1 /* StructMemberHelper.java -- 2 Copyright (C) 2005 Free Software Foundation, Inc. 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 39 package org.omg.CORBA; 40 41 import gnu.CORBA.Minor; 42 import gnu.CORBA.OrbRestricted; 43 import gnu.CORBA.TypeCodeHelper; 44 45 import org.omg.CORBA.portable.InputStream; 46 import org.omg.CORBA.portable.OutputStream; 47 48 /** 49 * Defines a helper operations for StructMember. 50 * 51 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 52 */ 53 public abstract class StructMemberHelper 54 { 55 /** 56 * The cached typecode value, computed once. 57 */ 58 private static TypeCode typeCode; 59 60 /** 61 * This flag is used when creating typecodes for the recursive structures. 62 */ 63 private static boolean active; 64 65 /** 66 * Insert the structure member into the given Any. 67 */ insert(Any a, StructMember that)68 public static void insert(Any a, StructMember that) 69 { 70 OutputStream out = a.create_output_stream(); 71 a.type(type()); 72 write(out, that); 73 a.read_value(out.create_input_stream(), type()); 74 } 75 76 /** 77 * Extract the structure member from the given Any. 78 */ extract(Any a)79 public static StructMember extract(Any a) 80 { 81 return read(a.create_input_stream()); 82 } 83 84 /** 85 * Get a typecode for the StructMember. 86 */ type()87 public static synchronized TypeCode type() 88 { 89 if (typeCode == null) 90 { 91 ORB orb = OrbRestricted.Singleton; 92 93 synchronized (TypeCode.class) 94 { 95 if (typeCode == null) 96 { 97 if (active) 98 { 99 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 */ id()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 */ read(InputStream istream)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 */ write(OutputStream ostream, StructMember value)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 } 181