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 */
020package org.apache.directory.api.ldap.codec.actions.searchRequest.filter;
021
022
023import org.apache.directory.api.asn1.DecoderException;
024import org.apache.directory.api.asn1.ber.grammar.GrammarAction;
025import org.apache.directory.api.asn1.ber.tlv.TLV;
026import org.apache.directory.api.i18n.I18n;
027import org.apache.directory.api.ldap.codec.AttributeValueAssertion;
028import org.apache.directory.api.ldap.codec.api.LdapMessageContainer;
029import org.apache.directory.api.ldap.codec.decorators.SearchRequestDecorator;
030import org.apache.directory.api.ldap.codec.search.AttributeValueAssertionFilter;
031import org.apache.directory.api.util.Strings;
032import org.slf4j.Logger;
033import org.slf4j.LoggerFactory;
034
035
036/**
037 * The action used to initialize the AttributeDesc filter
038 * 
039 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
040 */
041public class InitAttributeDescFilter extends GrammarAction<LdapMessageContainer<SearchRequestDecorator>>
042{
043    /** The logger */
044    private static final Logger LOG = LoggerFactory.getLogger( InitAttributeDescFilter.class );
045
046    /** Speedup for logs */
047    private static final boolean IS_DEBUG = LOG.isDebugEnabled();
048
049
050    /**
051     * Instantiates a new init attribute desc filter action.
052     */
053    public InitAttributeDescFilter()
054    {
055        super( "Initialize AttributeDesc filter" );
056    }
057
058
059    /**
060     * {@inheritDoc}
061     */
062    public void action( LdapMessageContainer<SearchRequestDecorator> container ) throws DecoderException
063    {
064        SearchRequestDecorator searchRequestDecorator = container.getMessage();
065
066        TLV tlv = container.getCurrentTLV();
067
068        AttributeValueAssertion assertion = new AttributeValueAssertion();
069
070        if ( tlv.getLength() == 0 )
071        {
072            String msg = I18n.err( I18n.ERR_04007 );
073            LOG.error( msg );
074            throw new DecoderException( msg );
075        }
076        else
077        {
078            String type = Strings.utf8ToString( tlv.getValue().getData() );
079            assertion.setAttributeDesc( type );
080
081            AttributeValueAssertionFilter terminalFilter = ( AttributeValueAssertionFilter )
082                searchRequestDecorator.getTerminalFilter();
083            terminalFilter.setAssertion( assertion );
084        }
085
086        if ( IS_DEBUG )
087        {
088            LOG.debug( "Initialize AttributeDesc filter" );
089        }
090    }
091}