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/* NameHelper.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 org.omg.CosNaming;

import gnu.CORBA.Minor;

import org.omg.CORBA.Any;

import org.omg.CORBA.BAD_OPERATION;

import org.omg.CORBA.ORB;

import org.omg.CORBA.TypeCode;

import org.omg.CORBA.portable.InputStream;

import org.omg.CORBA.portable.OutputStream;

/**

 * The helper operations for the name that is defined as an array

 * of the name components. There is no java class, directly matching

 * the 'Name' IDL type.

 *

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

 */

public abstract class NameHelper

{

  /**

   * The repository id of the Name.

   */

  private static String _id = "IDL:omg.org/CosNaming/Name:1.0";

  /**

   * The cached typecode of the Name.

   */

  private static TypeCode typeCode;

  /**

   * Extract the Name the given {@link Any}.

   */

  public static NameComponent[] extract(Any a)

  {

    try

      {

        return ((NameHolder) a.extract_Streamable()).value;

      }

    catch (ClassCastException ex)

      {

        BAD_OPERATION bad = new BAD_OPERATION("Name expected");

        bad.initCause(ex);

        bad.minor = Minor.Any;

        throw bad;

      }

  }

  /**

   * Get the Name repository Id.

   */

  public static String id()

  {

    return _id;

  }

  /**

   * Extract the Name from the given {@link Any}.

   */

  public static void insert(Any a, NameComponent[] that)

  {

    a.insert_Streamable(new NameHolder(that));

  }

  /**

   * Read the Name from the given CDR input stream.

   */

  public static NameComponent[] read(InputStream istream)

  {

    NameComponent[] value = null;

    int l = istream.read_long();

    value = new NameComponent[ l ];

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

      value [ i ] = NameComponentHelper.read(istream);

    return value;

  }

  /**

   * Get the type code of the Name.

   */

  public static TypeCode type()

  {

    if (typeCode == null)

      {

        typeCode = NameComponentHelper.type();

        typeCode = ORB.init().create_sequence_tc(0, typeCode);

        typeCode =

          ORB.init().create_alias_tc(NameHelper.id(), "Name", typeCode);

      }

    return typeCode;

  }

  /**

   * Write the Name into the CDR output stream.

   */

  public static void write(OutputStream ostream, NameComponent[] value)

  {

    ostream.write_long(value.length);

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

      NameComponentHelper.write(ostream, value [ i ]);

  }

}