| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.directory.server.core.partition.impl.btree.mavibot; |
| |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutput; |
| import java.io.ObjectOutputStream; |
| import java.nio.ByteBuffer; |
| import java.util.Comparator; |
| |
| import org.apache.directory.api.ldap.model.name.Dn; |
| import org.apache.directory.mavibot.btree.serializer.AbstractElementSerializer; |
| import org.apache.directory.mavibot.btree.serializer.BufferHandler; |
| import org.apache.directory.server.i18n.I18n; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * Serialize and deserialize a Dn. |
| * </br></br> |
| * <b>This class must *not* be used outside of the server.</b> |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class DnSerializer extends AbstractElementSerializer<Dn> |
| { |
| /** The serialVersionUID */ |
| private static final long serialVersionUID = 1L; |
| |
| /** the logger for this class */ |
| private static final Logger LOG = LoggerFactory.getLogger( DnSerializer.class ); |
| |
| /** |
| * Speedup for logs |
| */ |
| private static final boolean IS_DEBUG = LOG.isDebugEnabled(); |
| |
| private static Comparator<Dn> comp = new Comparator<Dn>() |
| { |
| @Override |
| public int compare( Dn dn1, Dn dn2 ) |
| { |
| if ( dn1 == null ) |
| { |
| if ( dn2 == null ) |
| { |
| return 0; |
| } |
| |
| return -1; |
| } |
| |
| if ( dn2 == null ) |
| { |
| return 1; |
| } |
| |
| return dn1.getNormName().compareTo( dn2.getNormName() ); |
| } |
| }; |
| |
| |
| /** |
| * Creates a new instance of DnSerializer. |
| * |
| * @param schemaManager The reference to the global schemaManager |
| */ |
| public DnSerializer() |
| { |
| super( comp ); |
| } |
| |
| |
| /** |
| * <p> |
| * |
| * This is the place where we serialize Dn |
| * <p> |
| */ |
| public byte[] serialize( Dn dn ) |
| { |
| try |
| { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| ObjectOutput out = new ObjectOutputStream( baos ); |
| |
| // First, the Dn |
| dn.writeExternal( out ); |
| |
| out.flush(); |
| |
| if ( IS_DEBUG ) |
| { |
| LOG.debug( ">------------------------------------------------" ); |
| LOG.debug( "Serialized " + dn ); |
| } |
| |
| return baos.toByteArray(); |
| } |
| catch ( IOException e ) |
| { |
| throw new RuntimeException( e ); |
| } |
| } |
| |
| |
| /** |
| * Deserialize a Dn. |
| * |
| * @param bytes the byte array containing the serialized Dn |
| * @return An instance of a Dn object |
| * @throws IOException if we can't deserialize the Dn |
| */ |
| public Dn deserialize( ByteBuffer buffer ) throws IOException |
| { |
| return deserialize( new BufferHandler( buffer.array() ) ); |
| } |
| |
| |
| @Override |
| public Dn deserialize( BufferHandler bufferHandler ) throws IOException |
| { |
| ObjectInputStream in = new ObjectInputStream( new ByteArrayInputStream( bufferHandler.getBuffer() ) ); |
| |
| try |
| { |
| Dn dn = new Dn(); |
| |
| dn.readExternal( in ); |
| |
| return dn; |
| } |
| catch ( ClassNotFoundException cnfe ) |
| { |
| LOG.error( I18n.err( I18n.ERR_134, cnfe.getLocalizedMessage() ) ); |
| throw new IOException( cnfe.getLocalizedMessage() ); |
| } |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Dn fromBytes( byte[] buffer ) throws IOException |
| { |
| return fromBytes( buffer, 0 ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Dn fromBytes( byte[] buffer, int pos ) throws IOException |
| { |
| int length = buffer.length - pos; |
| ObjectInputStream in = new ObjectInputStream( new ByteArrayInputStream( buffer, pos, length ) ); |
| |
| try |
| { |
| Dn dn = new Dn(); |
| |
| dn.readExternal( in ); |
| |
| return dn; |
| } |
| catch ( ClassNotFoundException cnfe ) |
| { |
| LOG.error( I18n.err( I18n.ERR_134, cnfe.getLocalizedMessage() ) ); |
| throw new IOException( cnfe.getLocalizedMessage() ); |
| } |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Class<?> getType() |
| { |
| return Dn.class; |
| } |
| } |