Source for org.omg.CosNaming.NamingContextExtHelper

   1: /* NamingContextExtHelper.java --
   2:    Copyright (C) 2005 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package org.omg.CosNaming;
  40: 
  41: import gnu.CORBA.Minor;
  42: 
  43: import org.omg.CORBA.Any;
  44: import org.omg.CORBA.BAD_OPERATION;
  45: import org.omg.CORBA.BAD_PARAM;
  46: import org.omg.CORBA.ORB;
  47: import org.omg.CORBA.TypeCode;
  48: import org.omg.CORBA.portable.Delegate;
  49: import org.omg.CORBA.portable.InputStream;
  50: import org.omg.CORBA.portable.ObjectImpl;
  51: import org.omg.CORBA.portable.OutputStream;
  52: 
  53: /**
  54:  * The helper operations for the extended naming context.
  55:  *
  56:  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  57:  */
  58: public abstract class NamingContextExtHelper
  59: {
  60:   /**
  61:    * The naming context repository id.
  62:    */
  63:   private static String _id = "IDL:omg.org/CosNaming/NamingContextExt:1.0";
  64: 
  65:   /**
  66:    * The cached {@link NamingContextExt} typecode.
  67:    */
  68:   private static TypeCode typeCode = null;
  69: 
  70:   /**
  71:    * Extract the naming context from the given {@link Any}.
  72:    */
  73:   public static NamingContextExt extract(Any a)
  74:   {
  75:     try
  76:       {
  77:         return ((NamingContextExtHolder) a.extract_Streamable()).value;
  78:       }
  79:     catch (ClassCastException ex)
  80:       {
  81:         BAD_OPERATION bad = new BAD_OPERATION("NamingContextExt expected");
  82:         bad.initCause(ex);
  83:         bad.minor = Minor.Any;        
  84:         throw bad;
  85:       }
  86:   }
  87: 
  88:   /**
  89:    * Get the {@link NamingContextExt} repository id.
  90:    */
  91:   public static String id()
  92:   {
  93:     return _id;
  94:   }
  95: 
  96:   /**
  97:    * Insert the naming context into the given {@link Any}
  98:    */
  99:   public static void insert(Any a, NamingContextExt that)
 100:   {
 101:     a.insert_Streamable(new NamingContextExtHolder(that));
 102:   }
 103: 
 104:   /**
 105:    * Cast the passed object into the NamingContextExt. If the
 106:    * object has a different java type, create an instance
 107:    * of the NamingContextExt, using the same delegate, as for
 108:    * the passed parameter. Hence this method may return
 109:    * a different object, than has been passed.
 110:    *
 111:    * @param obj the object to cast.
 112:    * @return casted instance.
 113:    */
 114:   public static NamingContextExt narrow(org.omg.CORBA.Object obj)
 115:   {
 116:     if (obj == null)
 117:       return null;
 118:     else if (obj instanceof NamingContextExt)
 119:       return (NamingContextExt) obj;
 120:     else if (!obj._is_a(id()))
 121:       throw new BAD_PARAM();
 122:     else
 123:       {
 124:         Delegate delegate = ((ObjectImpl) obj)._get_delegate();
 125:         return new _NamingContextExtStub(delegate);
 126:       }
 127:   }
 128:   
 129:   /**
 130:    * Narrow the given object to the NamingContextExt. No type-checking is
 131:    * performed to verify that the object actually supports the requested type.
 132:    * The {@link BAD_OPERATION} will be thrown if unsupported operations are
 133:    * invoked on the new returned reference, but no failure is expected at the
 134:    * time of the unchecked_narrow.
 135:    * 
 136:    * @param obj the object to cast.
 137:    * 
 138:    * @return the casted NamingContextExt
 139:    * 
 140:    * @since 1.5 
 141:    * 
 142:    * @see OMG issue 4158.
 143:    */
 144:   public static NamingContextExt unchecked_narrow(org.omg.CORBA.Object obj)
 145:   {
 146:     if (obj == null)
 147:       return null;
 148:     else if (obj instanceof NamingContextExt)
 149:       return (NamingContextExt) obj;
 150:     else
 151:       {
 152:         // Do not call the _is_a(..).
 153:         Delegate delegate = ((ObjectImpl) obj)._get_delegate();
 154:         return new _NamingContextExtStub(delegate);
 155:       }    
 156:   }
 157: 
 158:   /**
 159:    * Read the extended naming context from the given CDR input stream.
 160:    */
 161:   public static NamingContextExt read(InputStream istream)
 162:   {
 163:     return narrow(istream.read_Object(_NamingContextExtStub.class));
 164:   }
 165: 
 166:   /**
 167:    * Get the type code of the {@link NamingContextExt}.
 168:    */
 169:   public static TypeCode type()
 170:   {
 171:     if (typeCode == null)
 172:       typeCode =
 173:         ORB.init().create_interface_tc(NamingContextExtHelper.id(),
 174:                                        "NamingContextExt"
 175:                                       );
 176:     return typeCode;
 177:   }
 178: 
 179:   /**
 180:    * Write the given extended naming context into the given CDR output stream.
 181:    */
 182:   public static void write(OutputStream ostream, NamingContextExt value)
 183:   {
 184:     ostream.write_Object(value);
 185:   }
 186: }