Source for org.omg.CORBA.ObjectHelper

   1: /* ObjectHelper.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.CORBA;
  40: 
  41: import gnu.CORBA.primitiveTypeCode;
  42: 
  43: import org.omg.CORBA.portable.InputStream;
  44: import org.omg.CORBA.portable.OutputStream;
  45: 
  46: /**
  47:  * The helper operations for the binding list.
  48:  *
  49:  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  50:  */
  51: public abstract class ObjectHelper
  52: {
  53:   static TypeCode typeCode;
  54: 
  55:   /**
  56:    * Extract the array of object from the given {@link Any}.
  57:    */
  58:   public static org.omg.CORBA.Object extract(Any a)
  59:   {
  60:     try
  61:       {
  62:         return ((ObjectHolder) a.extract_Streamable()).value;
  63:       }
  64:     catch (ClassCastException ex)
  65:       {
  66:         throw new BAD_OPERATION("CORBA object expected");
  67:       }
  68:   }
  69: 
  70:   /**
  71:    * Get the object repository id.
  72:    * @return the empty string.
  73:    */
  74:   public static String id()
  75:   {
  76:     return "";
  77:   }
  78: 
  79:   /**
  80:    * Insert the object into the given {@link Any}.
  81:    */
  82:   public static void insert(Any a, org.omg.CORBA.Object object)
  83:   {
  84:     a.insert_Streamable(new ObjectHolder(object));
  85:   }
  86: 
  87:   /**
  88:    * Read the object from the given CDR input stream.
  89:    */
  90:   public static org.omg.CORBA.Object read(InputStream istream)
  91:   {
  92:     return istream.read_Object();
  93:   }
  94: 
  95:   /**
  96:    * Return the object type code.
  97:    */
  98:   public static TypeCode type()
  99:   {
 100:     if (typeCode == null)
 101:       typeCode = ORB.init().get_primitive_tc(TCKind.tk_objref);
 102:     return typeCode;
 103:   }
 104: 
 105:   /**
 106:    * Write the object into the given CDR output stream.
 107:    */
 108:   public static void write(OutputStream ostream, org.omg.CORBA.Object value)
 109:   {
 110:     ostream.write_Object(value);
 111:   }
 112: }