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.Minor;
  42: import gnu.CORBA.typecodes.PrimitiveTypeCode;
  43: 
  44: import org.omg.CORBA.portable.InputStream;
  45: import org.omg.CORBA.portable.OutputStream;
  46: 
  47: /**
  48:  * The helper operations for the binding list.
  49:  *
  50:  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  51:  */
  52: public abstract class ObjectHelper
  53: {
  54:   static TypeCode typeCode;
  55: 
  56:   /**
  57:    * Extract the array of object from the given {@link Any}.
  58:    */
  59:   public static org.omg.CORBA.Object extract(Any a)
  60:   {
  61:     try
  62:       {
  63:         return ((ObjectHolder) a.extract_Streamable()).value;
  64:       }
  65:     catch (ClassCastException ex)
  66:       {
  67:         BAD_OPERATION bad = new BAD_OPERATION("CORBA object expected");
  68:         bad.minor = Minor.Any;
  69:         throw bad;        
  70:       }
  71:   }
  72: 
  73:   /**
  74:    * Get the object repository id.
  75:    * @return the empty string.
  76:    */
  77:   public static String id()
  78:   {
  79:     return "";
  80:   }
  81: 
  82:   /**
  83:    * Insert the object into the given {@link Any}.
  84:    */
  85:   public static void insert(Any a, org.omg.CORBA.Object object)
  86:   {
  87:     a.insert_Streamable(new ObjectHolder(object));
  88:   }
  89: 
  90:   /**
  91:    * Read the object from the given CDR input stream.
  92:    */
  93:   public static org.omg.CORBA.Object read(InputStream istream)
  94:   {
  95:     return istream.read_Object();
  96:   }
  97: 
  98:   /**
  99:    * Return the object type code.
 100:    */
 101:   public static TypeCode type()
 102:   {
 103:     if (typeCode == null)
 104:       typeCode = ORB.init().get_primitive_tc(TCKind.tk_objref);
 105:     return typeCode;
 106:   }
 107: 
 108:   /**
 109:    * Write the object into the given CDR output stream.
 110:    */
 111:   public static void write(OutputStream ostream, org.omg.CORBA.Object value)
 112:   {
 113:     ostream.write_Object(value);
 114:   }
 115: }