/**

  *

  * Copyright 2004 Hiram Chrino

  *

  *  Licensed 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.activeio;

 import java.io.DataOutput;

 import java.io.IOException;

 import java.io.OutputStream;

 /**

  * Provides a ByteBuffer like interface to work with IO channel packets of data.

  * 

  * @version $Revision$

  */

         private final byte[] data;

         private final int offset;

         private final int length;

         }

         }

         }

         }

     }

     public int position();

     public void position(int position);

     public int limit();

     public void limit(int limit);

     public void flip();

     public int remaining();

     public void rewind();

     public boolean hasRemaining();

     public void clear();

     public Packet slice();

     public Packet duplicate();

     public Object duplicate(ClassLoader cl) throws IOException;

     public int capacity();

     public ByteSequence asByteSequence();

     public byte[] sliceAsBytes();

     /**

      * Writes the remaing bytes in the packet to the output stream.

      * 

      * @param out

      * @return

      */

     void writeTo(OutputStream out) throws IOException;   

     void writeTo(DataOutput out) throws IOException;

     // To read data out of the packet.

     public int read();

     public int read(byte data[], int offset, int length);

     // To write data into the packet.

     public boolean write( int data );

     public int write( byte data[], int offset, int length );

     public int read(Packet dest);

     /**

      * Used to get a richer metadata interface to the packet.

      */

     Object narrow(Class target);

 }