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1: /* ListBindingsEnumeration.java -- handles corbaname: 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.giop; 40: 41: import javax.naming.NamingEnumeration; 42: 43: import org.omg.CosNaming.Binding; 44: import org.omg.CosNaming.BindingIteratorHolder; 45: import org.omg.CosNaming.BindingListHolder; 46: import org.omg.CosNaming.NamingContext; 47: 48: /** 49: * Iterates over bindings, obtaining values first from the binding list and then 50: * from the binding iterator. 51: * 52: * @author Audrius Meskauskas 53: */ 54: public class ListBindingsEnumeration extends GiopNamingEnumeration implements 55: NamingEnumeration 56: { 57: /** 58: * The naming service, to resolve the objects. 59: */ 60: NamingContext service; 61: 62: /** 63: * Create the new enumeration 64: * 65: * @param bh 66: * holder, containing the first portion of the bindings 67: * @param bih 68: * the iterator, containing the remaining bindings 69: * @param batchSize 70: * the number of bindings the the iterator will be requested to 71: * return as a single pack 72: * @param aService 73: * the naming service, used to obtain the objects, bound to the 74: * names. 75: */ 76: public ListBindingsEnumeration(BindingListHolder bh, 77: BindingIteratorHolder bih, int batchSize, 78: NamingContext aService) 79: { 80: super(bh, bih, batchSize); 81: service = aService; 82: } 83: 84: /** 85: * Convert from the CORBA binding into the javax.naming binding. As the CORBA 86: * naming service binding does not contain the object itself, this method 87: * makes the additional calls to the naming service. 88: * 89: * @param binding 90: * the binding to convert 91: * @return the value, that must be returned by the {@link #next()}. 92: */ 93: public Object convert(Binding binding) 94: { 95: StringBuffer name = new StringBuffer(); 96: 97: for (int i = 0; i < binding.binding_name.length; i++) 98: { 99: name.append(binding.binding_name[i]); 100: if (i < binding.binding_name.length - 1) 101: name.append('/'); 102: } 103: 104: try 105: { 106: Object object = service.resolve(binding.binding_name); 107: return new javax.naming.Binding(name.toString(), object); 108: } 109: catch (Exception e) 110: { 111: // Probably was removed by the concurent thread. 112: return null; 113: } 114: } 115: 116: }