001/* NamingContextExtHelper.java -- 002 Copyright (C) 2005, 2006 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.CosNaming; 040 041import gnu.CORBA.Minor; 042import gnu.CORBA.OrbRestricted; 043 044import org.omg.CORBA.Any; 045import org.omg.CORBA.BAD_OPERATION; 046import org.omg.CORBA.BAD_PARAM; 047import org.omg.CORBA.TypeCode; 048import org.omg.CORBA.portable.Delegate; 049import org.omg.CORBA.portable.InputStream; 050import org.omg.CORBA.portable.ObjectImpl; 051import org.omg.CORBA.portable.OutputStream; 052 053/** 054 * The helper operations for the extended naming context. 055 * 056 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 057 */ 058public abstract class NamingContextExtHelper 059{ 060 /** 061 * The naming context repository id. 062 */ 063 private static String _id = "IDL:omg.org/CosNaming/NamingContextExt:1.0"; 064 065 /** 066 * Extract the naming context from the given {@link Any}. 067 */ 068 public static NamingContextExt extract(Any a) 069 { 070 try 071 { 072 return ((NamingContextExtHolder) a.extract_Streamable()).value; 073 } 074 catch (ClassCastException ex) 075 { 076 BAD_OPERATION bad = new BAD_OPERATION("NamingContextExt expected"); 077 bad.initCause(ex); 078 bad.minor = Minor.Any; 079 throw bad; 080 } 081 } 082 083 /** 084 * Get the {@link NamingContextExt} repository id. 085 */ 086 public static String id() 087 { 088 return _id; 089 } 090 091 /** 092 * Insert the naming context into the given {@link Any} 093 */ 094 public static void insert(Any a, NamingContextExt that) 095 { 096 a.insert_Streamable(new NamingContextExtHolder(that)); 097 } 098 099 /** 100 * Cast the passed object into the NamingContextExt. If the 101 * object has a different java type, create an instance 102 * of the NamingContextExt, using the same delegate, as for 103 * the passed parameter. Hence this method may return 104 * a different object, than has been passed. 105 * 106 * @param obj the object to cast. 107 * @return casted instance. 108 */ 109 public static NamingContextExt narrow(org.omg.CORBA.Object obj) 110 { 111 if (obj == null) 112 return null; 113 else if (obj instanceof NamingContextExt) 114 return (NamingContextExt) obj; 115 else if (!obj._is_a(id())) 116 throw new BAD_PARAM(); 117 else 118 { 119 Delegate delegate = ((ObjectImpl) obj)._get_delegate(); 120 return new _NamingContextExtStub(delegate); 121 } 122 } 123 124 /** 125 * Narrow the given object to the NamingContextExt. No type-checking is 126 * performed to verify that the object actually supports the requested type. 127 * The {@link BAD_OPERATION} will be thrown if unsupported operations are 128 * invoked on the new returned reference, but no failure is expected at the 129 * time of the unchecked_narrow. See OMG issue 4158. 130 * 131 * @param obj the object to cast. 132 * 133 * @return the casted NamingContextExt 134 * 135 * @since 1.5 136 */ 137 public static NamingContextExt unchecked_narrow(org.omg.CORBA.Object obj) 138 { 139 if (obj == null) 140 return null; 141 else if (obj instanceof NamingContextExt) 142 return (NamingContextExt) obj; 143 else 144 { 145 // Do not call the _is_a(..). 146 Delegate delegate = ((ObjectImpl) obj)._get_delegate(); 147 return new _NamingContextExtStub(delegate); 148 } 149 } 150 151 /** 152 * Read the extended naming context from the given CDR input stream. 153 */ 154 public static NamingContextExt read(InputStream istream) 155 { 156 return narrow(istream.read_Object(_NamingContextExtStub.class)); 157 } 158 159 /** 160 * Get the type code of the {@link NamingContextExt}. 161 */ 162 public static TypeCode type() 163 { 164 return OrbRestricted.Singleton.create_interface_tc(NamingContextExtHelper.id(), 165 "NamingContextExt"); 166 } 167 168 /** 169 * Write the given extended naming context into the given CDR output stream. 170 */ 171 public static void write(OutputStream ostream, NamingContextExt value) 172 { 173 ostream.write_Object(value); 174 } 175}