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1: /* Binding_iterator.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 gnu.CORBA.NamingService; 40: 41: import org.omg.CosNaming.Binding; 42: import org.omg.CosNaming.BindingHolder; 43: import org.omg.CosNaming.BindingListHolder; 44: import org.omg.CosNaming.BindingType; 45: import org.omg.CosNaming.NameComponent; 46: import org.omg.CosNaming._BindingIteratorImplBase; 47: 48: /** 49: * The implementation of the {@link BindingIterator}. 50: * 51: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 52: */ 53: public class Binding_iterator_impl 54: extends _BindingIteratorImplBase 55: { 56: /** 57: * The value, returned by the {@link #next_one} when there 58: * are no bindings available. 59: */ 60: private static final Binding no_more_bindings = 61: new Binding(new NameComponent[ 0 ], BindingType.nobject); 62: 63: /** 64: * The collection of the available bindings. 65: */ 66: private final Binding[] bindings; 67: 68: /** 69: * The position of the internal iterator pointer. 70: */ 71: private int p; 72: 73: public Binding_iterator_impl(Binding[] a_bindings) 74: { 75: bindings = a_bindings; 76: } 77: 78: /** 79: * Disconnect the iterator from its ORB. The iterator will 80: * no longer be accessible and will be a subject of the 81: * garbage collection. 82: */ 83: public void destroy() 84: { 85: _orb().disconnect(this); 86: } 87: 88: /** 89: * Return the desired amount of bindings. 90: * 91: * @param amount the maximal number of bindings to return. 92: * @param a_list a holder to store the returned bindings. 93: * 94: * @return false if there are no more bindings available, 95: * true otherwise. 96: */ 97: public boolean next_n(int amount, BindingListHolder a_list) 98: { 99: if (p < bindings.length) 100: { 101: int n = bindings.length - p; 102: if (n > amount) 103: n = amount; 104: 105: a_list.value = new Binding[ n ]; 106: for (int i = 0; i < n; i++) 107: a_list.value [ i ] = bindings [ p++ ]; 108: 109: return true; 110: } 111: else 112: { 113: a_list.value = new Binding[ 0 ]; 114: return false; 115: } 116: } 117: 118: /** 119: * Return the next binding. 120: * 121: * @param a_binding a holder, where the next binding will be stored. 122: * 123: * @return false if there are no more bindings available, true 124: * otherwise. 125: */ 126: public boolean next_one(BindingHolder a_binding) 127: { 128: if (p < bindings.length) 129: { 130: a_binding.value = (Binding) bindings [ p++ ]; 131: return true; 132: } 133: else 134: { 135: a_binding.value = no_more_bindings; 136: return false; 137: } 138: } 139: }