001/* StructMemberHelper.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.Minor; 042import gnu.CORBA.OrbRestricted; 043import gnu.CORBA.TypeCodeHelper; 044 045import org.omg.CORBA.portable.InputStream; 046import org.omg.CORBA.portable.OutputStream; 047 048/** 049 * Defines a helper operations for StructMember. 050 * 051 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 052 */ 053public abstract class StructMemberHelper 054{ 055 /** 056 * The cached typecode value, computed once. 057 */ 058 private static TypeCode typeCode; 059 060 /** 061 * This flag is used when creating typecodes for the recursive structures. 062 */ 063 private static boolean active; 064 065 /** 066 * Insert the structure member into the given Any. 067 */ 068 public static void insert(Any a, StructMember that) 069 { 070 OutputStream out = a.create_output_stream(); 071 a.type(type()); 072 write(out, that); 073 a.read_value(out.create_input_stream(), type()); 074 } 075 076 /** 077 * Extract the structure member from the given Any. 078 */ 079 public static StructMember extract(Any a) 080 { 081 return read(a.create_input_stream()); 082 } 083 084 /** 085 * Get a typecode for the StructMember. 086 */ 087 public static synchronized TypeCode type() 088 { 089 if (typeCode == null) 090 { 091 ORB orb = OrbRestricted.Singleton; 092 093 synchronized (TypeCode.class) 094 { 095 if (typeCode == null) 096 { 097 if (active) 098 { 099 return orb.create_recursive_tc(id()); 100 } 101 active = true; 102 103 StructMember[] members = new StructMember[ 3 ]; 104 TypeCode member = null; 105 106 member = orb.create_string_tc(0); 107 member = 108 orb.create_alias_tc(IdentifierHelper.id(), "Identifier", 109 member 110 ); 111 members [ 0 ] = new StructMember("name", member, null); 112 113 member = orb.get_primitive_tc(TCKind.tk_TypeCode); 114 115 members [ 1 ] = new StructMember("type", member, null); 116 members [ 2 ] = 117 new StructMember("type_def", IDLTypeHelper.type(), null); 118 typeCode = 119 orb.create_struct_tc(StructMemberHelper.id(), "StructMember", 120 members 121 ); 122 active = false; 123 } 124 } 125 } 126 return typeCode; 127 } 128 129 /** 130 * Return the StructMember repository id. 131 * 132 * @return "IDL:omg.org/CORBA/StructMember:1.0", always. 133 */ 134 public static String id() 135 { 136 return "IDL:omg.org/CORBA/StructMember:1.0"; 137 } 138 139 /** 140 * Read the StructMember from the input stream. 141 */ 142 public static StructMember read(InputStream istream) 143 { 144 try 145 { 146 StructMember value = new StructMember(); 147 value.name = istream.read_string(); 148 value.type = TypeCodeHelper.read(istream); 149 value.type_def = IDLTypeHelper.read(istream); 150 return value; 151 } 152 catch (UserException ex) 153 { 154 MARSHAL m = new MARSHAL(); 155 m.minor = Minor.UserException; 156 m.initCause(ex); 157 throw m; 158 } 159 } 160 161 /** 162 * Write the StructMember to the input stream. 163 */ 164 public static void write(OutputStream ostream, StructMember value) 165 { 166 try 167 { 168 ostream.write_string(value.name); 169 TypeCodeHelper.write(ostream, value.type); 170 IDLTypeHelper.write(ostream, value.type_def); 171 } 172 catch (UserException ex) 173 { 174 MARSHAL m = new MARSHAL(); 175 m.minor = Minor.UserException; 176 m.initCause(ex); 177 throw m; 178 } 179 } 180}