001/* NamingContextExtHelper.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.CosNaming;
040
041import gnu.CORBA.Minor;
042import gnu.CORBA.OrbRestricted;
043
044import org.omg.CORBA.Any;
045import org.omg.CORBA.BAD_OPERATION;
046import org.omg.CORBA.BAD_PARAM;
047import org.omg.CORBA.TypeCode;
048import org.omg.CORBA.portable.Delegate;
049import org.omg.CORBA.portable.InputStream;
050import org.omg.CORBA.portable.ObjectImpl;
051import org.omg.CORBA.portable.OutputStream;
052
053/**
054 * The helper operations for the extended naming context.
055 *
056 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
057 */
058public abstract class NamingContextExtHelper
059{
060  /**
061   * The naming context repository id.
062   */
063  private static String _id = "IDL:omg.org/CosNaming/NamingContextExt:1.0";
064
065  /**
066   * Extract the naming context from the given {@link Any}.
067   */
068  public static NamingContextExt extract(Any a)
069  {
070    try
071      {
072        return ((NamingContextExtHolder) a.extract_Streamable()).value;
073      }
074    catch (ClassCastException ex)
075      {
076        BAD_OPERATION bad = new BAD_OPERATION("NamingContextExt expected");
077        bad.initCause(ex);
078        bad.minor = Minor.Any;
079        throw bad;
080      }
081  }
082
083  /**
084   * Get the {@link NamingContextExt} repository id.
085   */
086  public static String id()
087  {
088    return _id;
089  }
090
091  /**
092   * Insert the naming context into the given {@link Any}
093   */
094  public static void insert(Any a, NamingContextExt that)
095  {
096    a.insert_Streamable(new NamingContextExtHolder(that));
097  }
098
099  /**
100   * Cast the passed object into the NamingContextExt. If the
101   * object has a different java type, create an instance
102   * of the NamingContextExt, using the same delegate, as for
103   * the passed parameter. Hence this method may return
104   * a different object, than has been passed.
105   *
106   * @param obj the object to cast.
107   * @return casted instance.
108   */
109  public static NamingContextExt narrow(org.omg.CORBA.Object obj)
110  {
111    if (obj == null)
112      return null;
113    else if (obj instanceof NamingContextExt)
114      return (NamingContextExt) obj;
115    else if (!obj._is_a(id()))
116      throw new BAD_PARAM();
117    else
118      {
119        Delegate delegate = ((ObjectImpl) obj)._get_delegate();
120        return new _NamingContextExtStub(delegate);
121      }
122  }
123
124  /**
125   * Narrow the given object to the NamingContextExt. No type-checking is
126   * performed to verify that the object actually supports the requested type.
127   * The {@link BAD_OPERATION} will be thrown if unsupported operations are
128   * invoked on the new returned reference, but no failure is expected at the
129   * time of the unchecked_narrow. See OMG issue 4158.
130   *
131   * @param obj the object to cast.
132   *
133   * @return the casted NamingContextExt
134   *
135   * @since 1.5
136   */
137  public static NamingContextExt unchecked_narrow(org.omg.CORBA.Object obj)
138  {
139    if (obj == null)
140      return null;
141    else if (obj instanceof NamingContextExt)
142      return (NamingContextExt) obj;
143    else
144      {
145        // Do not call the _is_a(..).
146        Delegate delegate = ((ObjectImpl) obj)._get_delegate();
147        return new _NamingContextExtStub(delegate);
148      }
149  }
150
151  /**
152   * Read the extended naming context from the given CDR input stream.
153   */
154  public static NamingContextExt read(InputStream istream)
155  {
156    return narrow(istream.read_Object(_NamingContextExtStub.class));
157  }
158
159  /**
160   * Get the type code of the {@link NamingContextExt}.
161   */
162  public static TypeCode type()
163  {
164    return OrbRestricted.Singleton.create_interface_tc(NamingContextExtHelper.id(),
165                                          "NamingContextExt");
166  }
167
168  /**
169   * Write the given extended naming context into the given CDR output stream.
170   */
171  public static void write(OutputStream ostream, NamingContextExt value)
172  {
173    ostream.write_Object(value);
174  }
175}