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1: /* CurrentHelper.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.Any; 44: import org.omg.CORBA.BAD_OPERATION; 45: import org.omg.CORBA.ORB; 46: import org.omg.CORBA.StructMember; 47: import org.omg.CORBA.TCKind; 48: import org.omg.CORBA.TypeCode; 49: import org.omg.CORBA.portable.Delegate; 50: import org.omg.CORBA.portable.InputStream; 51: import org.omg.CORBA.portable.ObjectImpl; 52: import org.omg.CORBA.portable.OutputStream; 53: 54: /** 55: * The helper operations for the CORBA object {@link Current}. 56: * 57: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 58: */ 59: public abstract class CurrentHelper 60: { 61: /** 62: * The Current stub (proxy), used on the client side. 63: * The {@link Current} methods should contain the code for remote 64: * invocaton. As there are no methods defined, this class is only 65: * used for the formal support of the 66: * {@link #narrow(org.omg.CORBA.Object)}. 67: */ 68: private static class _CurrentStub 69: extends ObjectImpl 70: implements Current 71: { 72: /** 73: * Create the naming context stub with the given delegate. 74: */ 75: public _CurrentStub(Delegate delegate) 76: { 77: _set_delegate(delegate); 78: } 79: 80: /** 81: * Return the array of repository ids for this object. 82: */ 83: public String[] _ids() 84: { 85: return new String[] { id() }; 86: } 87: } 88: 89: /** 90: * Get the type code of the {@link Current}. 91: */ 92: public static TypeCode type() 93: { 94: return 95: OrbRestricted.Singleton.create_interface_tc(id(), "Current"); 96: } 97: 98: /** 99: * Insert the Current into the given Any. 100: * 101: * @param any the Any to insert into. 102: * @param that the Current to insert. 103: */ 104: public static void insert(Any any, Current that) 105: { 106: any.insert_Object(that); 107: } 108: 109: /** 110: * Extract the Current from given Any. 111: * 112: * @throws BAD_OPERATION if the passed Any does not contain Current. 113: */ 114: public static Current extract(Any any) 115: { 116: return narrow(any.extract_Object()); 117: } 118: 119: /** 120: * Get the Current repository id. 121: * 122: * @return "IDL:omg.org/CORBA/Current:1.0", always. 123: */ 124: public static String id() 125: { 126: return "IDL:omg.org/CORBA/Current:1.0"; 127: } 128: 129: /** 130: * Cast the passed object into the Current. If the 131: * object has a different java type, create an instance 132: * of the _CurrentStub, using the same delegate, as for 133: * the passed parameter. Hence, unlike java type cast, 134: * this method may return a different object, than has been passed. 135: * 136: * @param obj the object to narrow. 137: * @return narrowed instance. 138: * 139: * @throws BAD_PARAM if the passed object is not a Current. 140: */ 141: public static Current narrow(org.omg.CORBA.Object obj) 142: { 143: if (obj == null) 144: return null; 145: else if (obj instanceof Current) 146: return (Current) obj; 147: else if (!obj._is_a(id())) 148: throw new BAD_PARAM("Not a Current"); 149: else 150: { 151: Delegate delegate = ((ObjectImpl) obj)._get_delegate(); 152: return new _CurrentStub(delegate); 153: } 154: } 155: 156: /** 157: * Read the Current from the CDR intput stream (IOR profile expected). 158: * 159: * @param input a org.omg.CORBA.portable stream to read from. 160: */ 161: public static Current read(InputStream input) 162: { 163: return narrow(input.read_Object()); 164: } 165: 166: /** 167: * Write the Current to the CDR output stream (as IOR profile). 168: * 169: * @param output a org.omg.CORBA.portable stream stream to write into. 170: * @param value a value to write. 171: */ 172: public static void write(OutputStream output, Current value) 173: { 174: output.write_Object(value); 175: }