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1: /* BindingIteratorHelper.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 gnu.CORBA.Minor; 42: import gnu.CORBA.OrbRestricted; 43: 44: import org.omg.CORBA.Any; 45: import org.omg.CORBA.BAD_OPERATION; 46: import org.omg.CORBA.BAD_PARAM; 47: import org.omg.CORBA.ORB; 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 {@link BindingIterator} 56: * 57: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 58: */ 59: public abstract class BindingIteratorHelper 60: { 61: /** 62: * The {@link BindingIterator} repository id. 63: */ 64: private static String _id = "IDL:omg.org/CosNaming/BindingIterator:1.0"; 65: 66: /** 67: * Extract the binding iterator from the given {@link Any}. 68: */ 69: public static BindingIterator extract(Any a) 70: { 71: try 72: { 73: return ((BindingIteratorHolder) a.extract_Streamable()).value; 74: } 75: catch (ClassCastException ex) 76: { 77: BAD_OPERATION bad = new BAD_OPERATION("Binding iterator expected"); 78: bad.initCause(ex); 79: bad.minor = Minor.Any; 80: throw bad; 81: } 82: } 83: 84: /** 85: * Return the binding iterator repository id. 86: */ 87: public static String id() 88: { 89: return _id; 90: } 91: 92: /** 93: * Insert the binding iterator into the given {@link Any}. 94: */ 95: public static void insert(Any a, BindingIterator that) 96: { 97: a.insert_Streamable(new BindingIteratorHolder(that)); 98: } 99: 100: /** 101: * Narrow the given object to the BindingIterator. The narrowing 102: * means either direct casting or re-instantiating with the same 103: * delegate. 104: * 105: * @param obj the object to cast. 106: * 107: * @return the casted binding iterator. 108: */ 109: public static BindingIterator narrow(org.omg.CORBA.Object obj) 110: { 111: if (obj == null) 112: return null; 113: else if (obj instanceof BindingIterator) 114: return (BindingIterator) obj; 115: else if (!obj._is_a(id())) 116: throw new BAD_PARAM(); 117: else 118: { 119: Delegate delegate = ((ObjectImpl) obj)._get_delegate(); 120: return new _BindingIteratorStub(delegate); 121: } 122: } 123: 124: /** 125: * Narrow the given object to the BindingIterator. No type-checking is 126: * performed to verify that the object actually supports the requested type. 127: * The {@link BAD_OPERATION} will be thrown if unsupported operations are 128: * invoked on the new returned reference, but no failure is expected at the 129: * time of the unchecked_narrow. 130: * 131: * @param obj the object to cast. 132: * 133: * @return the casted binding iterator. 134: * 135: * @since 1.5 136: * 137: * @see OMG issue 4158. 138: */ 139: public static BindingIterator unchecked_narrow(org.omg.CORBA.Object obj) 140: { 141: if (obj == null) 142: return null; 143: else if (obj instanceof BindingIterator) 144: return (BindingIterator) obj; 145: else 146: { 147: // Do not call the _is_a(..). 148: Delegate delegate = ((ObjectImpl) obj)._get_delegate(); 149: return new _BindingIteratorStub(delegate); 150: } 151: } 152: 153: /** 154: * Read the exception from the given CDR stream. 155: */ 156: public static BindingIterator read(InputStream istream) 157: { 158: return narrow(istream.read_Object(_BindingIteratorStub.class)); 159: } 160: 161: /** 162: * Create the type code for the BindingIterator. 163: */ 164: public static TypeCode type() 165: { 166: return OrbRestricted.Singleton.create_interface_tc(id(), "BindingIterator"); 167: } 168: 169: /** 170: * Write the exception to the CDR output stream. 171: */ 172: public static void write(OutputStream ostream, BindingIterator value) 173: { 174: ostream.write_Object((org.omg.CORBA.Object) value); 175: } 176: }