/* * Copyright (c) 1999, 2002, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.jndi.ldap; import java.io.IOException; /** * This class implements the LDAPv3 Request Control for the persistent search * mechanism as defined in * draft-ietf-ldapext-psearch-02.txt. * * The control's value has the following ASN.1 definition: *
 *
 *     PersistentSearch ::= SEQUENCE {
 *         changeTypes INTEGER,
 *         changesOnly BOOLEAN,
 *         returnECs BOOLEAN
 *     }
 *
 * 
* * @see EntryChangeResponseControl * @author Vincent Ryan */ final public class PersistentSearchControl extends BasicControl { /** * The persistent search control's assigned object identifier * is 2.16.840.1.113730.3.4.3. */ public static final String OID = "2.16.840.1.113730.3.4.3"; /** * Indicates interest in entries which have been added. */ public static final int ADD = 1; /** * Indicates interest in entries which have been deleted. */ public static final int DELETE = 2; /** * Indicates interest in entries which have been modified. */ public static final int MODIFY = 4; /** * Indicates interest in entries which have been renamed. */ public static final int RENAME = 8; /** * Indicates interest in entries which have been added, deleted, * modified or renamed. */ public static final int ANY = ADD | DELETE | MODIFY | RENAME; /** * The change types of interest. All changes, by default. * * @serial */ private int changeTypes = ANY; /** * Return original entries and changed entries or only changed entries. * * @serial */ private boolean changesOnly = false; /** * Return entry change controls. * * @serial */ private boolean returnControls = true; private static final long serialVersionUID = 6335140491154854116L; /** * Constructs a persistent search non-critical control. * The original entries, any changed entries (additions, * deletions, modifications or renames) and entry change * controls are requested. * * @exception IOException If a BER encoding error occurs. */ public PersistentSearchControl() throws IOException { super(OID); super.value = setEncodedValue(); } /** * Constructs a persistent search control. * * @param changeTypes The change types of interest. * @param changesOnly Return original entries and changed entries * or only the changed entries. * @param returnControls Return entry change controls. * @param criticality The control's criticality. * @exception IOException If a BER encoding error occurs. */ public PersistentSearchControl(int changeTypes, boolean changesOnly, boolean returnControls, boolean criticality) throws IOException { super(OID, criticality, null); this.changeTypes = changeTypes; this.changesOnly = changesOnly; this.returnControls = returnControls; super.value = setEncodedValue(); } /* * Sets the ASN.1 BER encoded value of the persistent search control. * The result is the raw BER bytes including the tag and length of * the control's value. It does not include the controls OID or criticality. * * @return A possibly null byte array representing the ASN.1 BER encoded * value of the LDAP persistent search control. * @exception IOException If a BER encoding error occurs. */ private byte[] setEncodedValue() throws IOException { // build the ASN.1 encoding BerEncoder ber = new BerEncoder(32); ber.beginSeq(Ber.ASN_SEQUENCE | Ber.ASN_CONSTRUCTOR); ber.encodeInt(changeTypes); ber.encodeBoolean(changesOnly); ber.encodeBoolean(returnControls); ber.endSeq(); return ber.getTrimmedBuf(); } }