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The UnboundID LDAP SDK for Java is a fast, comprehensive, and easy-to-use Java API for communicating with LDAP directory servers and performing related tasks like reading and writing LDIF, encoding and decoding data using base64 and ASN.1 BER, and performing secure communication. This package contains the Standard Edition of the LDAP SDK, which is a complete, general-purpose library for communicating with LDAPv3 directory servers.

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/*
 * Copyright 2008-2018 Ping Identity Corporation
 * All Rights Reserved.
 */
/*
 * Copyright (C) 2008-2018 Ping Identity Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (GPLv2 only)
 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see .
 */
package com.unboundid.ldap.sdk.controls;



import com.unboundid.ldap.sdk.Control;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.ResultCode;
import com.unboundid.util.NotMutable;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;

import static com.unboundid.ldap.sdk.controls.ControlMessages.*;



/**
 * This class provides an implementation of the LDAP subentries request control
 * as defined in draft-ietf-ldup-subentry.  It may be included in a search
 * request to indicate that the entries with the {@code ldapSubentry} object
 * class should be included in the search results.
 * 


 * Entries containing the {@code ldapSubentry} object class are special in that
 * they are normally excluded from search results, unless the target entry is
 * requested with a base-level search.  They are used to store operational
 * information that controls how the server should behave rather than user data.
 * Because they do not hold user data, it is generally desirable to have them
 * excluded from search results, but for cases in which a client needs to
 * retrieve such an entry, then this subentries request control may be included
 * in the search request.
 * 


 * There is no corresponding response control.
 * 


 * Example
 * The following example illustrates the use of the subentries request control
 * to retrieve subentries that may not otherwise be returned.
 *  * // First, perform a search to retrieve an entry with a cn of "test subentry"
 * // but without including the subentries request control.  This should not
 * // return any matching entries.
 * SearchRequest searchRequest = new SearchRequest("dc=example,dc=com",
 *      SearchScope.SUB, Filter.createEqualityFilter("cn", "test subentry"));
 * SearchResult resultWithoutControl = connection.search(searchRequest);
 * LDAPTestUtils.assertResultCodeEquals(resultWithoutControl,
 *      ResultCode.SUCCESS);
 * LDAPTestUtils.assertEntriesReturnedEquals(resultWithoutControl, 0);
 *
 * // Update the search request to add a subentries request control so that
 * // subentries should be included in search results.  This should cause the
 * // subentry to be returned.
 * searchRequest.addControl(new SubentriesRequestControl());
 * SearchResult resultWithControl = connection.search(searchRequest);
 * LDAPTestUtils.assertResultCodeEquals(resultWithControl, ResultCode.SUCCESS);
 * LDAPTestUtils.assertEntriesReturnedEquals(resultWithControl, 1);
 * 
 */
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class SubentriesRequestControl
       extends Control
{
  /**
   * The OID (1.3.6.1.4.1.7628.5.101.1) for the LDAP subentries request control.
   */
  public static final String SUBENTRIES_REQUEST_OID =
       "1.3.6.1.4.1.7628.5.101.1";



  /**
   * The serial version UID for this serializable class.
   */
  private static final long serialVersionUID = 4772130172594841481L;



  /**
   * Creates a new subentries request control.  it will not be marked critical.
   */
  public SubentriesRequestControl()
  {
    this(false);
  }



  /**
   * Creates a new subentries request control with the specified criticality.
   *
   * @param  isCritical  Indicates whether this control should be marked
   *                     critical.
   */
  public SubentriesRequestControl(final boolean isCritical)
  {
    super(SUBENTRIES_REQUEST_OID, isCritical, null);
  }



  /**
   * Creates a new subentries request control which is decoded from the provided
   * generic control.
   *
   * @param  control  The generic control to be decoded as a subentries request
   *                  control.
   *
   * @throws  LDAPException  If the provided control cannot be decoded as a
   *                         subentries request control.
   */
  public SubentriesRequestControl(final Control control)
         throws LDAPException
  {
    super(control);

    if (control.hasValue())
    {
      throw new LDAPException(ResultCode.DECODING_ERROR,
                              ERR_SUBENTRIES_HAS_VALUE.get());
    }
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public String getControlName()
  {
    return INFO_CONTROL_NAME_SUBENTRIES_REQUEST.get();
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public void toString(final StringBuilder buffer)
  {
    buffer.append("SubentriesRequestControl(isCritical=");
    buffer.append(isCritical());
    buffer.append(')');
  }
}