| /* |
| * 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 |
| * |
| * https://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.search.subentries; |
| |
| |
| 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.TLV; |
| import org.apache.directory.api.asn1.ber.tlv.UniversalTag; |
| import org.apache.directory.api.i18n.I18n; |
| import org.apache.directory.api.util.Strings; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * This class implements the SubEntryControl. All the actions are declared in |
| * this class. As it is a singleton, these declaration are only done once. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public final class SubentriesGrammar extends AbstractGrammar<SubentriesContainer> |
| { |
| /** The logger */ |
| static final Logger LOG = LoggerFactory.getLogger( SubentriesGrammar.class ); |
| |
| /** The instance of grammar. SubEntryControlGrammar is a singleton */ |
| private static Grammar<SubentriesContainer> instance = new SubentriesGrammar(); |
| |
| |
| /** |
| * Creates a new SubEntryGrammar object. |
| */ |
| @SuppressWarnings("unchecked") |
| private SubentriesGrammar() |
| { |
| setName( SubentriesGrammar.class.getName() ); |
| |
| // Create the transitions table |
| super.transitions = new GrammarTransition[SubentriesStates.LAST_SUB_ENTRY_STATE.ordinal()][256]; |
| |
| super.transitions[SubentriesStates.START_STATE.ordinal()][UniversalTag.BOOLEAN.getValue()] = |
| new GrammarTransition<SubentriesContainer>( SubentriesStates.START_STATE, |
| SubentriesStates.SUB_ENTRY_VISIBILITY_STATE, UniversalTag.BOOLEAN.getValue(), |
| new GrammarAction<SubentriesContainer>( "SubEntryControl visibility" ) |
| { |
| public void action( SubentriesContainer container ) throws DecoderException |
| { |
| TLV tlv = container.getCurrentTLV(); |
| |
| // We get the value. If it's a 0, it's a FALSE. If it's |
| // a FF, it's a TRUE. Any other value should be an error, |
| // but we could relax this constraint. So if we have |
| // something |
| // which is not 0, it will be interpreted as TRUE, but we |
| // will generate a warning. |
| BerValue value = tlv.getValue(); |
| |
| try |
| { |
| container.getSubentriesControl().setVisibility( BooleanDecoder.parse( value ) ); |
| |
| // We can have an END transition |
| container.setGrammarEndAllowed( true ); |
| } |
| catch ( BooleanDecoderException bde ) |
| { |
| LOG.error( I18n.err( I18n.ERR_05310_INVALID_VISIBILITY_FLAG, Strings.dumpBytes( value.getData() ), bde.getMessage() ) ); |
| |
| // This will generate a PROTOCOL_ERROR |
| throw new DecoderException( bde.getMessage() ); |
| } |
| } |
| } ); |
| } |
| |
| |
| /** |
| * This class is a singleton. |
| * |
| * @return An instance on this grammar |
| */ |
| public static Grammar<SubentriesContainer> getInstance() |
| { |
| return instance; |
| } |
| } |