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.model.schema.syntaxCheckers;
021
022
023import org.apache.directory.api.ldap.model.constants.SchemaConstants;
024import org.apache.directory.api.ldap.model.schema.SyntaxChecker;
025import org.apache.directory.api.util.Strings;
026import org.slf4j.Logger;
027import org.slf4j.LoggerFactory;
028
029
030/**
031 * A syntax checker which checks to see if an objectClass' type is either: 
032 * AUXILIARY, STRUCTURAL, or ABSTRACT.  The case is NOT ignored.
033 *
034 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
035 */
036@SuppressWarnings("serial")
037public class ObjectClassTypeSyntaxChecker extends SyntaxChecker
038{
039    /** A logger for this class */
040    private static final Logger LOG = LoggerFactory.getLogger( ObjectClassTypeSyntaxChecker.class );
041
042
043    /**
044     * Creates a new instance of ObjectClassTypeSyntaxChecker.
045     */
046    public ObjectClassTypeSyntaxChecker()
047    {
048        super( SchemaConstants.OBJECT_CLASS_TYPE_SYNTAX );
049    }
050
051
052    /**
053     * {@inheritDoc}
054     */
055    public boolean isValidSyntax( Object value )
056    {
057        String strValue = null;
058
059        if ( value == null )
060        {
061            LOG.debug( "Syntax invalid for 'null'" );
062            return false;
063        }
064
065        if ( value instanceof String )
066        {
067            strValue = ( String ) value;
068        }
069        else if ( value instanceof byte[] )
070        {
071            strValue = Strings.utf8ToString( ( byte[] ) value );
072        }
073        else
074        {
075            strValue = value.toString();
076        }
077
078        if ( strValue.length() < 8 || strValue.length() > 10 )
079        {
080            LOG.debug( "Syntax invalid for '{}'", value );
081            return false;
082        }
083
084        char ch = strValue.charAt( 0 );
085
086        switch ( ch )
087        {
088            case ( 'A' ):
089                if ( "AUXILIARY".equals( strValue ) || "ABSTRACT".equals( strValue ) )
090                {
091                    LOG.debug( "Syntax valid for '{}'", value );
092                    return true;
093                }
094
095                LOG.debug( "Syntax invalid for '{}'", value );
096                return false;
097
098            case ( 'S' ):
099                boolean result = "STRUCTURAL".equals( strValue );
100
101                if ( result )
102                {
103                    LOG.debug( "Syntax valid for '{}'", value );
104                }
105                else
106                {
107                    LOG.debug( "Syntax invalid for '{}'", value );
108                }
109
110                return result;
111
112            default:
113                LOG.debug( "Syntax invalid for '{}'", value );
114                return false;
115        }
116    }
117}