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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 org.omg.CORBA.Any; 42: import org.omg.CORBA.BAD_OPERATION; 43: import org.omg.CORBA.MARSHAL; 44: import org.omg.CORBA.ORB; 45: import org.omg.CORBA.StructMember; 46: import org.omg.CORBA.TCKind; 47: import org.omg.CORBA.TypeCode; 48: import org.omg.CORBA.portable.InputStream; 49: import org.omg.CORBA.portable.OutputStream; 50: 51: import java.io.IOException; 52: 53: /** 54: * A helper operations for the {@link TaggedComponent}. 55: * 56: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 57: */ 58: public abstract class TaggedComponentHelper 59: { 60: /** 61: * The cached typecode value, computed only once. 62: */ 63: private static TypeCode typeCode; 64: 65: /** 66: * Create the TaggedComponent typecode (structure, named "TaggedComponent"). 67: * The typecode states that the structure contains the following fields: tag, 68: * component_data. 69: */ 70: public static TypeCode type() 71: { 72: if (typeCode == null) 73: { 74: ORB orb = ORB.init(); 75: StructMember[] members = new StructMember[2]; 76: 77: TypeCode field; 78: 79: field = orb.create_alias_tc("IDL:omg.org/IOP/ComponentId:1.0", 80: "ComponentId", 81: orb.get_primitive_tc(TCKind.tk_ulong)); 82: members[0] = new StructMember("tag", field, null); 83: 84: field = orb.create_sequence_tc(0, orb.get_primitive_tc(TCKind.tk_octet)); 85: members[1] = new StructMember("component_data", field, null); 86: typeCode = orb.create_struct_tc(id(), "TaggedComponent", members); 87: } 88: return typeCode; 89: } 90: 91: /** 92: * Insert the TaggedComponent into the given Any. This method uses the 93: * TaggedComponentHolder. 94: * 95: * @param any the Any to insert into. 96: * @param that the TaggedComponent to insert. 97: */ 98: public static void insert(Any any, TaggedComponent that) 99: { 100: any.insert_Streamable(new TaggedComponentHolder(that)); 101: } 102: 103: /** 104: * Extract the TaggedComponent from given Any. This method uses the 105: * TaggedComponentHolder. 106: * 107: * @throws BAD_OPERATION if the passed Any does not contain TaggedComponent. 108: */ 109: public static TaggedComponent extract(Any any) 110: { 111: try 112: { 113: return ((TaggedComponentHolder) any.extract_Streamable()).value; 114: } 115: catch (ClassCastException cex) 116: { 117: BAD_OPERATION bad = new BAD_OPERATION("TaggedComponent expected"); 118: bad.initCause(cex); 119: throw bad; 120: } 121: } 122: 123: /** 124: * Get the TaggedComponent repository id. 125: * 126: * @return "IDL:omg.org/IOP/TaggedComponent:1.0", always. 127: */ 128: public static String id() 129: { 130: return "IDL:omg.org/IOP/TaggedComponent:1.0"; 131: } 132: 133: /** 134: * Read the structure from the CDR intput stream. Expects the integer 135: * identifier of the tag, then the size of the tag data and then the specified 136: * number of bytes, representing the data of the tag. 137: * 138: * @param input a org.omg.CORBA.portable stream to read from. 139: */ 140: public static TaggedComponent read(InputStream input) 141: { 142: TaggedComponent value = new TaggedComponent(); 143: value.tag = input.read_long(); 144: value.component_data = new byte[input.read_long()]; 145: try 146: { 147: input.read(value.component_data); 148: } 149: catch (IOException e) 150: { 151: MARSHAL m = new MARSHAL(); 152: m.initCause(e); 153: throw m; 154: } 155: return value; 156: } 157: 158: /** 159: * Write the structure to the CDR output stream. Writes the integer identifier 160: * of the tag, then the size of the tag data and then the specified number of 161: * bytes, representing the data of the tag. 162: * 163: * @param output a org.omg.CORBA.portable stream stream to write into. 164: * @param value a value to write. 165: */ 166: public static void write(OutputStream output, TaggedComponent value) 167: { 168: output.write_long(value.tag); 169: output.write_long(value.component_data.length); 170: 171: try 172: { 173: output.write(value.component_data); 174: } 175: catch (IOException e) 176: { 177: MARSHAL m = new MARSHAL(); 178: m.initCause(e); 179: throw m; 180: } 181: }
GNU Classpath (0.18) |