BasicMap.java

/**
 *   GRANITE DATA SERVICES
 *   Copyright (C) 2006-2015 GRANITE DATA SERVICES S.A.S.
 *
 *   This file is part of the Granite Data Services Platform.
 *
 *   Granite Data Services is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Lesser General Public
 *   License as published by the Free Software Foundation; either
 *   version 2.1 of the License, or (at your option) any later version.
 *
 *   Granite Data Services 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 Lesser
 *   General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 *   USA, or see <http://www.gnu.org/licenses/>.
 */
package org.granite.collections;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.HashMap;
import java.util.Map;

/**
 * @author Franck WOLFF
 */
public class BasicMap<K, V> extends HashMap<K, V> implements Externalizable {

    private static final long serialVersionUID = 1L;
	
    public BasicMap() {
        super();
    }

    public BasicMap(Map<K, V> map) {
        super(map);
    }

    @SuppressWarnings("unchecked")
    public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
        Object[] pairs = (Object[])in.readObject();
        if (pairs != null) {
            for (Object pair : pairs)
                put((K)((Object[])pair)[0], (V)((Object[])pair)[1]);
        }
    }

    public void writeExternal(ObjectOutput out) throws IOException {
        Object[] outObjectArray = new Object[size()];

        int index = 0;
        for (Map.Entry<K, V> entry : entrySet())
            outObjectArray[index++] = new Object[]{entry.getKey(), entry.getValue()};

        out.writeObject(outObjectArray);
    }

    @SuppressWarnings({ "unchecked", "rawtypes" })
    public static BasicMap<?, ?> newInstance(Map<?, ?> map) {
        return new BasicMap(map);
    }

    @Override
    public String toString() {
        return getClass().getName() + " " + super.toString();
    }
}