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.util.StringTools;
033
034 import org.slf4j.Logger;
035 import org.slf4j.LoggerFactory;
036
037
038 /**
039 * The action used to initialize the AttributeDesc filter
040 *
041 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
042 * @version $Rev$, $Date$,
043 */
044 public class InitAttributeDescFilterAction extends GrammarAction
045 {
046 /** The logger */
047 private static final Logger log = LoggerFactory.getLogger( InitAttributeDescFilterAction.class );
048
049 /** Speedup for logs */
050 private static final boolean IS_DEBUG = log.isDebugEnabled();
051
052 public InitAttributeDescFilterAction()
053 {
054 super( "Initialize AttributeDesc filter" );
055 }
056
057 /**
058 * The initialization action
059 */
060 public void action( IAsn1Container container ) throws DecoderException
061 {
062 LdapMessageContainer ldapMessageContainer = ( LdapMessageContainer ) container;
063 LdapMessageCodec ldapMessage = ldapMessageContainer.getLdapMessage();
064 SearchRequestCodec searchRequest = ldapMessage.getSearchRequest();
065
066 TLV tlv = ldapMessageContainer.getCurrentTLV();
067
068 AttributeValueAssertion assertion = new AttributeValueAssertion();
069
070 if ( tlv.getLength() == 0 )
071 {
072 log.error( "The attribute description is empty " );
073 throw new DecoderException( "The type can't be null" );
074 }
075 else
076 {
077 String type = StringTools.utf8ToString( tlv.getValue().getData() );
078 assertion.setAttributeDesc( type );
079
080 AttributeValueAssertionFilter terminalFilter = ( AttributeValueAssertionFilter ) searchRequest
081 .getTerminalFilter();
082 terminalFilter.setAssertion( assertion );
083 }
084
085 if ( IS_DEBUG )
086 {
087 log.debug( "Initialize AttributeDesc filter" );
088 }
089 }
090 }