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 */ 020 package org.apache.directory.shared.ldap.codec.actions; 021 022 023 import org.apache.directory.shared.asn1.ber.IAsn1Container; 024 import org.apache.directory.shared.asn1.ber.grammar.GrammarAction; 025 import org.apache.directory.shared.asn1.ber.tlv.TLV; 026 import org.apache.directory.shared.asn1.codec.DecoderException; 027 import org.apache.directory.shared.ldap.codec.LdapMessageContainer; 028 import org.apache.directory.shared.ldap.codec.search.PresentFilter; 029 import org.apache.directory.shared.ldap.codec.search.SearchRequestCodec; 030 import org.apache.directory.shared.ldap.util.StringTools; 031 import org.slf4j.Logger; 032 import org.slf4j.LoggerFactory; 033 034 035 /** 036 * The action used to initialize the Present filter 037 * 038 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 039 * @version $Rev$, $Date$, 040 */ 041 public class InitPresentFilterAction extends GrammarAction 042 { 043 /** The logger */ 044 private static final Logger log = LoggerFactory.getLogger( InitPresentFilterAction.class ); 045 046 /** Speedup for logs */ 047 private static final boolean IS_DEBUG = log.isDebugEnabled(); 048 049 public InitPresentFilterAction() 050 { 051 super( "Init present filter Value" ); 052 } 053 054 public void action( IAsn1Container container ) throws DecoderException 055 { 056 LdapMessageContainer ldapMessageContainer = ( LdapMessageContainer ) container; 057 SearchRequestCodec searchRequest = ldapMessageContainer.getSearchRequest(); 058 059 TLV tlv = ldapMessageContainer.getCurrentTLV(); 060 061 // We can allocate the Attribute Value Assertion 062 PresentFilter presentFilter = new PresentFilter( ldapMessageContainer.getTlvId() ); 063 064 // add the filter to the request filter 065 searchRequest.addCurrentFilter( presentFilter ); 066 searchRequest.setTerminalFilter( presentFilter ); 067 068 String value = StringTools.utf8ToString( tlv.getValue().getData() ); 069 070 if ( StringTools.isEmpty( value ) ) 071 { 072 presentFilter.setAttributeDescription( "" ); 073 } 074 else 075 { 076 // Store the value. 077 String type = StringTools.utf8ToString( tlv.getValue().getData() ); 078 presentFilter.setAttributeDescription( type ); 079 } 080 081 // We now have to get back to the nearest filter which is 082 // not terminal. 083 searchRequest.unstackFilters( container ); 084 085 if ( IS_DEBUG ) 086 { 087 log.debug( "Initialize Present filter" ); 088 } 089 } 090 }