001/* IDLTypeHelper.java -- 002 Copyright (C) 2005 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package org.omg.CORBA; 040 041import gnu.CORBA.OrbRestricted; 042 043import org.omg.CORBA.portable.Delegate; 044import org.omg.CORBA.portable.InputStream; 045import org.omg.CORBA.portable.ObjectImpl; 046import 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 */ 053public 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}