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.collections;
023    
024    import java.io.Externalizable;
025    import java.io.IOException;
026    import java.io.ObjectInput;
027    import java.io.ObjectOutput;
028    import java.util.HashMap;
029    import java.util.Map;
030    
031    /**
032     * @author Franck WOLFF
033     */
034    public class BasicMap<K, V> extends HashMap<K, V> implements Externalizable {
035    
036        private static final long serialVersionUID = 1L;
037            
038        public BasicMap() {
039            super();
040        }
041    
042        public BasicMap(Map<K, V> map) {
043            super(map);
044        }
045    
046        @SuppressWarnings("unchecked")
047        public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
048            Object[] pairs = (Object[])in.readObject();
049            if (pairs != null) {
050                for (Object pair : pairs)
051                    put((K)((Object[])pair)[0], (V)((Object[])pair)[1]);
052            }
053        }
054    
055        public void writeExternal(ObjectOutput out) throws IOException {
056            Object[] outObjectArray = new Object[size()];
057    
058            int index = 0;
059            for (Map.Entry<K, V> entry : entrySet())
060                outObjectArray[index++] = new Object[]{entry.getKey(), entry.getValue()};
061    
062            out.writeObject(outObjectArray);
063        }
064    
065        @SuppressWarnings({ "unchecked", "rawtypes" })
066        public static BasicMap<?, ?> newInstance(Map<?, ?> map) {
067            return new BasicMap(map);
068        }
069    
070        @Override
071        public String toString() {
072            return getClass().getName() + " " + super.toString();
073        }
074    }