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1: /* IDLTypeHelper.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.OrbRestricted; 42: 43: import org.omg.CORBA.portable.Delegate; 44: import org.omg.CORBA.portable.InputStream; 45: import org.omg.CORBA.portable.ObjectImpl; 46: import org.omg.CORBA.portable.OutputStream; 47: 48: /** 49: * A helper operations for the IDL type. 50: * 51: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 52: */ 53: public abstract class IDLTypeHelper 54: { 55: /** 56: * The cached typecode value, computed once. 57: */ 58: private static TypeCode typeCode; 59: 60: /** 61: * Insert the IDL type into the given Any. 62: */ 63: public static void insert(Any a, IDLType that) 64: { 65: OutputStream out = a.create_output_stream(); 66: a.type(type()); 67: write(out, that); 68: a.read_value(out.create_input_stream(), type()); 69: } 70: 71: /** 72: * Extract the IDL type from the given Any. 73: */ 74: public static IDLType extract(Any a) 75: { 76: return read(a.create_input_stream()); 77: } 78: 79: /** 80: * Get the typecode of the IDL type (the interface typecode, name "IDLType"). 81: */ 82: public static TypeCode type() 83: { 84: if (typeCode == null) 85: { 86: typeCode = 87: OrbRestricted.Singleton.create_interface_tc(IDLTypeHelper.id(), 88: "IDLType" 89: ); 90: } 91: return typeCode; 92: } 93: 94: /** 95: * Return the IDLType repository id. 96: * 97: * @return "IDL:omg.org/CORBA/IDLType:1.0", always. 98: */ 99: public static String id() 100: { 101: return "IDL:omg.org/CORBA/IDLType:1.0"; 102: } 103: 104: /** 105: * Read the IDL type from the given input stream. 106: * The method reads an object and narrows into IDL type using this 107: * helper. 108: */ 109: public static IDLType read(InputStream istream) 110: { 111: return narrow(istream.read_Object()); 112: } 113: 114: /** 115: * Write the IDL type to the output stream (as CORBA object). 116: */ 117: public static void write(OutputStream ostream, IDLType value) 118: { 119: ostream.write_Object((org.omg.CORBA.Object) value); 120: } 121: 122: /** 123: * Narrows the CORBA object into the IDL type. 124: */ 125: public static IDLType narrow(org.omg.CORBA.Object obj) 126: { 127: if (obj == null) 128: return null; 129: else if (obj instanceof IDLType) 130: return (IDLType) obj; 131: else if (!obj._is_a(id())) 132: throw new org.omg.CORBA.BAD_PARAM(); 133: else 134: { 135: Delegate delegate = ((ObjectImpl) obj)._get_delegate(); 136: return new _IDLTypeStub(delegate); 137: } 138: }
GNU Classpath (0.20) |