001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *   Granite Data Services is free software; you can redistribute it and/or
008 *   modify it under the terms of the GNU Lesser General Public
009 *   License as published by the Free Software Foundation; either
010 *   version 2.1 of the License, or (at your option) any later version.
011 *
012 *   Granite Data Services is distributed in the hope that it will be useful,
013 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 *   General Public License for more details.
016 *
017 *   You should have received a copy of the GNU Lesser General Public
018 *   License along with this library; if not, write to the Free Software
019 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 *   USA, or see <http://www.gnu.org/licenses/>.
021 */
022package org.granite.messaging.amf.io.util.instantiator;
023
024import java.io.IOException;
025import java.util.ArrayList;
026import java.util.HashMap;
027import java.util.List;
028
029import org.granite.messaging.amf.io.util.Property;
030
031/**
032 * @author Franck WOLFF
033 */
034public abstract class AbstractInstantiator<T> extends HashMap<String, Object> {
035
036        private static final long serialVersionUID = 1L;
037
038        private final List<Referer> referers = new ArrayList<Referer>();
039
040    protected AbstractInstantiator() {
041    }
042
043    public abstract T newInstance() throws IOException, ClassNotFoundException, InstantiationException, IllegalAccessException;
044    public abstract List<String> getOrderedFieldNames();
045
046    public void addReferer(Object referer, Property property) {
047        referers.add(new Referer(referer, property));
048    }
049
050    public T resolve() throws IOException, ClassNotFoundException, InstantiationException, IllegalAccessException {
051        T object = newInstance();
052        if (object == null)
053                throw new InstantiationException("Instantiator newInstance() method cannot return null");
054        for (Referer referer : referers)
055            referer.property.setProperty(referer.object, object);
056        return object;
057    }
058
059    static class Referer {
060        final Object object;
061        final Property property;
062
063        Referer(Object object, Property property) {
064            this.object = object;
065            this.property = property;
066        }
067    }
068}