001/*
002 * Copyright 2007-2023 Ping Identity Corporation
003 * All Rights Reserved.
004 */
005/*
006 * Copyright 2007-2023 Ping Identity Corporation
007 *
008 * Licensed under the Apache License, Version 2.0 (the "License");
009 * you may not use this file except in compliance with the License.
010 * You may obtain a copy of the License at
011 *
012 *    http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing, software
015 * distributed under the License is distributed on an "AS IS" BASIS,
016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017 * See the License for the specific language governing permissions and
018 * limitations under the License.
019 */
020/*
021 * Copyright (C) 2007-2023 Ping Identity Corporation
022 *
023 * This program is free software; you can redistribute it and/or modify
024 * it under the terms of the GNU General Public License (GPLv2 only)
025 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
026 * as published by the Free Software Foundation.
027 *
028 * This program is distributed in the hope that it will be useful,
029 * but WITHOUT ANY WARRANTY; without even the implied warranty of
030 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
031 * GNU General Public License for more details.
032 *
033 * You should have received a copy of the GNU General Public License
034 * along with this program; if not, see <http://www.gnu.org/licenses>.
035 */
036package com.unboundid.ldap.sdk.experimental;
037
038
039
040import com.unboundid.ldap.sdk.Control;
041import com.unboundid.ldap.sdk.LDAPException;
042import com.unboundid.ldap.sdk.ResultCode;
043import com.unboundid.util.NotMutable;
044import com.unboundid.util.NotNull;
045import com.unboundid.util.ThreadSafety;
046import com.unboundid.util.ThreadSafetyLevel;
047
048import static com.unboundid.ldap.sdk.experimental.ExperimentalMessages.*;
049
050
051
052/**
053 * This class provides an implementation of the LDAP no-op control as defined in
054 * draft-zeilenga-ldap-noop-12.  This control may be included in an add, delete,
055 * modify, or modify DN request to indicate that the server should validate the
056 * request but not actually make any changes to the data.  It allows the client
057 * to verify that the operation would likely succeed (including schema
058 * validation, access control checks, and other processing) without making any
059 * changes to the server data.
060 * <BR><BR>
061 * Note that an operation which includes the no-op control will never have a
062 * {@link ResultCode#SUCCESS} result.  Instead, if the operation would likely
063 * have completed successfully if the no-op control had not been included, then
064 * the server will include a response with the {@link ResultCode#NO_OPERATION}
065 * result.  If the operation would not have been successful, then the result
066 * code in the response will be the appropriate result code for that failure.
067 * Note that if the response from the server includes the
068 * {@link ResultCode#NO_OPERATION} result, then the LDAP SDK will not throw an
069 * exception but will instead return the response in an
070 * {@link com.unboundid.ldap.sdk.LDAPResult} object.  There is no corresponding
071 * response control.
072 * <BR><BR>
073 * Note that at the time this control was written, the latest version of the
074 * specification may be found in draft-zeilenga-ldap-noop-11.  This version of
075 * the document does not explicitly specify either the OID that should be used
076 * for the control, or the result code that should be used for the associated
077 * operation if all other processing is completed successfully but no changes
078 * are made as a result of this control.  Until such time as these are defined,
079 * this implementation uses the OID temporarily assigned for its use by the
080 * OpenLDAP Foundation, which is used by at least the OpenLDAP, OpenDS, and the
081 * Ping Identity, UnboundID, and Nokia/Alcatel-Lucent 8661 Directory Server
082 * implementations.
083 * <BR><BR>
084 * <H2>Example</H2>
085 * The following example demonstrates the process for attempting to perform a
086 * modify operation including the LDAP no-op control so that the change is not
087 * actually applied:
088 * <PRE>
089 * ModifyRequest modifyRequest = new ModifyRequest("dc=example,dc=com",
090 *      new Modification(ModificationType.REPLACE, "description",
091 *           "new value"));
092 * modifyRequest.addControl(new DraftZeilengaLDAPNoOp12RequestControl());
093 *
094 * try
095 * {
096 *   LDAPResult result = connection.modify(modifyRequest);
097 *   if (result.getResultCode() == ResultCode.NO_OPERATION)
098 *   {
099 *     // The modification would likely have succeeded if the no-op control
100 *     // hadn't been included in the request.
101 *   }
102 *   else
103 *   {
104 *     // The modification would likely have failed if the no-op control
105 *     // hadn't been included in the request.
106 *   }
107 * }
108 * catch (LDAPException le)
109 * {
110 *   // The modification failed even with the no-op control in the request.
111 * }
112 * </PRE>
113 */
114@NotMutable()
115@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
116public final class DraftZeilengaLDAPNoOp12RequestControl
117       extends Control
118{
119  /**
120   * The OID (1.3.6.1.4.1.4203.1.10.2) for the LDAP no-op request control.
121   */
122  @NotNull public static final String NO_OP_REQUEST_OID =
123       "1.3.6.1.4.1.4203.1.10.2";
124
125
126
127  /**
128   * The serial version UID for this serializable class.
129   */
130  private static final long serialVersionUID = -7435407787971958294L;
131
132
133
134  /**
135   * Creates a new no-op request control.  It will be marked critical, as
136   * required by the control specification.
137   */
138  public DraftZeilengaLDAPNoOp12RequestControl()
139  {
140    super(NO_OP_REQUEST_OID, true, null);
141  }
142
143
144
145  /**
146   * Creates a new no-op request control which is decoded from the provided
147   * generic control.
148   *
149   * @param  control  The generic control to be decoded as a no-op request
150   *                  control.
151   *
152   * @throws  LDAPException  If the provided control cannot be decoded as a
153   *                         no-op request control.
154   */
155  public DraftZeilengaLDAPNoOp12RequestControl(@NotNull final Control control)
156         throws LDAPException
157  {
158    super(control);
159
160    if (control.hasValue())
161    {
162      throw new LDAPException(ResultCode.DECODING_ERROR,
163                              ERR_NOOP_REQUEST_HAS_VALUE.get());
164    }
165  }
166
167
168
169  /**
170   * {@inheritDoc}
171   */
172  @Override()
173  @NotNull()
174  public String getControlName()
175  {
176    return INFO_CONTROL_NAME_NOOP_REQUEST.get();
177  }
178
179
180
181  /**
182   * {@inheritDoc}
183   */
184  @Override()
185  public void toString(@NotNull final StringBuilder buffer)
186  {
187    buffer.append("NoOpRequestControl(isCritical=");
188    buffer.append(isCritical());
189    buffer.append(')');
190  }
191}