001 /* StructMemberHelper.java -- 002 Copyright (C) 2005 Free Software Foundation, Inc. 003 004 This file is part of GNU Classpath. 005 006 GNU Classpath is free software; you can redistribute it and/or modify 007 it under the terms of the GNU General Public License as published by 008 the Free Software Foundation; either version 2, or (at your option) 009 any later version. 010 011 GNU Classpath is distributed in the hope that it will be useful, but 012 WITHOUT ANY WARRANTY; without even the implied warranty of 013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 General Public License for more details. 015 016 You should have received a copy of the GNU General Public License 017 along with GNU Classpath; see the file COPYING. If not, write to the 018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 019 02110-1301 USA. 020 021 Linking this library statically or dynamically with other modules is 022 making a combined work based on this library. Thus, the terms and 023 conditions of the GNU General Public License cover the whole 024 combination. 025 026 As a special exception, the copyright holders of this library give you 027 permission to link this library with independent modules to produce an 028 executable, regardless of the license terms of these independent 029 modules, and to copy and distribute the resulting executable under 030 terms of your choice, provided that you also meet, for each linked 031 independent module, the terms and conditions of the license of that 032 module. An independent module is a module which is not derived from 033 or based on this library. If you modify this library, you may extend 034 this exception to your version of the library, but you are not 035 obligated to do so. If you do not wish to do so, delete this 036 exception statement from your version. */ 037 038 039 package org.omg.CORBA; 040 041 import gnu.CORBA.Minor; 042 import gnu.CORBA.OrbRestricted; 043 import gnu.CORBA.TypeCodeHelper; 044 045 import org.omg.CORBA.portable.InputStream; 046 import org.omg.CORBA.portable.OutputStream; 047 048 /** 049 * Defines a helper operations for StructMember. 050 * 051 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 052 */ 053 public 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 }