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.LdapMessageCodec;
029 import org.apache.directory.shared.ldap.codec.LdapMessageContainer;
030 import org.apache.directory.shared.ldap.codec.search.AttributeValueAssertionFilter;
031 import org.apache.directory.shared.ldap.codec.search.SearchRequestCodec;
032 import org.apache.directory.shared.ldap.entry.Value;
033 import org.apache.directory.shared.ldap.entry.client.ClientBinaryValue;
034 import org.apache.directory.shared.ldap.entry.client.ClientStringValue;
035 import org.apache.directory.shared.ldap.util.StringTools;
036
037 import org.slf4j.Logger;
038 import org.slf4j.LoggerFactory;
039
040
041 /**
042 * The action used to initialize the Assertion Value filter
043 *
044 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
045 * @version $Rev$, $Date$,
046 */
047 public class InitAssertionValueFilterAction extends GrammarAction
048 {
049 /** The logger */
050 private static final Logger log = LoggerFactory.getLogger( InitAssertionValueFilterAction.class );
051
052 /** Speedup for logs */
053 private static final boolean IS_DEBUG = log.isDebugEnabled();
054
055 public InitAssertionValueFilterAction()
056 {
057 super( "Initialize Assertion Value filter" );
058 }
059
060 /**
061 * The initialization action
062 */
063 public void action( IAsn1Container container ) throws DecoderException
064 {
065 LdapMessageContainer ldapMessageContainer = ( LdapMessageContainer ) container;
066 LdapMessageCodec ldapMessage = ldapMessageContainer.getLdapMessage();
067 SearchRequestCodec searchRequest = ldapMessage.getSearchRequest();
068
069 TLV tlv = ldapMessageContainer.getCurrentTLV();
070
071 // The value can be null.
072 Value<?> assertionValue = null;
073
074 if ( tlv.getLength() != 0 )
075 {
076 assertionValue = new ClientBinaryValue( tlv.getValue().getData() );
077 }
078 else
079 {
080 assertionValue = new ClientBinaryValue( StringTools.EMPTY_BYTES );
081 }
082
083 AttributeValueAssertionFilter terminalFilter = ( AttributeValueAssertionFilter ) searchRequest
084 .getTerminalFilter();
085 AttributeValueAssertion assertion = terminalFilter.getAssertion();
086
087 if ( ldapMessageContainer.isBinary( assertion.getAttributeDesc() ) )
088 {
089 if ( tlv.getLength() != 0 )
090 {
091 assertionValue = new ClientBinaryValue( tlv.getValue().getData() );
092 }
093 else
094 {
095 assertionValue = new ClientBinaryValue( StringTools.EMPTY_BYTES );
096 }
097
098 assertion.setAssertionValue( assertionValue );
099 }
100 else
101 {
102 if ( tlv.getLength() != 0 )
103 {
104 assertionValue = new ClientStringValue( StringTools.utf8ToString( tlv.getValue().getData() ) );
105 }
106 else
107 {
108 assertionValue = new ClientStringValue( "" );
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 searchRequest.unstackFilters( container );
117
118 if ( IS_DEBUG )
119 {
120 log.debug( "Initialize Assertion Value filter" );
121 }
122 }
123 }