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);

         }

 }