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1: /* Binding_iterator.java -- 2: Copyright (C) 2005, 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.CORBA.NamingService; 40: 41: import gnu.CORBA.SafeForDirectCalls; 42: 43: import org.omg.CosNaming.Binding; 44: import org.omg.CosNaming.BindingHolder; 45: import org.omg.CosNaming.BindingListHolder; 46: import org.omg.CosNaming.BindingType; 47: import org.omg.CosNaming.NameComponent; 48: import org.omg.CosNaming._BindingIteratorImplBase; 49: 50: /** 51: * The implementation of the {@link BindingIterator}. 52: * 53: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 54: */ 55: public class Binding_iterator_impl 56: extends _BindingIteratorImplBase implements SafeForDirectCalls 57: { 58: /** 59: * The value, returned by the {@link #next_one} when there 60: * are no bindings available. 61: */ 62: private static final Binding no_more_bindings = 63: new Binding(new NameComponent[ 0 ], BindingType.nobject); 64: 65: /** 66: * The collection of the available bindings. 67: */ 68: private final Binding[] bindings; 69: 70: /** 71: * The position of the internal iterator pointer. 72: */ 73: private int p; 74: 75: public Binding_iterator_impl(Binding[] a_bindings) 76: { 77: bindings = a_bindings; 78: } 79: 80: /** 81: * Disconnect the iterator from its ORB. The iterator will 82: * no longer be accessible and will be a subject of the 83: * garbage collection. 84: */ 85: public void destroy() 86: { 87: _orb().disconnect(this); 88: } 89: 90: /** 91: * Return the desired amount of bindings. 92: * 93: * @param amount the maximal number of bindings to return. 94: * @param a_list a holder to store the returned bindings. 95: * 96: * @return false if there are no more bindings available, 97: * true otherwise. 98: */ 99: public boolean next_n(int amount, BindingListHolder a_list) 100: { 101: if (p < bindings.length) 102: { 103: int n = bindings.length - p; 104: if (n > amount) 105: n = amount; 106: 107: a_list.value = new Binding[ n ]; 108: for (int i = 0; i < n; i++) 109: a_list.value [ i ] = bindings [ p++ ]; 110: 111: return true; 112: } 113: else 114: { 115: a_list.value = new Binding[ 0 ]; 116: return false; 117: } 118: } 119: 120: /** 121: * Return the next binding. 122: * 123: * @param a_binding a holder, where the next binding will be stored. 124: * 125: * @return false if there are no more bindings available, true 126: * otherwise. 127: */ 128: public boolean next_one(BindingHolder a_binding) 129: { 130: if (p < bindings.length) 131: { 132: a_binding.value = (Binding) bindings [ p++ ]; 133: return true; 134: } 135: else 136: { 137: a_binding.value = no_more_bindings; 138: return false; 139: } 140: } 141: }