001 /* IDLTypeHelper.java --
002 Copyright (C) 2005 Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
010
011 GNU Classpath is distributed in the hope that it will be useful, but
012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
015
016 You should have received a copy of the GNU General Public License
017 along with GNU Classpath; see the file COPYING. If not, write to the
018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
032 module. An independent module is a module which is not derived from
033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038
039 package org.omg.CORBA;
040
041 import gnu.CORBA.OrbRestricted;
042
043 import org.omg.CORBA.portable.Delegate;
044 import org.omg.CORBA.portable.InputStream;
045 import org.omg.CORBA.portable.ObjectImpl;
046 import org.omg.CORBA.portable.OutputStream;
047
048 /**
049 * A helper operations for the IDL type.
050 *
051 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
052 */
053 public abstract class IDLTypeHelper
054 {
055 /**
056 * Insert the IDL type into the given Any.
057 */
058 public static void insert(Any a, IDLType that)
059 {
060 OutputStream out = a.create_output_stream();
061 a.type(type());
062 write(out, that);
063 a.read_value(out.create_input_stream(), type());
064 }
065
066 /**
067 * Extract the IDL type from the given Any.
068 */
069 public static IDLType extract(Any a)
070 {
071 return read(a.create_input_stream());
072 }
073
074 /**
075 * Get the typecode of the IDL type (the interface typecode, name "IDLType").
076 */
077 public static TypeCode type()
078 {
079 return OrbRestricted.Singleton.create_interface_tc(IDLTypeHelper.id(),
080 "IDLType");
081 }
082
083 /**
084 * Return the IDLType repository id.
085 *
086 * @return "IDL:omg.org/CORBA/IDLType:1.0", always.
087 */
088 public static String id()
089 {
090 return "IDL:omg.org/CORBA/IDLType:1.0";
091 }
092
093 /**
094 * Read the IDL type from the given input stream.
095 * The method reads an object and narrows into IDL type using this
096 * helper.
097 */
098 public static IDLType read(InputStream istream)
099 {
100 return narrow(istream.read_Object());
101 }
102
103 /**
104 * Write the IDL type to the output stream (as CORBA object).
105 */
106 public static void write(OutputStream ostream, IDLType value)
107 {
108 ostream.write_Object((org.omg.CORBA.Object) value);
109 }
110
111 /**
112 * Narrows the CORBA object into the IDL type.
113 */
114 public static IDLType narrow(org.omg.CORBA.Object obj)
115 {
116 if (obj == null)
117 return null;
118 else if (obj instanceof IDLType)
119 return (IDLType) obj;
120 else if (!obj._is_a(id()))
121 throw new org.omg.CORBA.BAD_PARAM();
122 else
123 {
124 Delegate delegate = ((ObjectImpl) obj)._get_delegate();
125 return new _IDLTypeStub(delegate);
126 }
127 }
128 }