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.transport.util;
  
  import java.io.DataInput;
  import java.io.DataInputStream;
  import java.io.DataOutput;
  import java.io.DataOutputStream;
  import java.io.IOException;
  import java.io.Reader;
  
  import org.apache.activemq.util.ByteArrayInputStream;
  import org.apache.activemq.util.ByteArrayOutputStream;
  import org.apache.activemq.util.ByteSequence;
  import org.apache.activemq.wireformat.WireFormat;
  
  /**
   * Adds the extra methods available to text based wire format implementations
   *
   *
   */
  public abstract class TextWireFormat implements WireFormat {
  
      public abstract Object unmarshalText(String text) throws IOException;
  
      public abstract Object unmarshalText(Reader reader) throws IOException;
  
      public abstract String marshalText(Object command) throws IOException;
  
      public void marshal(Object command, DataOutput out) throws IOException {
          String text = marshalText(command);
          byte[] utf8 = text.getBytes("UTF-8");
          out.writeInt(utf8.length);
          out.write(utf8);
      }
  
      public Object unmarshal(DataInput in) throws IOException {
          int length = in.readInt();
          byte[] utf8 = new byte[length];
          in.readFully(utf8);
          String text = new String(utf8, "UTF-8");
          return unmarshalText(text);
      }
  
      public ByteSequence marshal(Object command) throws IOException {
          ByteArrayOutputStream baos = new ByteArrayOutputStream();
          DataOutputStream dos = new DataOutputStream(baos);
          marshal(command, dos);
          dos.close();
          return baos.toByteSequence();
      }
  
      public Object unmarshal(ByteSequence packet) throws IOException {
          ByteArrayInputStream stream = new ByteArrayInputStream(packet);
          DataInputStream dis = new DataInputStream(stream);
          return unmarshal(dis);
      }
  
      public boolean inReceive() {
          // TODO Implement for inactivity monitor
          return false;
      }
  
  }
  