1 /* RmiNamingEnumeration.java -- handles rmi: urls 2 Copyright (C) 2006 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 gnu.javax.naming.jndi.url.rmi; 40 41 import java.util.NoSuchElementException; 42 43 import javax.naming.NamingEnumeration; 44 import javax.naming.NamingException; 45 46 /** 47 * Iterates over name class pairs, obtaining values first from the binding list 48 * and then from the binding iterator. 49 * 50 * @author Audrius Meskauskas 51 */ 52 public abstract class RmiNamingEnumeration implements NamingEnumeration 53 { 54 /** 55 * The array of bindings, returned at once. 56 */ 57 String[] list; 58 59 /** 60 * The position of the element in the binding list, that must be returned 61 * during the subsequent call of the next(). If this field is grater or equal 62 * to the lenght of the list, the subsequent values must be requested from the 63 * iterator. 64 */ 65 int p; 66 RmiNamingEnumeration(String[] bindingList)67 RmiNamingEnumeration(String[] bindingList) 68 { 69 list = bindingList; 70 } 71 72 /** 73 * Convert from the CORBA binding into that this enumeration should return. 74 * 75 * @param binding 76 * the binding to convert 77 * @return the value, that must be returned by the {@link #next()}. 78 */ convert(String binding)79 public abstract Object convert(String binding); 80 81 /** 82 * Checks if there are more elements to return. 83 * 84 * @throws NamingException 85 * never 86 */ hasMore()87 public boolean hasMore() throws NamingException 88 { 89 return hasMoreElements(); 90 } 91 92 /** 93 * Returns the next element. 94 * 95 * @throws NamingException 96 * never 97 */ next()98 public Object next() throws NamingException 99 { 100 return nextElement(); 101 } 102 103 /** 104 * Checks if there are more elements to return. 105 */ hasMoreElements()106 public boolean hasMoreElements() 107 { 108 return p < list.length; 109 } 110 111 /** 112 * Returns the next element. 113 */ nextElement()114 public Object nextElement() 115 { 116 if (p < list.length) 117 return convert(list[p++]); 118 else 119 throw new NoSuchElementException(); 120 } 121 122 /** 123 * Nothing to do in this method. 124 */ close()125 public void close() 126 { 127 // Nothing to do here. 128 } 129 130 } 131