source: src/main/java/geniusweb/partiesserver/repository/AvailablePartiesRepo.java

package geniusweb.partiesserver.repository;

import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import tudelft.utilities.listener.DefaultListenable;
import tudelft.utilities.repository.Repository;

/**
 * Stores all currently available parties that can be run.
 */
public class AvailablePartiesRepo extends DefaultListenable<String>
                implements Repository<String, AvailableParty> {
        private static final AvailablePartiesRepo instance = new AvailablePartiesRepo();

        private Map<String, AvailableParty> availableParties = new HashMap<>();

        private AvailablePartiesRepo() {
        }

        public static AvailablePartiesRepo instance() {
                return instance;
        }

        @Override
        public Collection<AvailableParty> list() {
                return Collections.unmodifiableCollection(availableParties.values());
        }

        @Override
        public AvailableParty get(String id) {
                return availableParties.get(id);
        }

        @Override
        public void put(AvailableParty entity) {
                availableParties.put(entity.getID(), entity);
                notifyListeners(entity.getID());
        }

        @Override
        public void remove(String id) {
                AvailableParty available = availableParties.get(id);
                if (available != null) {
                        availableParties.remove(id);
                        available.free();
                        notifyListeners(id);
                }
        }

        @Override
        public void replace(AvailableParty entity) {
                put(entity);
        }

}