001    /**
002     * Copyright 2005-2011 The Kuali Foundation
003     *
004     * Licensed under the Educational Community License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.opensource.org/licenses/ecl2.php
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    package org.kuali.rice.krms.framework.engine;
017    
018    import java.util.ArrayList;
019    import java.util.Collections;
020    import java.util.List;
021    
022    import org.kuali.rice.krms.api.engine.ExecutionEnvironment;
023    import org.kuali.rice.krms.api.engine.TermResolver;
024    
025    public final class BasicContext implements Context {
026            
027            private final List<Agenda> agendas;
028            private final List<TermResolver<?>> termResolvers;
029            
030            public BasicContext(List<Agenda> agendas, List<TermResolver<?>> termResolvers) {
031                    this.agendas = agendas;
032                    this.termResolvers = termResolvers;
033            }
034            
035            @Override
036            public void execute(ExecutionEnvironment environment) {
037                    if (termResolvers != null) for (TermResolver<?> termResolver : termResolvers) {
038                            environment.addTermResolver(termResolver);
039                    }
040                    List<Agenda> matchingAgendas = findMatchingAgendas(environment);
041                    for (Agenda matchingAgenda : matchingAgendas) {
042                            matchingAgenda.execute(environment);
043                    }
044            }
045            
046            private List<Agenda> findMatchingAgendas(ExecutionEnvironment environment) {
047                    List<Agenda> matchingAgendas = new ArrayList<Agenda>();
048                    for (Agenda agenda : agendas) {
049                            if (agenda.appliesTo(environment)) {
050                                    matchingAgendas.add(agenda);
051                            }
052                    }
053                    return matchingAgendas;
054            }
055            
056            public List<TermResolver<?>> getTermResolvers() {
057                    return Collections.unmodifiableList(termResolvers);
058            }
059    
060    }