001/* POAHelper.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.PortableServer; 040 041import gnu.CORBA.Minor; 042import gnu.CORBA.OrbRestricted; 043 044import org.omg.CORBA.BAD_OPERATION; 045import org.omg.CORBA.BAD_PARAM; 046import org.omg.CORBA.TypeCode; 047import org.omg.CORBA.Any; 048import org.omg.CORBA.portable.InputStream; 049import org.omg.CORBA.MARSHAL; 050import org.omg.CORBA.portable.OutputStream; 051 052/** 053 * The helper operations for the CORBA object {@link POA}. 054 * 055 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 056 */ 057public abstract class POAHelper 058{ 059 /** 060 * Cast the passed object into the POA. As POA is a local object, the method 061 * just uses java type cast. 062 * 063 * @param obj the object to narrow. 064 * @return narrowed instance. 065 * @throws BAD_PARAM if the passed object is not a POA. 066 */ 067 public static POA narrow(org.omg.CORBA.Object obj) 068 { 069 try 070 { 071 return (POA) obj; 072 } 073 catch (ClassCastException cex) 074 { 075 throw new BAD_PARAM(obj.getClass().getName() + " is not a POA"); 076 } 077 } 078 079 /** 080 * Get the type code of the {@link POA}. 081 */ 082 public static TypeCode type() 083 { 084 return OrbRestricted.Singleton.create_interface_tc(id(), "POA"); 085 } 086 087 /** 088 * Insert the POA into the given Any. 089 * 090 * @param any the Any to insert into. 091 * 092 * @param that the POA to insert. 093 */ 094 public static void insert(Any any, POA that) 095 { 096 any.insert_Object(that); 097 } 098 099 /** 100 * Extract the POA from given Any. 101 * 102 * @throws BAD_OPERATION if the passed Any does not contain POA. 103 */ 104 public static POA extract(Any any) 105 { 106 return narrow(any.extract_Object()); 107 } 108 109 /** 110 * Get the POA repository id. 111 * 112 * @return "IDL:omg.org/PortableServer/POA:2.3", always. 113 */ 114 public static String id() 115 { 116 return "IDL:omg.org/PortableServer/POA:2.3"; 117 } 118 119 /** 120 * This should read POA from the CDR input stream, but, following the specs, 121 * it doesnot. The jdk 1.5 API specification defines that POA cannot be 122 * exported. 123 * 124 * @param input a org.omg.CORBA.portable stream to read from. 125 * 126 * @specenote Sun throws the same exception. 127 * 128 * @throws MARSHAL, always. 129 */ 130 public static POA read(InputStream input) 131 { 132 MARSHAL m = new MARSHAL("Inappropriate"); 133 m.minor = Minor.Inappropriate; 134 throw m; 135 } 136 137 /** 138 * This should read POA from the CDR input stream, but, following the specs, 139 * it doesnot. The jdk 1.5 API specification defines that POA cannot be 140 * exported. 141 * 142 * @param output a org.omg.CORBA.portable stream to write into. 143 * 144 * @specenote Sun throws the same exception. 145 * 146 * @throws MARSHAL, always. 147 */ 148 public static void write(OutputStream output, POA value) 149 { 150 MARSHAL m = new MARSHAL("Inappropriate"); 151 m.minor = Minor.Inappropriate; 152 throw m; 153 } 154}