| /* |
| * 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.mitosis.operation; |
| |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.io.ObjectStreamConstants; |
| |
| |
| /** |
| * Encodes {@link Operation}s to <tt>byte[]</tt> and vice versa so an |
| * {@link Operation} can be transferred via TCP/IP communication. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class OperationCodec |
| { |
| public OperationCodec() |
| { |
| } |
| |
| |
| /** |
| * Transforms the specified {@link Operation} into a byte array. |
| */ |
| public byte[] encode( Operation op ) |
| { |
| ByteArrayOutputStream bout = new ByteArrayOutputStream(); |
| try |
| { |
| ObjectOutputStream out = new ObjectOutputStream( bout ); |
| out.useProtocolVersion( ObjectStreamConstants.PROTOCOL_VERSION_2 ); |
| out.writeObject( op ); |
| out.flush(); |
| out.close(); |
| } |
| catch ( IOException e ) |
| { |
| throw ( InternalError ) new InternalError().initCause( e ); |
| } |
| return bout.toByteArray(); |
| } |
| |
| |
| /** |
| * Transforms the specified byte array into an {@link Operation}. |
| */ |
| public Operation decode( byte[] data ) |
| { |
| ObjectInputStream in; |
| |
| try |
| { |
| in = new ObjectInputStream( new ByteArrayInputStream( data ) ); |
| return ( Operation ) in.readObject(); |
| } |
| catch ( IOException e ) |
| { |
| throw ( InternalError ) new InternalError().initCause( e ); |
| } |
| catch ( ClassNotFoundException e ) |
| { |
| throw ( InternalError ) new InternalError().initCause( e ); |
| } |
| } |
| } |