1 /*
2 * Copyright 1999-2004 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package javax.naming;
27
28 import java.util.Hashtable;
29
30 /**
31 * This exception is thrown to indicate that the operation reached
32 * a point in the name where the operation cannot proceed any further.
33 * When performing an operation on a composite name, a naming service
34 * provider may reach a part of the name that does not belong to its
35 * namespace. At that point, it can construct a
36 * CannotProceedException and then invoke methods provided by
37 * javax.naming.spi.NamingManager (such as getContinuationContext())
38 * to locate another provider to continue the operation. If this is
39 * not possible, this exception is raised to the caller of the
40 * context operation.
41 *<p>
42 * If the program wants to handle this exception in particular, it
43 * should catch CannotProceedException explicitly before attempting to
44 * catch NamingException.
45 *<p>
46 * A CannotProceedException instance is not synchronized against concurrent
47 * multithreaded access. Multiple threads trying to access and modify
48 * CannotProceedException should lock the object.
49 *
50 * @author Rosanna Lee
51 * @author Scott Seligman
52 * @since 1.3
53 */
54
55 /*
56 * The serialized form of a CannotProceedException object consists of
57 * the serialized fields of its NamingException superclass, the remaining new
58 * name (a Name object), the environment (a Hashtable), the altName field
59 * (a Name object), and the serialized form of the altNameCtx field.
60 */
61
62
63 public class CannotProceedException extends NamingException {
64 /**
65 * Contains the remaining unresolved part of the second
66 * "name" argument to Context.rename().
67 * This information necessary for
68 * continuing the Context.rename() operation.
69 * <p>
70 * This field is initialized to null.
71 * It should not be manipulated directly: it should
72 * be accessed and updated using getRemainingName() and setRemainingName().
73 * @serial
74 *
75 * @see #getRemainingNewName
76 * @see #setRemainingNewName
77 */
78 protected Name remainingNewName = null;
79
80 /**
81 * Contains the environment
82 * relevant for the Context or DirContext method that cannot proceed.
83 * <p>
84 * This field is initialized to null.
85 * It should not be manipulated directly: it should be accessed
86 * and updated using getEnvironment() and setEnvironment().
87 * @serial
88 *
89 * @see #getEnvironment
90 * @see #setEnvironment
91 */
92 protected Hashtable<?,?> environment = null;
93
94 /**
95 * Contains the name of the resolved object, relative
96 * to the context <code>altNameCtx</code>. It is a composite name.
97 * If null, then no name is specified.
98 * See the <code>javax.naming.spi.ObjectFactory.getObjectInstance</code>
99 * method for details on how this is used.
100 * <p>
101 * This field is initialized to null.
102 * It should not be manipulated directly: it should
103 * be accessed and updated using getAltName() and setAltName().
104 * @serial
105 *
106 * @see #getAltName
107 * @see #setAltName
108 * @see #altNameCtx
109 * @see javax.naming.spi.ObjectFactory#getObjectInstance
110 */
111 protected Name altName = null;
112
113 /**
114 * Contains the context relative to which
115 * <code>altName</code> is specified. If null, then the default initial
116 * context is implied.
117 * See the <code>javax.naming.spi.ObjectFactory.getObjectInstance</code>
118 * method for details on how this is used.
119 * <p>
120 * This field is initialized to null.
121 * It should not be manipulated directly: it should
122 * be accessed and updated using getAltNameCtx() and setAltNameCtx().
123 * @serial
124 *
125 * @see #getAltNameCtx
126 * @see #setAltNameCtx
127 * @see #altName
128 * @see javax.naming.spi.ObjectFactory#getObjectInstance
129 */
130 protected Context altNameCtx = null;
131
132 /**
133 * Constructs a new instance of CannotProceedException using an
134 * explanation. All unspecified fields default to null.
135 *
136 * @param explanation A possibly null string containing additional
137 * detail about this exception.
138 * If null, this exception has no detail message.
139 * @see java.lang.Throwable#getMessage
140 */
141 public CannotProceedException(String explanation) {
142 super(explanation);
143 }
144
145 /**
146 * Constructs a new instance of CannotProceedException.
147 * All fields default to null.
148 */
149 public CannotProceedException() {
150 super();
151 }
152
153 /**
154 * Retrieves the environment that was in effect when this exception
155 * was created.
