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/* RequestHeader.java -- The GIOP 1.0 request message.

   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.GIOP.v1_0;

import gnu.CORBA.CDR.AbstractCdrInput;

import gnu.CORBA.CDR.AbstractCdrOutput;

import gnu.CORBA.GIOP.ServiceContext;

import gnu.CORBA.GIOP.CodeSetServiceContext;

import gnu.java.lang.CPStringBuilder;

import org.omg.CORBA.portable.IDLEntity;

/**

 * The GIOP 1.0 request message.

 *

 * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)

 */

public class RequestHeader

  extends gnu.CORBA.GIOP.RequestHeader

  implements IDLEntity

{

  /**

   * Creates an empty request header, setting requesting principal

   * to byte[] { 'P' }.

   */

  public RequestHeader()

  {

    requesting_principal = new byte[] { 'P' };

  }

  /**

   * Set if the sender expects any response to this message.

   */

  public void setResponseExpected(boolean expected)

  {

    response_expected = expected;

  }

  /**

   * Return true if response is expected.

   */

  public boolean isResponseExpected()

  {

    return response_expected;

  }

  public String bytes(byte[] array)

  {

    CPStringBuilder b = new CPStringBuilder();

    for (int i = 0; i < array.length; i++)

      {

        b.append(Integer.toHexString(array [ i ] & 0xFF));

        b.append(" ");

      }

    return b.toString();

  }

  /**

   * Get the string representation of all included contexts.

   */

  public String contexts()

  {

    CPStringBuilder b = new CPStringBuilder();

    for (int i = 0; i < service_context.length; i++)

      {

        b.append(service_context [ i ].toString());

        b.append(' ');

      }

    return b.toString();

  }

  /**

   * Reads the header from the stream.

   *

   * Sets the code set of this stream to

   * the code set, specfied in the header.

   *

   * @param in a stream to read from.

   */

  public void read(AbstractCdrInput in)

  {

    service_context = ServiceContext.readSequence(in);

    request_id = in.read_ulong();

    response_expected = in.read_boolean();

    object_key = in.read_sequence();

    operation = in.read_string();

    requesting_principal = in.read_sequence();

    in.setCodeSet(CodeSetServiceContext.find(service_context));

  }

  /**

   * Return a string representation.

   */

  public String toString()

  {

    return "Request " + request_id + ", call '" + operation + "' on " +

           bytes(object_key) + ", " +

           (response_expected ? "wait response" : "one way") + ", from " +

           bytes(requesting_principal) + contexts();

  }

  /**

   * Writes the header to the stream.

   *

   * Sets the code set of this stream to

   * the code set, specfied in the header.

   *

   * @param out a stream to write into.

   */

  public void write(AbstractCdrOutput out)

  {

    ServiceContext.writeSequence(out, service_context);

    out.write_ulong(request_id);

    out.write_boolean(response_expected);

    out.write_sequence(object_key);

    out.write_string(operation);

    out.write_sequence(requesting_principal);

    out.setCodeSet(CodeSetServiceContext.find(service_context));

  }

}