Source for org.omg.DynamicAny.DynAnySeqHelper

   1: /* DynAnySeq.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.DynamicAny;
  40: 
  41: import gnu.CORBA.DynAnySeqHolder;
  42: import gnu.CORBA.Minor;
  43: 
  44: import org.omg.CORBA.Any;
  45: import org.omg.CORBA.BAD_OPERATION;
  46: import org.omg.CORBA.MARSHAL;
  47: import org.omg.CORBA.ORB;
  48: import org.omg.CORBA.TypeCode;
  49: import org.omg.CORBA.portable.InputStream;
  50: import org.omg.CORBA.portable.OutputStream;
  51: 
  52: /**
  53:  * A helper operations for the array of {@link DynAny} ({@link DynAnySeq}).
  54:  * Following the 1.5 JDK specifications, DynAny (and hence an sequence of
  55:  * DynAny's) is always a local object, so the two methods of this helper
  56:  * ({@link #read} and {@link #write} are not in use, always throwing
  57:  * {@link MARSHAL}.
  58:  *
  59:  * @specnote always throwing MARSHAL in read and write ensures compatibility
  60:  * with other popular implementations like Sun's.
  61:  *
  62:  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  63:  */
  64: public abstract class DynAnySeqHelper
  65: {
  66:   /**
  67:    * The cached typecode value, computed only once.
  68:    */
  69:   private static TypeCode typeCode;
  70: 
  71:   public static TypeCode type()
  72:   {
  73:     if (typeCode == null)
  74:       {
  75:         ORB orb = ORB.init();
  76:         TypeCode t = orb.create_sequence_tc(0, DynAnyHelper.type());
  77:         typeCode = orb.create_alias_tc(id(), "DynAnySeq", t);
  78:       }
  79:     return typeCode;
  80:   }
  81: 
  82:   /**
  83:    * Insert the DynAnySeq into the given Any.
  84:    * This method uses the DynAnySeqHolder.
  85:    *
  86:    * @param any the Any to insert into.
  87:    * @param those the DynAny[] to insert.
  88:    */
  89:   public static void insert(Any any, DynAny[] those)
  90:   {
  91:     any.insert_Streamable(new DynAnySeqHolder(those));
  92:   }
  93: 
  94:   /**
  95:    * Extract the DynAnySeq from given Any.
  96:    * This method uses the DynAnySeqHolder.
  97:    *
  98:    * @throws BAD_OPERATION if the passed Any does not contain DynAnySeq.
  99:    */
 100:   public static DynAny[] extract(Any any)
 101:   {
 102:     try
 103:       {
 104:         return ((DynAnySeqHolder) any.extract_Streamable()).value;
 105:       }
 106:     catch (ClassCastException cex)
 107:       {
 108:         BAD_OPERATION bad = new BAD_OPERATION("DynAnySeq expected");
 109:         bad.initCause(cex);
 110:         bad.minor = Minor.Any;        
 111:         throw bad;
 112:       }
 113:   }
 114: 
 115:   /**
 116:    * Get the DynAnySeq repository id.
 117:    *
 118:    * @return "IDL:omg.org/DynamicAny/DynAnySeq:1.0", always.
 119:    */
 120:   public static String id()
 121:   {
 122:     return "IDL:omg.org/DynamicAny/DynAnySeq:1.0";
 123:   }
 124: 
 125:   /**
 126:    * The method should read this object from the CDR input stream, but
 127:    * (following the JDK 1.5 API) it does not.
 128:    *
 129:    * @param input a org.omg.CORBA.portable stream to read from.
 130:    *
 131:    * @specenote Sun throws the same exception.
 132:    *
 133:    * @throws MARSHAL always.
 134:    */
 135:   public static DynAny[] read(InputStream input)
 136:   {
 137:     throw new MARSHAL(DynAnyFactoryHelper.not_applicable(id()));
 138:   }
 139: 
 140:   /**
 141:    * The method should write this object to the CDR input stream, but
 142:    * (following the JDK 1.5 API) it does not.
 143:    *
 144:    * @param input a org.omg.CORBA.portable stream to read from.
 145:    *
 146:    * @specenote Sun throws the same exception.
 147:    *
 148:    * @throws MARSHAL always.
 149:    */
 150:   public static void write(OutputStream output, DynAny[] value)
 151:   {
 152:     throw new MARSHAL(DynAnyFactoryHelper.not_applicable(id()));
 153:   }