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.codec.DecoderException;
026 import org.apache.directory.shared.ldap.codec.LdapConstants;
027 import org.apache.directory.shared.ldap.codec.LdapMessageContainer;
028 import org.apache.directory.shared.ldap.codec.search.AttributeValueAssertionFilter;
029 import org.apache.directory.shared.ldap.codec.search.Filter;
030 import org.apache.directory.shared.ldap.codec.search.SearchRequestCodec;
031 import org.slf4j.Logger;
032 import org.slf4j.LoggerFactory;
033
034
035 /**
036 * The action used to initialize the Approx Match filter
037 *
038 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
039 * @version $Rev$, $Date$,
040 */
041 public class InitApproxMatchFilterAction extends GrammarAction
042 {
043 /** The logger */
044 private static final Logger log = LoggerFactory.getLogger( InitApproxMatchFilterAction.class );
045
046 /** Speedup for logs */
047 private static final boolean IS_DEBUG = log.isDebugEnabled();
048
049 public InitApproxMatchFilterAction()
050 {
051 super( "Init Approx Match filter Value" );
052 }
053
054 public void action( IAsn1Container container ) throws DecoderException
055 {
056 LdapMessageContainer ldapMessageContainer = ( LdapMessageContainer ) container;
057 SearchRequestCodec searchRequest = ldapMessageContainer.getSearchRequest();
058
059 // We can allocate the Attribute Value Assertion
060 Filter filter = new AttributeValueAssertionFilter(
061 ldapMessageContainer.getTlvId(),
062 LdapConstants.APPROX_MATCH_FILTER );
063
064 searchRequest.addCurrentFilter( filter );
065
066 // Store the filter structure that still has to be
067 // fullfiled
068 searchRequest.setTerminalFilter( filter );
069
070 if ( IS_DEBUG )
071 {
072 log.debug( "Initialize Approx Match filter" );
073 }
074 }
075 }