content: /**
   * 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.activemq.wireformat;
  
  import java.io.DataInput;
  import java.io.DataInputStream;
  import java.io.DataOutput;
  import java.io.DataOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.ObjectOutputStream;
  import java.io.OutputStream;
  
  import org.apache.activemq.util.ByteArrayInputStream;
  import org.apache.activemq.util.ByteArrayOutputStream;
  import org.apache.activemq.util.ByteSequence;
  import org.apache.activemq.util.ClassLoadingAwareObjectInputStream;
  
  /**
   * A simple implementation which uses Object Stream serialization.
   * 
   * 
   */
  public class ObjectStreamWireFormat implements WireFormat {
  
      public ByteSequence marshal(Object command) throws IOException {
          ByteArrayOutputStream baos = new ByteArrayOutputStream();
          DataOutputStream ds = new DataOutputStream(baos);
          marshal(command, ds);
          ds.close();
          return baos.toByteSequence();
      }
  
      public Object unmarshal(ByteSequence packet) throws IOException {
          return unmarshal(new DataInputStream(new ByteArrayInputStream(packet)));
      }
  
      public void marshal(Object command, DataOutput ds) throws IOException {
          ObjectOutputStream out = new ObjectOutputStream((OutputStream)ds);
          out.writeObject(command);
          out.flush();
          out.reset();
      }
  
      public Object unmarshal(DataInput ds) throws IOException {
          try {
              ClassLoadingAwareObjectInputStream in = new ClassLoadingAwareObjectInputStream((InputStream)ds);
              Object command;
              command = in.readObject();
              in.close();
              return command;
          } catch (ClassNotFoundException e) {
              throw (IOException)new IOException("unmarshal failed: " + e).initCause(e);
          }
      }
  
      public void setVersion(int version) {
      }
  
      public int getVersion() {
          return 0;
      }
  
  }
  