001    /*
002     *  Licensed to the Apache Software Foundation (ASF) under one
003     *  or more contributor license agreements.  See the NOTICE file
004     *  distributed with this work for additional information
005     *  regarding copyright ownership.  The ASF licenses this file
006     *  to you under the Apache License, Version 2.0 (the
007     *  "License"); you may not use this file except in compliance
008     *  with the License.  You may obtain a copy of the License at
009     *  
010     *    http://www.apache.org/licenses/LICENSE-2.0
011     *  
012     *  Unless required by applicable law or agreed to in writing,
013     *  software distributed under the License is distributed on an
014     *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     *  KIND, either express or implied.  See the License for the
016     *  specific language governing permissions and limitations
017     *  under the License. 
018     *  
019     */
020    package org.apache.directory.server.core.partition.impl.btree.jdbm;
021    
022    
023    import java.io.IOException;
024    import java.math.BigInteger;
025    
026    import jdbm.helper.Serializer;
027    
028    
029    /**
030     * A custom BigInteger serializer to [de]serialize BigIntegers.
031     * 
032     * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
033     * @version $Rev$, $Date$
034     */
035    public class BigIntegerSerializer implements Serializer
036    {
037        private static final long serialVersionUID = 6768192848157685880L;
038    
039    
040        /* (non-Javadoc)
041         * @see jdbm.helper.Serializer#deserialize(byte[])
042         */
043        public Object deserialize( byte[] bigIntBytes ) throws IOException
044        {
045            return new BigInteger( bigIntBytes );
046        }
047    
048    
049        /* (non-Javadoc)
050         * @see jdbm.helper.Serializer#serialize(java.lang.Object)
051         */
052        public byte[] serialize( Object bigInt ) throws IOException
053        {
054            return ( ( BigInteger ) bigInt ).toByteArray();
055        }
056    }