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/* DynamicImplementation.java --

   Copyright (C) 2005, 2006 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 org.omg.CORBA;

import gnu.CORBA.Unexpected;

import gnu.CORBA.gnuAny;

import gnu.CORBA.gnuNVList;

import org.omg.CORBA.portable.ObjectImpl;

import org.omg.CORBA.portable.OutputStream;

/**

 * This class was probably originally thinked as a base of all CORBA

 * object implementations. However the code, generated by IDL to

 * java compilers almost never use it, preferring to derive the

 * object implementation bases directly from the {@link ObjectImpl}.

 * The class has become deprecated since the 1.4 release.

 *

 * @deprecated since 1.4.

 *

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

 */

public class DynamicImplementation

  extends ObjectImpl

{

  /**

   * Invoke the method of the CORBA object. After converting the parameters,

   * this method delegates call to the {@link ObjectImpl#_invoke}.

   *

   * @deprecated since 1.4.

   *

   * @param request the container for both passing and returing the parameters,

   * also contains the method name and thrown exceptions.

   */

  public void invoke(ServerRequest request)

  {

    Request r = _request(request.operation());

    // Copy the parameters.

    NVList args = new gnuNVList();

    request.arguments(args);

    NamedValue v;

    int i = 0;

    try

      {

        // Set the arguments.

        for (i = 0; i < args.count(); i++)

          {

            v = args.item(i);

            Any n;

            OutputStream out;

            switch (v.flags())

              {

                case ARG_IN.value:

                  out = v.value().create_output_stream();

                  v.value().write_value(out);

                  n = r.add_named_in_arg(v.name());

                  n.read_value(out.create_input_stream(), v.value().type());

                  break;

                case ARG_INOUT.value:

                  out = v.value().create_output_stream();

                  v.value().write_value(out);

                  n = r.add_named_inout_arg(v.name());

                  n.read_value(out.create_input_stream(), v.value().type());

                  break;

                case ARG_OUT.value:

                  r.add_named_out_arg(v.name());

                  break;

                default:

                  throw new InternalError("Invalid flags " + v.flags());

              }

          }

      }

    catch (Bounds b)

      {

        throw new Unexpected(args.count() + "[" + i + "]", b);

      }

    // Set context.

    r.ctx(request.ctx());

    // Set the return type (expects that the ServerRequest will initialise

    // the passed Any.

    gnuAny g = new gnuAny();

    request.result(g);

    r.set_return_type(g.type());

    // Invoke the method.

    r.invoke();

    // Transfer the returned values.

    NVList r_args = r.arguments();

    try

      {

        // API states that the ServerRequest.arguments must be called only

        // once. Hence we assume we can just modify the previously returned

        // value <code>args</code>, and the ServerRequest will preserve the

        // reference.

        for (i = 0; i < args.count(); i++)

          {

            v = args.item(i);

            if (v.flags() == ARG_OUT.value || v.flags() == ARG_INOUT.value)

              {

                OutputStream out = r_args.item(i).value().create_output_stream();

                r_args.item(i).value().write_value(out);

                v.value().read_value(out.create_input_stream(),

                  v.value().type());

              }

          }

      }

    catch (Bounds b)

      {

        throw new Unexpected(args.count() + "[" + i + "]", b);

      }

    // Set the returned result (if any).

    NamedValue returns = r.result();

    if (returns != null)

      request.set_result(returns.value());

  }

  /**

   * Returns the array of the repository ids, supported by this object.

   * In this implementation, the method must be overrridden to return

   * a sendible object-specific information. The default method returns

   * an empty array.

   *

   * @deprecated since 1.4.

   *

   * @return the empty array, always.

   */

  public String[] _ids()

  {

    return new String[ 0 ];

  }

}