for (TermResolver<?> termResolver : termResolvers) {

                         environment.addTermResolver(termResolver);

                 }

                 List<Agenda> matchingAgendas = findMatchingAgendas(environment);

                 for (Agenda matchingAgenda : matchingAgendas) {

                         matchingAgenda.execute(environment);

                 }

         }

         private List<Agenda> findMatchingAgendas(ExecutionEnvironment environment) {

                 List<Agenda> matchingAgendas = new ArrayList<Agenda>();

                 for (Agenda agenda : agendas) {

                         if (agenda.appliesTo(environment)) {

                                 matchingAgendas.add(agenda);

                         }

                 }

                 return matchingAgendas;

         }

         public List<TermResolver<?>> getTermResolvers() {

                 return Collections.unmodifiableList(termResolvers);

         }

 }