001/* CurrentHelper.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.CORBA; 040 041import gnu.CORBA.OrbRestricted; 042 043import org.omg.CORBA.Any; 044import org.omg.CORBA.BAD_OPERATION; 045import org.omg.CORBA.TypeCode; 046import org.omg.CORBA.portable.Delegate; 047import org.omg.CORBA.portable.InputStream; 048import org.omg.CORBA.portable.ObjectImpl; 049import org.omg.CORBA.portable.OutputStream; 050 051/** 052* The helper operations for the CORBA object {@link Current}. 053* 054* @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 055*/ 056public abstract class CurrentHelper 057{ 058 /** 059 * The Current stub (proxy), used on the client side. 060 * The {@link Current} methods should contain the code for remote 061 * invocaton. As there are no methods defined, this class is only 062 * used for the formal support of the 063 * {@link #narrow(org.omg.CORBA.Object)}. 064 */ 065 private static class _CurrentStub 066 extends ObjectImpl 067 implements Current 068 { 069 /** 070 * Create the naming context stub with the given delegate. 071 */ 072 public _CurrentStub(Delegate delegate) 073 { 074 _set_delegate(delegate); 075 } 076 077 /** 078 * Return the array of repository ids for this object. 079 */ 080 public String[] _ids() 081 { 082 return new String[] { id() }; 083 } 084 } 085 086 /** 087 * Get the type code of the {@link Current}. 088 */ 089 public static TypeCode type() 090 { 091 return 092 OrbRestricted.Singleton.create_interface_tc(id(), "Current"); 093 } 094 095 /** 096 * Insert the Current into the given Any. 097 * 098 * @param any the Any to insert into. 099 * @param that the Current to insert. 100 */ 101 public static void insert(Any any, Current that) 102 { 103 any.insert_Object(that); 104 } 105 106 /** 107 * Extract the Current from given Any. 108 * 109 * @throws BAD_OPERATION if the passed Any does not contain Current. 110 */ 111 public static Current extract(Any any) 112 { 113 return narrow(any.extract_Object()); 114 } 115 116 /** 117 * Get the Current repository id. 118 * 119 * @return "IDL:omg.org/CORBA/Current:1.0", always. 120 */ 121 public static String id() 122 { 123 return "IDL:omg.org/CORBA/Current:1.0"; 124 } 125 126 /** 127 * Cast the passed object into the Current. If the 128 * object has a different java type, create an instance 129 * of the _CurrentStub, using the same delegate, as for 130 * the passed parameter. Hence, unlike java type cast, 131 * this method may return a different object, than has been passed. 132 * 133 * @param obj the object to narrow. 134 * @return narrowed instance. 135 * 136 * @throws BAD_PARAM if the passed object is not a Current. 137 */ 138 public static Current narrow(org.omg.CORBA.Object obj) 139 { 140 if (obj == null) 141 return null; 142 else if (obj instanceof Current) 143 return (Current) obj; 144 else if (!obj._is_a(id())) 145 throw new BAD_PARAM("Not a Current"); 146 else 147 { 148 Delegate delegate = ((ObjectImpl) obj)._get_delegate(); 149 return new _CurrentStub(delegate); 150 } 151 } 152 153 /** 154 * Read the Current from the CDR intput stream (IOR profile expected). 155 * 156 * @param input a org.omg.CORBA.portable stream to read from. 157 */ 158 public static Current read(InputStream input) 159 { 160 return narrow(input.read_Object()); 161 } 162 163 /** 164 * Write the Current to the CDR output stream (as IOR profile). 165 * 166 * @param output a org.omg.CORBA.portable stream stream to write into. 167 * @param value a value to write. 168 */ 169 public static void write(OutputStream output, Current value) 170 { 171 output.write_Object(value); 172 } 173}