001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020package org.apache.directory.api.ldap.extras.controls.changeNotifications_impl; 021 022 023import java.nio.ByteBuffer; 024 025import org.apache.directory.api.asn1.Asn1Object; 026import org.apache.directory.api.asn1.DecoderException; 027import org.apache.directory.api.asn1.EncoderException; 028import org.apache.directory.api.ldap.codec.api.ControlDecorator; 029import org.apache.directory.api.ldap.codec.api.LdapApiService; 030import org.apache.directory.api.ldap.extras.controls.changeNotifications.ChangeNotifications; 031 032 033/** 034 * A decorating wrapper for a ChangeNotifications Control. 035 * 036 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 037 */ 038public class ChangeNotificationsDecorator extends ControlDecorator<ChangeNotifications> implements ChangeNotifications 039{ 040 041 /** 042 * Default constructor 043 * 044 * @param codec The LDAP Service to use 045 * @param control The ChangeNotification control to decorate 046 */ 047 public ChangeNotificationsDecorator( LdapApiService codec, ChangeNotifications control ) 048 { 049 super( codec, control ); 050 } 051 052 053 /** 054 * Returns 0 every time. 055 */ 056 @Override 057 public int computeLength() 058 { 059 return 0; 060 } 061 062 063 /** 064 * {@inheritDoc} 065 */ 066 @Override 067 public Asn1Object decode( byte[] controlBytes ) throws DecoderException 068 { 069 return this; 070 } 071 072 073 /** 074 * {@inheritDoc} 075 */ 076 @Override 077 public ByteBuffer encode( ByteBuffer buffer ) throws EncoderException 078 { 079 return buffer; 080 } 081}