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.ldap.codec.LdapMessageCodec;
027 import org.apache.directory.shared.ldap.codec.LdapMessageContainer;
028 import org.apache.directory.shared.ldap.codec.modify.ModifyRequestCodec;
029 import org.apache.directory.shared.ldap.util.StringTools;
030
031 import org.slf4j.Logger;
032 import org.slf4j.LoggerFactory;
033
034
035 /**
036 * The action used to store a Value to an modifyRequest
037 *
038 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
039 * @version $Rev$, $Date$,
040 */
041 public class ModifyAttributeValueAction extends GrammarAction
042 {
043 /** The logger */
044 private static final Logger log = LoggerFactory.getLogger( ModifyAttributeValueAction.class );
045
046 /** Speedup for logs */
047 private static final boolean IS_DEBUG = log.isDebugEnabled();
048
049 public ModifyAttributeValueAction()
050 {
051 super( "Stores AttributeValue" );
052 }
053
054 /**
055 * The initialization action
056 */
057 public void action( IAsn1Container container )
058 {
059 LdapMessageContainer ldapMessageContainer = ( LdapMessageContainer ) container;
060 LdapMessageCodec ldapMessage = ldapMessageContainer.getLdapMessage();
061 ModifyRequestCodec modifyRequest = ldapMessage.getModifyRequest();
062
063 TLV tlv = ldapMessageContainer.getCurrentTLV();
064
065 // Store the value. It can't be null
066 byte[] value = StringTools.EMPTY_BYTES;
067
068 if ( tlv.getLength() == 0 )
069 {
070 modifyRequest.addAttributeValue( "" );
071 }
072 else
073 {
074 value = tlv.getValue().getData();
075
076 if ( ldapMessageContainer.isBinary( modifyRequest.getCurrentAttributeType() ) )
077 {
078 modifyRequest.addAttributeValue( value );
079 }
080 else
081 {
082 modifyRequest.addAttributeValue( StringTools.utf8ToString( ( byte[] ) value ) );
083 }
084 }
085
086 // We can have an END transition
087 ldapMessageContainer.grammarEndAllowed( true );
088
089 if ( IS_DEBUG )
090 {
091 log.debug( "Value modified : {}", value );
092 }
093 }
094 }