/*
 * Copyright 2005-2008 Les Hazlewood
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jsecurity.io;

import java.beans.XMLDecoder;
import java.beans.XMLEncoder;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;

/**
 * @author Les Hazlewood
 * @since 0.9
 */
public class XmlSerializer implements Serializer {

    public byte[] serialize(Object source) {
        if (source == null) {
            String msg = "argument cannot be null.";
            throw new IllegalArgumentException(msg);
        }

        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        XMLEncoder encoder = new XMLEncoder(new BufferedOutputStream(bos));
        encoder.writeObject(source);
        encoder.close();

        return bos.toByteArray();
    }

    public Object deserialize(byte[] serialized) {
        if ( serialized == null ) {
            throw new IllegalArgumentException( "Argument cannot be null." );
        }
        ByteArrayInputStream bis = new ByteArrayInputStream( serialized );
        XMLDecoder decoder = new XMLDecoder(new BufferedInputStream(bis));
        Object o = decoder.readObject();
        decoder.close();
        return o;
    }
}