UnitsFactory.java

/**
 *  C-Nery - A home automation web application for C-Bus.
 *  Copyright (C) 2008,2009,2012  Dave Oxley <dave@daveoxley.co.uk>.
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as
 *  published by the Free Software Foundation, either version 3 of the
 *  License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package com.daveoxley.cnery.factories;

import com.daveoxley.cbus.Network;
import com.daveoxley.cbus.Unit;
import com.daveoxley.seam.exceptions.EntityNotFoundException;
import java.io.Serializable;
import java.util.Collections;
import java.util.List;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Factory;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Observer;
import org.jboss.seam.contexts.Contexts;
import org.ajax4jsf.model.ExtendedDataModel;

/**
 *
 * @author Dave Oxley <dave@daveoxley.co.uk>
 */
@Name("unitsFactory")
public class UnitsFactory implements Serializable {

    @In
    private Network selectedNetwork;

    @Factory(value="unitsDataModel",autoCreate=true,scope=ScopeType.EVENT)
    public ExtendedDataModel<Unit> updateUnits() throws EntityNotFoundException {

        try {
            final List<Unit> _units = selectedNetwork.getUnits(false);
            Collections.sort(_units);

            return new CNeryDataModel<Integer, Unit>(_units) {

                @Override
                Integer getKey(Unit u) {
                    return u.getUnitID();
                }
            };
        } catch (Exception e) {
            throw new EntityNotFoundException(selectedNetwork.getAddress());
        }
    }

    @Observer(create=false,value="unitsUpdated")
    public void removeUnits() {
        Contexts.getEventContext().remove("unitsDataModel");
    }
}