| /* |
| * 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 static org.apache.directory.api.ldap.codec.controls.sort.SortRequestDecorator.ORDERING_RULE_TAG; |
| import static org.apache.directory.api.ldap.codec.controls.sort.SortRequestDecorator.REVERSE_ORDER_TAG; |
| |
| 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.BooleanDecoder; |
| import org.apache.directory.api.asn1.ber.tlv.BooleanDecoderException; |
| import org.apache.directory.api.asn1.ber.tlv.UniversalTag; |
| import org.apache.directory.api.ldap.model.message.controls.SortKey; |
| import org.apache.directory.api.util.Strings; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * Grammar used for decoding a SortRequestControl. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public final class SortRequestGrammar extends AbstractGrammar<SortRequestContainer> |
| { |
| /** The logger */ |
| static final Logger LOG = LoggerFactory.getLogger( SortRequestGrammar.class ); |
| |
| /** Speedup for logs */ |
| static final boolean IS_DEBUG = LOG.isDebugEnabled(); |
| |
| /** The instance of grammar. SortRequestGrammar is a singleton */ |
| private static Grammar<SortRequestContainer> instance = new SortRequestGrammar(); |
| |
| |
| @SuppressWarnings("unchecked") |
| private SortRequestGrammar() |
| { |
| setName( SortRequestGrammar.class.getName() ); |
| |
| GrammarAction<SortRequestContainer> addSortKey = new GrammarAction<SortRequestContainer>() |
| { |
| |
| @Override |
| public void action( SortRequestContainer container ) throws DecoderException |
| { |
| BerValue value = container.getCurrentTLV().getValue(); |
| |
| String atDesc = Strings.utf8ToString( value.getData() ); |
| if ( IS_DEBUG ) |
| { |
| LOG.debug( "AttributeTypeDesc = " + atDesc ); |
| } |
| |
| SortKey sk = new SortKey( atDesc ); |
| container.setCurrentKey( sk ); |
| container.getControl().addSortKey( sk ); |
| container.setGrammarEndAllowed( true ); |
| } |
| |
| }; |
| |
| GrammarAction<SortRequestContainer> storeReverseOrder = new GrammarAction<SortRequestContainer>() |
| { |
| |
| @Override |
| public void action( SortRequestContainer container ) throws DecoderException |
| { |
| BerValue value = container.getCurrentTLV().getValue(); |
| |
| try |
| { |
| boolean reverseOrder = BooleanDecoder.parse( value ); |
| |
| if ( IS_DEBUG ) |
| { |
| LOG.debug( "ReverseOrder = " + reverseOrder ); |
| } |
| |
| container.getCurrentKey().setReverseOrder( reverseOrder ); |
| |
| container.setGrammarEndAllowed( true ); |
| } |
| catch ( BooleanDecoderException bde ) |
| { |
| //String msg = I18n.err( I18n.ERR_04050 ); |
| //LOG.error( msg, e ); |
| throw new DecoderException( bde.getMessage(), bde ); |
| } |
| } |
| |
| }; |
| |
| // Create the transitions table |
| super.transitions = new GrammarTransition[SortRequestStates.END_STATE.ordinal()][256]; |
| |
| super.transitions[SortRequestStates.START_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = |
| new GrammarTransition<SortRequestContainer>( SortRequestStates.START_STATE, |
| SortRequestStates.SEQUENCE_OF_SEQUENCE_STATE, |
| UniversalTag.SEQUENCE.getValue(), null ); |
| |
| super.transitions[SortRequestStates.SEQUENCE_OF_SEQUENCE_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = |
| new GrammarTransition<SortRequestContainer>( SortRequestStates.SEQUENCE_OF_SEQUENCE_STATE, |
| SortRequestStates.SORT_KEY_SEQUENCE_STATE, |
| UniversalTag.SEQUENCE.getValue(), null ); |
| |
| super.transitions[SortRequestStates.SORT_KEY_SEQUENCE_STATE.ordinal()][UniversalTag.OCTET_STRING.getValue()] = |
| new GrammarTransition<SortRequestContainer>( SortRequestStates.SORT_KEY_SEQUENCE_STATE, |
| SortRequestStates.AT_DESC_STATE, |
| UniversalTag.OCTET_STRING.getValue(), addSortKey ); |
| |
| super.transitions[SortRequestStates.AT_DESC_STATE.ordinal()][ORDERING_RULE_TAG] = |
| new GrammarTransition<SortRequestContainer>( SortRequestStates.AT_DESC_STATE, |
| SortRequestStates.ORDER_RULE_STATE, |
| ORDERING_RULE_TAG, new GrammarAction<SortRequestContainer>() |
| { |
| |
| @Override |
| public void action( SortRequestContainer container ) throws DecoderException |
| { |
| BerValue value = container.getCurrentTLV().getValue(); |
| |
| String matchingRuleOid = Strings.utf8ToString( value.getData() ); |
| |
| if ( IS_DEBUG ) |
| { |
| LOG.debug( "MatchingRuleOid = " + matchingRuleOid ); |
| } |
| |
| container.getCurrentKey().setMatchingRuleId( matchingRuleOid ); |
| container.setGrammarEndAllowed( true ); |
| } |
| |
| } ); |
| |
| super.transitions[SortRequestStates.ORDER_RULE_STATE.ordinal()][REVERSE_ORDER_TAG] = |
| new GrammarTransition<SortRequestContainer>( SortRequestStates.ORDER_RULE_STATE, |
| SortRequestStates.REVERSE_ORDER_STATE, |
| REVERSE_ORDER_TAG, storeReverseOrder ); |
| |
| super.transitions[SortRequestStates.AT_DESC_STATE.ordinal()][REVERSE_ORDER_TAG] = |
| new GrammarTransition<SortRequestContainer>( SortRequestStates.AT_DESC_STATE, |
| SortRequestStates.REVERSE_ORDER_STATE, |
| REVERSE_ORDER_TAG, storeReverseOrder ); |
| |
| super.transitions[SortRequestStates.REVERSE_ORDER_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = |
| new GrammarTransition<SortRequestContainer>( SortRequestStates.REVERSE_ORDER_STATE, |
| SortRequestStates.SORT_KEY_SEQUENCE_STATE, |
| UniversalTag.SEQUENCE.getValue(), null ); |
| |
| super.transitions[SortRequestStates.AT_DESC_STATE.ordinal()][UniversalTag.SEQUENCE.getValue()] = |
| new GrammarTransition<SortRequestContainer>( SortRequestStates.AT_DESC_STATE, |
| SortRequestStates.SORT_KEY_SEQUENCE_STATE, |
| UniversalTag.SEQUENCE.getValue(), null ); |
| |
| } |
| |
| |
| /** |
| * This class is a singleton. |
| * |
| * @return An instance on this grammar |
| */ |
| public static Grammar<?> getInstance() |
| { |
| return instance; |
| } |
| } |