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.AttributeValueAssertion;
028 import org.apache.directory.shared.ldap.codec.LdapMessageContainer;
029 import org.apache.directory.shared.ldap.codec.search.AttributeValueAssertionFilter;
030 import org.apache.directory.shared.ldap.codec.search.SearchRequestCodec;
031 import org.apache.directory.shared.ldap.entry.BinaryValue;
032 import org.apache.directory.shared.ldap.entry.StringValue;
033 import org.apache.directory.shared.ldap.entry.Value;
034 import org.apache.directory.shared.ldap.util.StringTools;
035 import org.slf4j.Logger;
036 import 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 * @version $Rev$, $Date$,
044 */
045 public class InitAssertionValueFilterAction extends GrammarAction
046 {
047 /** The logger */
048 private static final Logger log = LoggerFactory.getLogger( InitAssertionValueFilterAction.class );
049
050 /** Speedup for logs */
051 private static final boolean IS_DEBUG = log.isDebugEnabled();
052
053 public InitAssertionValueFilterAction()
054 {
055 super( "Initialize Assertion Value filter" );
056 }
057
058 /**
059 * The initialization action
060 */
061 public void action( IAsn1Container container ) throws DecoderException
062 {
063 LdapMessageContainer ldapMessageContainer = ( LdapMessageContainer ) container;
064 SearchRequestCodec searchRequest = ldapMessageContainer.getSearchRequest();
065
066 TLV tlv = ldapMessageContainer.getCurrentTLV();
067
068 // The value can be null.
069 Value<?> assertionValue = null;
070
071 if ( tlv.getLength() != 0 )
072 {
073 assertionValue = new BinaryValue( tlv.getValue().getData() );
074 }
075 else
076 {
077 assertionValue = new BinaryValue( StringTools.EMPTY_BYTES );
078 }
079
080 AttributeValueAssertionFilter terminalFilter = ( AttributeValueAssertionFilter ) searchRequest
081 .getTerminalFilter();
082 AttributeValueAssertion assertion = terminalFilter.getAssertion();
083
084 if ( ldapMessageContainer.isBinary( assertion.getAttributeDesc() ) )
085 {
086 if ( tlv.getLength() != 0 )
087 {
088 assertionValue = new BinaryValue( tlv.getValue().getData() );
089 }
090 else
091 {
092 assertionValue = new BinaryValue( StringTools.EMPTY_BYTES );
093 }
094
095 assertion.setAssertionValue( assertionValue );
096 }
097 else
098 {
099 if ( tlv.getLength() != 0 )
100 {
101 assertionValue = new StringValue( StringTools.utf8ToString( tlv.getValue().getData() ) );
102 }
103 else
104 {
105 assertionValue = new StringValue( "" );
106 }
107
108 assertion.setAssertionValue(assertionValue );
109 }
110
111 // We now have to get back to the nearest filter which is
112 // not terminal.
113 searchRequest.unstackFilters( container );
114
115 if ( IS_DEBUG )
116 {
117 log.debug( "Initialize Assertion Value filter" );
118 }
119 }
120 }