1 /* TaggedComponentHelper.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.IOP; 40 41 import gnu.CORBA.Minor; 42 43 import org.omg.CORBA.Any; 44 import org.omg.CORBA.BAD_OPERATION; 45 import org.omg.CORBA.MARSHAL; 46 import org.omg.CORBA.ORB; 47 import org.omg.CORBA.StructMember; 48 import org.omg.CORBA.TCKind; 49 import org.omg.CORBA.TypeCode; 50 import org.omg.CORBA.portable.InputStream; 51 import org.omg.CORBA.portable.OutputStream; 52 53 import java.io.IOException; 54 55 /** 56 * A helper operations for the {@link TaggedComponent}. 57 * 58 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 59 */ 60 public abstract class TaggedComponentHelper 61 { 62 /** 63 * The cached typecode value, computed only once. 64 */ 65 private static TypeCode typeCode; 66 67 /** 68 * Create the TaggedComponent typecode (structure, named "TaggedComponent"). 69 * The typecode states that the structure contains the following fields: tag, 70 * component_data. 71 */ type()72 public static TypeCode type() 73 { 74 if (typeCode == null) 75 { 76 ORB orb = ORB.init(); 77 StructMember[] members = new StructMember[2]; 78 79 TypeCode field; 80 81 field = orb.create_alias_tc("IDL:omg.org/IOP/ComponentId:1.0", 82 "ComponentId", 83 orb.get_primitive_tc(TCKind.tk_ulong)); 84 members[0] = new StructMember("tag", field, null); 85 86 field = orb.create_sequence_tc(0, orb.get_primitive_tc(TCKind.tk_octet)); 87 members[1] = new StructMember("component_data", field, null); 88 typeCode = orb.create_struct_tc(id(), "TaggedComponent", members); 89 } 90 return typeCode; 91 } 92 93 /** 94 * Insert the TaggedComponent into the given Any. This method uses the 95 * TaggedComponentHolder. 96 * 97 * @param any the Any to insert into. 98 * @param that the TaggedComponent to insert. 99 */ insert(Any any, TaggedComponent that)100 public static void insert(Any any, TaggedComponent that) 101 { 102 any.insert_Streamable(new TaggedComponentHolder(that)); 103 } 104 105 /** 106 * Extract the TaggedComponent from given Any. This method uses the 107 * TaggedComponentHolder. 108 * 109 * @throws BAD_OPERATION if the passed Any does not contain TaggedComponent. 110 */ extract(Any any)111 public static TaggedComponent extract(Any any) 112 { 113 try 114 { 115 return ((TaggedComponentHolder) any.extract_Streamable()).value; 116 } 117 catch (ClassCastException cex) 118 { 119 BAD_OPERATION bad = new BAD_OPERATION("TaggedComponent expected"); 120 bad.minor = Minor.Any; 121 bad.initCause(cex); 122 throw bad; 123 } 124 } 125 126 /** 127 * Get the TaggedComponent repository id. 128 * 129 * @return "IDL:omg.org/IOP/TaggedComponent:1.0", always. 130 */ id()131 public static String id() 132 { 133 return "IDL:omg.org/IOP/TaggedComponent:1.0"; 134 } 135 136 /** 137 * Read the structure from the CDR intput stream. Expects the integer 138 * identifier of the tag, then the size of the tag data and then the specified 139 * number of bytes, representing the data of the tag. 140 * 141 * @param input a org.omg.CORBA.portable stream to read from. 142 */ read(InputStream input)143 public static TaggedComponent read(InputStream input) 144 { 145 TaggedComponent value = new TaggedComponent(); 146 value.tag = input.read_long(); 147 value.component_data = new byte[input.read_long()]; 148 try 149 { 150 input.read(value.component_data); 151 } 152 catch (IOException e) 153 { 154 MARSHAL m = new MARSHAL(); 155 m.minor = Minor.Encapsulation; 156 m.initCause(e); 157 throw m; 158 } 159 return value; 160 } 161 162 /** 163 * Write the structure to the CDR output stream. Writes the integer identifier 164 * of the tag, then the size of the tag data and then the specified number of 165 * bytes, representing the data of the tag. 166 * 167 * @param output a org.omg.CORBA.portable stream stream to write into. 168 * @param value a value to write. 169 */ write(OutputStream output, TaggedComponent value)170 public static void write(OutputStream output, TaggedComponent value) 171 { 172 output.write_long(value.tag); 173 output.write_long(value.component_data.length); 174 175 try 176 { 177 output.write(value.component_data); 178 } 179 catch (IOException e) 180 { 181 MARSHAL m = new MARSHAL(); 182 m.minor = Minor.Encapsulation; 183 m.initCause(e); 184 throw m; 185 } 186 } 187 }