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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: */ 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: */ 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: */ 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: */ 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: */ 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: */ 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: }
GNU Classpath (0.20) |