001    /*
002      GRANITE DATA SERVICES
003      Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004    
005      This file is part of Granite Data Services.
006    
007      Granite Data Services is free software; you can redistribute it and/or modify
008      it under the terms of the GNU Library General Public License as published by
009      the Free Software Foundation; either version 2 of the License, or (at your
010      option) any later version.
011    
012      Granite Data Services is distributed in the hope that it will be useful, but
013      WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014      FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015      for more details.
016    
017      You should have received a copy of the GNU Library General Public License
018      along with this library; if not, see <http://www.gnu.org/licenses/>.
019    */
020    
021    package org.granite.collections;
022    
023    import java.io.Externalizable;
024    import java.io.IOException;
025    import java.io.ObjectInput;
026    import java.io.ObjectOutput;
027    import java.io.Serializable;
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, Serializable {
035    
036        public BasicMap() {
037            super();
038        }
039    
040        public BasicMap(Map<K, V> map) {
041            super(map);
042        }
043    
044        @SuppressWarnings("unchecked")
045        public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
046            Object[] pairs = (Object[])in.readObject();
047            if (pairs != null) {
048                for (Object pair : pairs)
049                    put((K)((Object[])pair)[0], (V)((Object[])pair)[1]);
050            }
051        }
052    
053        public void writeExternal(ObjectOutput out) throws IOException {
054            Object[] outObjectArray = new Object[size()];
055    
056            int index = 0;
057            for (Map.Entry<K, V> entry : entrySet())
058                outObjectArray[index++] = new Object[]{entry.getKey(), entry.getValue()};
059    
060            out.writeObject(outObjectArray);
061        }
062    
063        @SuppressWarnings({ "unchecked", "rawtypes" })
064        public static BasicMap<?, ?> newInstance(Map<?, ?> map) {
065            return new BasicMap(map);
066        }
067    
068        @Override
069        public String toString() {
070            return getClass().getName() + " " + super.toString();
071        }
072    }