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1: /* UnionMemberHelper.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.Restricted_ORB; 42: import gnu.CORBA.TypeCodeHelper; 43: 44: import org.omg.CORBA.portable.InputStream; 45: import org.omg.CORBA.portable.OutputStream; 46: 47: /** 48: * A helper operations for the union member. 49: * 50: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 51: */ 52: public abstract class UnionMemberHelper 53: { 54: /** 55: * The cached typecode value (computed once). 56: */ 57: private static TypeCode typeCode; 58: 59: /** 60: * Used in creating recursive unions. 61: */ 62: private static boolean active; 63: 64: /** 65: * Inset the union member into the given Any. 66: */ 67: public static void insert(Any a, UnionMember that) 68: { 69: OutputStream out = a.create_output_stream(); 70: a.type(type()); 71: write(out, that); 72: a.read_value(out.create_input_stream(), type()); 73: } 74: 75: /** 76: * Extract the union member from the given Any. 77: */ 78: public static UnionMember extract(Any a) 79: { 80: return read(a.create_input_stream()); 81: } 82: 83: /** 84: * Create and return the typecode for this union member. 85: */ 86: public static synchronized TypeCode type() 87: { 88: if (typeCode == null) 89: { 90: synchronized (TypeCode.class) 91: { 92: if (typeCode == null) 93: { 94: if (active) 95: { 96: return ORB.init().create_recursive_tc(id()); 97: } 98: active = true; 99: 100: ORB orb = Restricted_ORB.Singleton; 101: 102: StructMember[] members = new StructMember[ 4 ]; 103: TypeCode member; 104: member = orb.create_string_tc(0); 105: member = 106: orb.create_alias_tc(IdentifierHelper.id(), "Identifier", 107: member 108: ); 109: members [ 0 ] = new StructMember("name", member, null); 110: member = orb.get_primitive_tc(TCKind.tk_any); 111: members [ 1 ] = new StructMember("label", member, null); 112: member = orb.create_string_tc(0); 113: member = orb.get_primitive_tc(TCKind.tk_TypeCode); 114: members [ 2 ] = new StructMember("type", member, null); 115: member = IDLTypeHelper.type(); 116: members [ 3 ] = new StructMember("type_def", member, null); 117: typeCode = 118: orb.create_struct_tc(UnionMemberHelper.id(), "UnionMember", 119: members 120: ); 121: active = false; 122: } 123: } 124: } 125: return typeCode; 126: } 127: 128: /** 129: * Return the UnionMember repository id. 130: * 131: * @return "IDL:omg.org/CORBA/UnionMember:1.0", always. 132: */ 133: public static String id() 134: { 135: return "IDL:omg.org/CORBA/UnionMember:1.0"; 136: } 137: 138: /** 139: * Read the union member from the given stream. 140: */ 141: public static UnionMember read(InputStream istream) 142: { 143: try 144: { 145: UnionMember value = new UnionMember(); 146: value.name = istream.read_string(); 147: value.label = istream.read_any(); 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.initCause(ex); 156: throw m; 157: } 158: } 159: 160: /** 161: * Write the union member to the given stream. 162: */ 163: public static void write(OutputStream ostream, UnionMember value) 164: { 165: try 166: { 167: ostream.write_string(value.name); 168: ostream.write_any(value.label); 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.initCause(ex); 176: throw m; 177: } 178: }
GNU Classpath (0.17) |