001/* NoServantHelper.java --
002   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038
039package org.omg.PortableServer.POAPackage;
040
041import gnu.CORBA.EmptyExceptionHolder;
042import gnu.CORBA.Minor;
043import gnu.CORBA.OrbRestricted;
044
045import org.omg.CORBA.Any;
046import org.omg.CORBA.BAD_OPERATION;
047import org.omg.CORBA.ORB;
048import org.omg.CORBA.StructMember;
049import org.omg.CORBA.TypeCode;
050import org.omg.CORBA.portable.InputStream;
051import org.omg.CORBA.portable.OutputStream;
052
053/**
054 * The helper operations for the exception {@link NoServant}.
055 *
056 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
057 */
058public abstract class NoServantHelper
059{
060  /**
061   * The cached typecode value, computed only once.
062   */
063  private static TypeCode typeCode;
064
065  /**
066   * Create the NoServant typecode (empty structure,
067   * named "NoServant").
068   */
069  public static TypeCode type()
070  {
071    if (typeCode == null)
072      {
073        ORB orb = OrbRestricted.Singleton;
074        StructMember[] members = new StructMember[ 0 ];
075        typeCode = orb.create_exception_tc(id(), "NoServant", members);
076      }
077    return typeCode;
078  }
079
080  /* Every user exception with no user defined
081     fields can use EmptyExceptionHolder */
082
083  /**
084   * Insert the NoServant into the given Any.
085   *
086   * @param any the Any to insert into.
087   * @param that the NoServant to insert.
088   */
089  public static void insert(Any any, NoServant that)
090  {
091    any.insert_Streamable(new EmptyExceptionHolder(that, type()));
092  }
093
094  /**
095   * Extract the NoServant from given Any.
096   *
097   * @throws BAD_OPERATION if the passed Any does not contain NoServant.
098   */
099  public static NoServant extract(Any any)
100  {
101    try
102      {
103        EmptyExceptionHolder h =
104          (EmptyExceptionHolder) any.extract_Streamable();
105        return (NoServant) h.value;
106      }
107    catch (ClassCastException cex)
108      {
109        BAD_OPERATION bad = new BAD_OPERATION("NoServant expected");
110        bad.minor = Minor.Any;
111        bad.initCause(cex);
112        throw bad;
113      }
114  }
115
116  /**
117   * Get the NoServant repository id.
118   *
119   * @return "IDL:omg.org/PortableServer/POA/NoServant:1.0", always.
120   */
121  public static String id()
122  {
123    return "IDL:omg.org/PortableServer/POA/NoServant:1.0";
124  }
125
126  /**
127   * Read the exception from the CDR intput stream.
128   *
129   * @param input a org.omg.CORBA.portable stream to read from.
130   */
131  public static NoServant read(InputStream input)
132  {
133    // Read the exception repository id.
134    String id = input.read_string();
135    NoServant value = new NoServant(id);
136
137    return value;
138  }
139
140  /**
141   * Write the exception to the CDR output stream.
142   *
143   * @param output a org.omg.CORBA.portable stream stream to write into.
144   * @param value a value to write.
145   */
146  public static void write(OutputStream output, NoServant value)
147  {
148    // Write the exception repository id.
149    output.write_string(id());
150  }
151}