1 /* 2 * Copyright (c) 1999, 2004, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package javax.naming.spi; 27 28 import javax.naming.Name; 29 import javax.naming.Context; 30 import javax.naming.CompositeName; 31 import javax.naming.InvalidNameException; 32 33 /** 34 * This class represents the result of resolution of a name. 35 * It contains the object to which name was resolved, and the portion 36 * of the name that has not been resolved. 37 *<p> 38 * A ResolveResult instance is not synchronized against concurrent 39 * multithreaded access. Multiple threads trying to access and modify 40 * a single ResolveResult instance should lock the object. 41 * 42 * @author Rosanna Lee 43 * @author Scott Seligman 44 * @since 1.3 45 */ 46 public class ResolveResult implements java.io.Serializable { 47 /** 48 * Field containing the Object that was resolved to successfully. 49 * It can be null only when constructed using a subclass. 50 * Constructors should always initialize this. 51 * @serial 52 */ 53 protected Object resolvedObj; 54 /** 55 * Field containing the remaining name yet to be resolved. 56 * It can be null only when constructed using a subclass. 57 * Constructors should always initialize this. 58 * @serial 59 */ 60 protected Name remainingName; 61 62 /** 63 * Constructs an instance of ResolveResult with the 64 * resolved object and remaining name both initialized to null. 65 */ 66 protected ResolveResult() { 67 resolvedObj = null; 68 remainingName = null; 69 } 70 71 /** 72 * Constructs a new instance of ResolveResult consisting of 73 * the resolved object and the remaining unresolved component. 74 * 75 * @param robj The non-null object resolved to. 76 * @param rcomp The single remaining name component that has yet to be 77 * resolved. Cannot be null (but can be empty). 78 */ 79 public ResolveResult(Object robj, String rcomp) { 80 resolvedObj = robj; 81 try { 82 remainingName = new CompositeName(rcomp); 83 // remainingName.appendComponent(rcomp); 84 } catch (InvalidNameException e) { 85 // ignore; shouldn't happen 86 } 87 } 88 89 /** 90 * Constructs a new instance of ResolveResult consisting of 91 * the resolved Object and the remaining name. 92 * 93 * @param robj The non-null Object resolved to. 94 * @param rname The non-null remaining name that has yet to be resolved. 95 */ 96 public ResolveResult(Object robj, Name rname) { 97 resolvedObj = robj; 98 setRemainingName(rname); 99 } 100 101 /** 102 * Retrieves the remaining unresolved portion of the name. 103 * 104 * @return The remaining unresolved portion of the name. 105 * Cannot be null but empty OK. 106 * @see #appendRemainingName 107 * @see #appendRemainingComponent 108 * @see #setRemainingName 109 */ 110 public Name getRemainingName() { 111 return this.remainingName; 112 } 113 114 /** 115 * Retrieves the Object to which resolution was successful. 116 * 117 * @return The Object to which resolution was successful. Cannot be null. 118 * @see #setResolvedObj 119 */ 120 public Object getResolvedObj() { 121 return this.resolvedObj; 122 } 123 124 /** 125 * Sets the remaining name field of this result to name. 126 * A copy of name is made so that modifying the copy within 127 * this ResolveResult does not affect <code>name</code> and 128 * vice versa. 129 * 130 * @param name The name to set remaining name to. Cannot be null. 131 * @see #getRemainingName 132 * @see #appendRemainingName 133 * @see #appendRemainingComponent 134 */ 135 public void setRemainingName(Name name) { 136 if (name != null) 137 this.remainingName = (Name)(name.clone()); 138 else { 139 // ??? should throw illegal argument exception 140 this.remainingName = null; 141 } 142 } 143 144 /** 145 * Adds components to the end of remaining name. 146 * 147 * @param name The components to add. Can be null. 148 * @see #getRemainingName 149 * @see #setRemainingName 150 * @see #appendRemainingComponent 151 */ 152 public void appendRemainingName(Name name) { 153 // System.out.println("appendingRemainingName: " + name.toString()); 154 // Exception e = new Exception(); 155 // e.printStackTrace(); 156 if (name != null) { 157 if (this.remainingName != null) { 158 try { 159 this.remainingName.addAll(name); 160 } catch (InvalidNameException e) { 161 // ignore; shouldn't happen for composite name 162 } 163 } else { 164 this.remainingName = (Name)(name.clone()); 165 } 166 } 167 } 168 169 /** 170 * Adds a single component to the end of remaining name. 171 * 172 * @param name The component to add. Can be null. 173 * @see #getRemainingName 174 * @see #appendRemainingName 175 */ 176 public void appendRemainingComponent(String name) { 177 if (name != null) { 178 CompositeName rname = new CompositeName(); 179 try { 180 rname.add(name); 181 } catch (InvalidNameException e) { 182 // ignore; shouldn't happen for empty composite name 183 } 184 appendRemainingName(rname); 185 } 186 } 187 188 /** 189 * Sets the resolved Object field of this result to obj. 190 * 191 * @param obj The object to use for setting the resolved obj field. 192 * Cannot be null. 193 * @see #getResolvedObj 194 */ 195 public void setResolvedObj(Object obj) { 196 this.resolvedObj = obj; 197 // ??? should check for null? 198 } 199 200 private static final long serialVersionUID = -4552108072002407559L; 201 }