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 * https://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.codec.actions.controls; 021 022 023import org.apache.directory.api.asn1.ber.grammar.GrammarAction; 024import org.apache.directory.api.asn1.ber.tlv.TLV; 025import org.apache.directory.api.i18n.I18n; 026import org.apache.directory.api.ldap.codec.api.LdapMessageContainer; 027import org.apache.directory.api.ldap.model.message.Message; 028import org.slf4j.Logger; 029import org.slf4j.LoggerFactory; 030 031 032/** 033 * The action used to initialise the controls. 034 * <pre> 035 * ... }, 036 * controls [0] Controls OPTIONAL } 037 * 038 * Controls ::= SEQUENCE OF control Control 039 040 * </pre> 041 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 042 */ 043public class InitControls extends GrammarAction<LdapMessageContainer<Message>> 044{ 045 /** The logger */ 046 private static final Logger LOG = LoggerFactory.getLogger( InitControls.class ); 047 048 /** 049 * Instantiates a new controls init action. 050 */ 051 public InitControls() 052 { 053 super( "Initialize a control" ); 054 } 055 056 057 /** 058 * {@inheritDoc} 059 */ 060 @Override 061 public void action( LdapMessageContainer<Message> container ) 062 { 063 TLV tlv = container.getCurrentTLV(); 064 int expectedLength = tlv.getLength(); 065 066 // The Length can be null 067 if ( expectedLength != 0 ) 068 { 069 if ( LOG.isDebugEnabled() ) 070 { 071 LOG.debug( I18n.msg( I18n.MSG_05100_NEW_LIST_CONTROLS_INITIALIZED ) ); 072 } 073 } 074 else 075 { 076 if ( LOG.isDebugEnabled() ) 077 { 078 LOG.debug( I18n.msg( I18n.MSG_05101_NEW_EMPTY_CONTROLS_INITIALIZED ) ); 079 } 080 } 081 082 // We can have an END transition 083 container.setGrammarEndAllowed( true ); 084 } 085}