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.StringConstants; 034import org.apache.directory.api.util.Strings; 035import org.slf4j.Logger; 036import org.slf4j.LoggerFactory; 037 038 039/** 040 * The action used to initialize the Assertion Value filter 041 * 042 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 043 */ 044public class InitAssertionValueFilter extends GrammarAction<LdapMessageContainer<SearchRequestDecorator>> 045{ 046 /** The logger */ 047 private static final Logger LOG = LoggerFactory.getLogger( InitAssertionValueFilter.class ); 048 049 /** Speedup for logs */ 050 private static final boolean IS_DEBUG = LOG.isDebugEnabled(); 051 052 053 /** 054 * Instantiates a new init assertion value filter action. 055 */ 056 public InitAssertionValueFilter() 057 { 058 super( "Initialize Assertion Value filter" ); 059 } 060 061 062 /** 063 * {@inheritDoc} 064 */ 065 public void action( LdapMessageContainer<SearchRequestDecorator> container ) throws DecoderException 066 { 067 SearchRequestDecorator searchRequestDecorator = container.getMessage(); 068 069 TLV tlv = container.getCurrentTLV(); 070 071 // The value can be null. 072 Value<?> assertionValue = null; 073 074 if ( tlv.getLength() != 0 ) 075 { 076 assertionValue = new BinaryValue( tlv.getValue().getData() ); 077 } 078 else 079 { 080 assertionValue = new BinaryValue( StringConstants.EMPTY_BYTES ); 081 } 082 083 AttributeValueAssertionFilter terminalFilter = ( AttributeValueAssertionFilter ) 084 searchRequestDecorator.getTerminalFilter(); 085 AttributeValueAssertion assertion = terminalFilter.getAssertion(); 086 087 if ( container.isBinary( assertion.getAttributeDesc() ) ) 088 { 089 if ( tlv.getLength() != 0 ) 090 { 091 assertionValue = new BinaryValue( tlv.getValue().getData() ); 092 } 093 else 094 { 095 assertionValue = new BinaryValue( StringConstants.EMPTY_BYTES ); 096 } 097 098 assertion.setAssertionValue( assertionValue ); 099 } 100 else 101 { 102 if ( tlv.getLength() != 0 ) 103 { 104 assertionValue = new StringValue( Strings.utf8ToString( tlv.getValue().getData() ) ); 105 } 106 else 107 { 108 assertionValue = new StringValue( "" ); 109 } 110 111 assertion.setAssertionValue( assertionValue ); 112 } 113 114 // We now have to get back to the nearest filter which is 115 // not terminal. 116 searchRequestDecorator.unstackFilters( container ); 117 118 if ( IS_DEBUG ) 119 { 120 LOG.debug( "Initialize Assertion Value filter" ); 121 } 122 } 123}