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     */
022    package org.granite.messaging.amf.io.util.instantiator;
023    
024    import java.io.IOException;
025    import java.util.ArrayList;
026    import java.util.HashMap;
027    import java.util.List;
028    
029    import org.granite.messaging.amf.io.util.Property;
030    
031    /**
032     * @author Franck WOLFF
033     */
034    public 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    }