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1: /* NamingContextHelper.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.CosNaming; 40: 41: import org.omg.CORBA.Any; 42: import org.omg.CORBA.BAD_OPERATION; 43: import org.omg.CORBA.BAD_PARAM; 44: import org.omg.CORBA.ORB; 45: import org.omg.CORBA.TypeCode; 46: import org.omg.CORBA.portable.Delegate; 47: import org.omg.CORBA.portable.InputStream; 48: import org.omg.CORBA.portable.ObjectImpl; 49: import org.omg.CORBA.portable.OutputStream; 50: 51: /** 52: * The helper operations for the naming context. 53: * 54: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 55: */ 56: public abstract class NamingContextHelper 57: { 58: /** 59: * The naming context repository id. 60: */ 61: private static String _id = "IDL:omg.org/CosNaming/NamingContext:1.0"; 62: 63: /** 64: * The cached {@link NamingContext} typecode. 65: */ 66: private static TypeCode typeCode; 67: 68: /** 69: * Extract the naming context from the given {@link Any}. 70: */ 71: public static NamingContext extract(Any a) 72: { 73: try 74: { 75: return ((NamingContextHolder) a.extract_Streamable()).value; 76: } 77: catch (ClassCastException ex) 78: { 79: BAD_OPERATION bad = new BAD_OPERATION("Naming context expected"); 80: bad.initCause(ex); 81: throw bad; 82: } 83: } 84: 85: /** 86: * Get the {@link NamingContext} repository id. 87: */ 88: public static String id() 89: { 90: return _id; 91: } 92: 93: /** 94: * Insert the naming context into the given {@link Any} 95: */ 96: public static void insert(Any a, NamingContext that) 97: { 98: a.insert_Streamable(new NamingContextHolder(that)); 99: } 100: 101: /** 102: * Cast the passed object into the NamingContext. If the 103: * object has a different java type, create an instance 104: * of the NamingContext, using the same delegate, as for 105: * the passed parameter. 106: * 107: * If the object repository Id indicates that it is an instance of 108: * {@link NamingContextExt} that is a subclass of the NamingContext, 109: * the functionality is delegated to {@link NamingContextHelper#narrow}. 110: * 111: * @param obj the object to cast. 112: * @return casted instance. 113: * 114: * @throws BAD_PARAM if the passed object is not an instance of 115: * {@link NamingContext} or {@link NamingContextExt}. 116: */ 117: public static NamingContext narrow(org.omg.CORBA.Object obj) 118: { 119: if (obj == null) 120: return null; 121: else if (obj instanceof NamingContext) 122: return (NamingContext) obj; 123: else if (obj._is_a(id())) 124: { 125: Delegate delegate = ((ObjectImpl) obj)._get_delegate(); 126: return new _NamingContextStub(delegate); 127: } 128: else if (obj._is_a(NamingContextExtHelper.id())) 129: return NamingContextExtHelper.narrow(obj); 130: else 131: throw new BAD_PARAM(); 132: } 133: 134: /** 135: * Read the naming context from the given CDR input stream. 136: */ 137: public static NamingContext read(InputStream istream) 138: { 139: return narrow(istream.read_Object(_NamingContextStub.class)); 140: } 141: 142: /** 143: * Get the type code of the {@link NamingContext}. 144: */ 145: public static TypeCode type() 146: { 147: if (typeCode == null) 148: typeCode = ORB.init().create_interface_tc(id(), "NamingContext"); 149: return typeCode; 150: } 151: 152: /** 153: * Write the given naming context into the given CDR output stream. 154: */ 155: public static void write(OutputStream ostream, NamingContext value) 156: { 157: ostream.write_Object(value); 158: } 159: }
GNU Classpath (0.17) |