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.codec.actions.searchRequest.filter; 021 022 023import org.apache.directory.api.asn1.DecoderException; 024import org.apache.directory.api.asn1.ber.grammar.GrammarAction; 025import org.apache.directory.api.asn1.ber.tlv.TLV; 026import org.apache.directory.api.ldap.codec.AttributeValueAssertion; 027import org.apache.directory.api.ldap.codec.api.LdapMessageContainer; 028import org.apache.directory.api.ldap.codec.decorators.SearchRequestDecorator; 029import org.apache.directory.api.ldap.codec.search.AttributeValueAssertionFilter; 030import org.apache.directory.api.ldap.model.entry.BinaryValue; 031import org.apache.directory.api.ldap.model.entry.StringValue; 032import org.apache.directory.api.ldap.model.entry.Value; 033import org.apache.directory.api.util.Strings; 034import org.slf4j.Logger; 035import org.slf4j.LoggerFactory; 036 037 038/** 039 * The action used to initialize the Assertion Value filter 040 * 041 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 042 */ 043public class InitAssertionValueFilter extends GrammarAction<LdapMessageContainer<SearchRequestDecorator>> 044{ 045 /** The logger */ 046 private static final Logger LOG = LoggerFactory.getLogger( InitAssertionValueFilter.class ); 047 048 /** Speedup for logs */ 049 private static final boolean IS_DEBUG = LOG.isDebugEnabled(); 050 051 052 /** 053 * Instantiates a new init assertion value filter action. 054 */ 055 public InitAssertionValueFilter() 056 { 057 super( "Initialize Assertion Value filter" ); 058 } 059 060 061 /** 062 * {@inheritDoc} 063 */ 064 public void action( LdapMessageContainer<SearchRequestDecorator> container ) throws DecoderException 065 { 066 SearchRequestDecorator searchRequestDecorator = container.getMessage(); 067 068 TLV tlv = container.getCurrentTLV(); 069 070 // The value can be null. 071 Value<?> assertionValue; 072 073 AttributeValueAssertionFilter terminalFilter = ( AttributeValueAssertionFilter ) 074 searchRequestDecorator.getTerminalFilter(); 075 AttributeValueAssertion assertion = terminalFilter.getAssertion(); 076 077 if ( container.isBinary( assertion.getAttributeDesc() ) ) 078 { 079 if ( tlv.getLength() != 0 ) 080 { 081 assertionValue = new BinaryValue( tlv.getValue().getData() ); 082 } 083 else 084 { 085 assertionValue = new BinaryValue( Strings.EMPTY_BYTES ); 086 } 087 088 assertion.setAssertionValue( assertionValue ); 089 } 090 else 091 { 092 if ( tlv.getLength() != 0 ) 093 { 094 assertionValue = new StringValue( Strings.utf8ToString( tlv.getValue().getData() ) ); 095 } 096 else 097 { 098 assertionValue = new StringValue( "" ); 099 } 100 101 assertion.setAssertionValue( assertionValue ); 102 } 103 104 // We now have to get back to the nearest filter which is 105 // not terminal. 106 searchRequestDecorator.unstackFilters( container ); 107 108 if ( IS_DEBUG ) 109 { 110 LOG.debug( "Initialize Assertion Value filter" ); 111 } 112 } 113}