001/* 002 * Copyright 2010-2020 Ping Identity Corporation 003 * All Rights Reserved. 004 */ 005/* 006 * Copyright 2010-2020 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) 2010-2020 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.listener; 037 038 039 040import com.unboundid.ldap.protocol.SearchResultReferenceProtocolOp; 041import com.unboundid.ldap.sdk.Control; 042import com.unboundid.util.Extensible; 043import com.unboundid.util.ThreadSafety; 044import com.unboundid.util.ThreadSafetyLevel; 045import com.unboundid.util.ObjectPair; 046 047 048 049/** 050 * This interface may be implemented by a class which wishes to intercept and 051 * alter search result references in some way before they are returned to the 052 * client, and/or to prevent them from being returned altogether. Search 053 * reference transformers may be enabled or disabled by adding them to or 054 * removing them from an {@link LDAPListenerClientConnection}. 055 */ 056@Extensible() 057@ThreadSafety(level=ThreadSafetyLevel.INTERFACE_THREADSAFE) 058public interface SearchReferenceTransformer 059{ 060 /** 061 * Transforms the provided search result reference and/or set of controls to 062 * alter what will be returned to the client. 063 * 064 * @param messageID The message ID for the associated search operation. 065 * @param reference The search result reference to be processed. It will 066 * not be {@code null}. 067 * @param controls The set of controls to be processed. It will not be 068 * {@code null} but may be empty if there are no controls. 069 * 070 * @return An {@link ObjectPair} containing a possibly updated reference and 071 * set of controls, or {@code null} to indicate that the reference 072 * should not be returned to the client. 073 */ 074 ObjectPair<SearchResultReferenceProtocolOp,Control[]> transformReference( 075 int messageID, SearchResultReferenceProtocolOp reference, 076 Control[] controls); 077}