156 * @return Possibly null environment property set.
157 * null means no environment was recorded for this exception.
158 * @see #setEnvironment
159 */
160 public Hashtable<?,?> getEnvironment() {
161 return environment;
162 }
163
164 /**
165 * Sets the environment that will be returned when getEnvironment()
166 * is called.
167 * @param environment A possibly null environment property set.
168 * null means no environment is being recorded for
169 * this exception.
170 * @see #getEnvironment
171 */
172 public void setEnvironment(Hashtable<?,?> environment) {
173 this.environment = environment; // %%% clone it??
174 }
175
176 /**
177 * Retrieves the "remaining new name" field of this exception, which is
178 * used when this exception is thrown during a rename() operation.
179 *
180 * @return The possibly null part of the new name that has not been resolved.
181 * It is a composite name. It can be null, which means
182 * the remaining new name field has not been set.
183 *
184 * @see #setRemainingNewName
185 */
186 public Name getRemainingNewName() {
187 return remainingNewName;
188 }
189
190 /**
191 * Sets the "remaining new name" field of this exception.
192 * This is the value returned by <code>getRemainingNewName()</code>.
193 *<p>
194 * <tt>newName</tt> is a composite name. If the intent is to set
195 * this field using a compound name or string, you must
196 * "stringify" the compound name, and create a composite
197 * name with a single component using the string. You can then
198 * invoke this method using the resulting composite name.
199 *<p>
200 * A copy of <code>newName</code> is made and stored.
201 * Subsequent changes to <code>name</code> does not
202 * affect the copy in this NamingException and vice versa.
203 *
204 * @param newName The possibly null name to set the "remaining new name" to.
205 * If null, it sets the remaining name field to null.
206 *
207 * @see #getRemainingNewName
208 */
209 public void setRemainingNewName(Name newName) {
210 if (newName != null)
211 this.remainingNewName = (Name)(newName.clone());
212 else
213 this.remainingNewName = null;
214 }
215
216 /**
217 * Retrieves the <code>altName</code> field of this exception.
218 * This is the name of the resolved object, relative to the context
219 * <code>altNameCtx</code>. It will be used during a subsequent call to the
220 * <code>javax.naming.spi.ObjectFactory.getObjectInstance</code> method.
221 *
222 * @return The name of the resolved object, relative to
223 * <code>altNameCtx</code>.
224 * It is a composite name. If null, then no name is specified.
225 *
226 * @see #setAltName
227 * @see #getAltNameCtx
228 * @see javax.naming.spi.ObjectFactory#getObjectInstance
229 */
230 public Name getAltName() {
231 return altName;
232 }
233
234 /**
235 * Sets the <code>altName</code> field of this exception.
236 *
237 * @param altName The name of the resolved object, relative to
238 * <code>altNameCtx</code>.
239 * It is a composite name.
240 * If null, then no name is specified.
241 *
242 * @see #getAltName
243 * @see #setAltNameCtx
244 */
245 public void setAltName(Name altName) {
246 this.altName = altName;
247 }
248
249 /**
250 * Retrieves the <code>altNameCtx</code> field of this exception.
251 * This is the context relative to which <code>altName</code> is named.
252 * It will be used during a subsequent call to the
253 * <code>javax.naming.spi.ObjectFactory.getObjectInstance</code> method.
254 *
255 * @return The context relative to which <code>altName</code> is named.
256 * If null, then the default initial context is implied.
257 *
258 * @see #setAltNameCtx
259 * @see #getAltName
260 * @see javax.naming.spi.ObjectFactory#getObjectInstance
261 */
262 public Context getAltNameCtx() {
263 return altNameCtx;
264 }
265
266 /**
267 * Sets the <code>altNameCtx</code> field of this exception.
268 *
269 * @param altNameCtx
270 * The context relative to which <code>altName</code>
271 * is named. If null, then the default initial context
272 * is implied.
273 *
274 * @see #getAltNameCtx
275 * @see #setAltName
276 */
277 public void setAltNameCtx(Context altNameCtx) {
278 this.altNameCtx = altNameCtx;
279 }
280
281
282 /**
283 * Use serialVersionUID from JNDI 1.1.1 for interoperability
284 */
285 private static final long serialVersionUID = 1219724816191576813L;
286 }
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