bufferedcdroutput.java

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/* BufferedCdrOutput.java --
   Copyright (C) 2005 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.

As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module.  An independent module is a module which is not derived from
or based on this library.  If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so.  If you do not wish to do so, delete this
exception statement from your version. */


package gnu.CORBA.CDR;

import java.io.ByteArrayOutputStream;

/**
 * A CORBA output stream, writing data into the internal buffer ({@link ByteArrayOutputStream}).
 * 
 * @author Audrius Meskauskas ([e-mail])
 */
public class BufferedCdrOutput
  extends AbstractCdrOutput
  implements gnuValueStream
{
  /**
   * Use serialVersionUID for interoperability.
   */
  private static final long serialVersionUID = 1;

  /**
   * The byte buffer.
   */
  public final AligningOutput buffer;

  /**
   * Creates the instance with the given initial buffer size.
   * 
   * @param bufSize the buffer size.
   */
  public BufferedCdrOutput(int bufSize)
  {
    buffer = new AligningOutput(bufSize);
    setOutputStream(buffer);
  }

  /**
   * Creates the instance with the default buffer size.
   */
  public BufferedCdrOutput()
  {
    buffer = new AligningOutput();
    setOutputStream(buffer);
  }

  /**
   * Set the alignment offset, if the index of the first byte in the stream is
   * different from 0.
   */
  public void setOffset(int an_offset)
  {
    buffer.setOffset(an_offset);
  }

  /**
   * Align the curretn position at the given natural boundary.
   */
  public void align(int boundary)
  {
    buffer.align(boundary);
  }

  /**
   * Return the input stream that reads the previously written values.
   */
  public org.omg.CORBA.portable.InputStream create_input_stream()
  {
    BufferredCdrInput in = new BufferredCdrInput(buffer.toByteArray());
    in.setOrb(orb);

    in.setVersion(giop);
    in.setCodeSet(getCodeSet());

    return in;
  }

  /**
   * Resets (clears) the buffer.
   */
  public void reset()
  {
    buffer.reset();
    setOutputStream(buffer);
  }

  /**
   * Get the current position in the buffer.
   * 
   * @return The position in the buffer, taking offset into consideration.
   */
  public int getPosition()
  {
    return buffer.getPosition();
  }

  /**
   * Get the associated RunTime.
   */
  public gnuRuntime getRunTime()
  {
    return runtime;
  }

  /**
   * Replace the instance of RunTime.
   */
  public void setRunTime(gnuRuntime a_runtime)
  {
    runtime = a_runtime;
  }

  /**
   * Seek to the given position.
   */
  public void seek(int position)
  {
    buffer.seek(position);
  }

}