/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.directory.api.ldap.codec.controls.sort;
import org.apache.directory.api.asn1.DecoderException;
import org.apache.directory.api.asn1.ber.grammar.AbstractGrammar;
import org.apache.directory.api.asn1.ber.grammar.Grammar;
import org.apache.directory.api.asn1.ber.grammar.GrammarAction;
import org.apache.directory.api.asn1.ber.grammar.GrammarTransition;
import org.apache.directory.api.asn1.ber.tlv.BerValue;
import org.apache.directory.api.asn1.ber.tlv.UniversalTag;
import org.apache.directory.api.util.Strings;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Grammar for decoding SortResponseControl.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public class SortResponseGrammar extends AbstractGrammar<SortResponseContainer>
{
/** The logger */
static final Logger LOG = LoggerFactory.getLogger( SortRequestGrammar.class );
/** Speedup for logs */
static final boolean IS_DEBUG = LOG.isDebugEnabled();
/** The instance of grammar. SortResponseGrammar is a singleton */
private static Grammar<SortResponseContainer> instance = new SortResponseGrammar();
@SuppressWarnings("unchecked")
private SortResponseGrammar()
{
setName( SortResponseGrammar.class.getName() );
// Create the transitions table
super.transitions = new GrammarTransition[SortResponseStates.END_STATE.ordinal()][256];
super.transitions[SortResponseStates.START_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] =
new GrammarTransition<SortResponseContainer>( SortResponseStates.START_STATE,
SortResponseStates.SEQUENCE_STATE,
UniversalTag.SEQUENCE.getValue(), null );
super.transitions[SortResponseStates.SEQUENCE_STATE.ordinal()][UniversalTag.ENUMERATED.getValue()] =
new GrammarTransition<SortResponseContainer>( SortResponseStates.SEQUENCE_STATE,
SortResponseStates.RESULT_CODE_STATE,
UniversalTag.ENUMERATED.getValue(), new StoreSortResponseResultCode<SortResponseContainer>() );
super.transitions[SortResponseStates.RESULT_CODE_STATE.ordinal()][UniversalTag.OCTET_STRING.getValue()] =
new GrammarTransition<SortResponseContainer>( SortResponseStates.RESULT_CODE_STATE,
SortResponseStates.AT_DESC_STATE,
UniversalTag.OCTET_STRING.getValue(), new GrammarAction<SortResponseContainer>()
{
@Override
public void action( SortResponseContainer container ) throws DecoderException
{
BerValue value = container.getCurrentTLV().getValue();
String atType = Strings.utf8ToString( value.getData() );
if ( IS_DEBUG )
{
LOG.debug( "AttributeType = " + atType );
}
container.getControl().setAttributeName( atType );
container.setGrammarEndAllowed( true );
}
} );
}
/**
* This class is a singleton.
*
* @return An instance on this grammar
*/
public static Grammar<?> getInstance()
{
return instance;
}
}