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.shared.ldap.model.schema.syntaxCheckers;
021
022
023import org.apache.directory.shared.ldap.model.constants.SchemaConstants;
024import org.apache.directory.shared.ldap.model.schema.SyntaxChecker;
025import org.apache.directory.shared.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     * Creates a new instance of ObjectClassTypeSyntaxChecker.
044     */
045    public ObjectClassTypeSyntaxChecker()
046    {
047        super( SchemaConstants.OBJECT_CLASS_TYPE_SYNTAX );
048    }
049
050    
051    /**
052     * {@inheritDoc}
053     */
054    public boolean isValidSyntax( Object value )
055    {
056        String strValue = null;
057
058        if ( value == null )
059        {
060            LOG.debug( "Syntax invalid for 'null'" );
061            return false;
062        }
063        
064        if ( value instanceof String )
065        {
066            strValue = ( String ) value;
067        }
068        else if ( value instanceof byte[] )
069        {
070            strValue = Strings.utf8ToString((byte[]) value);
071        }
072        else
073        {
074            strValue = value.toString();
075        }
076
077        if ( strValue.length() < 8 || strValue.length() > 10 )
078        {
079            LOG.debug( "Syntax invalid for '{}'", value );
080            return false;
081        }
082        
083        char ch = strValue.charAt( 0 );
084
085        switch( ch )
086        {
087            case( 'A' ):
088                if ( "AUXILIARY".equals( strValue ) || "ABSTRACT".equals( strValue ) )
089                {
090                    LOG.debug( "Syntax valid for '{}'", value );
091                    return true;
092                }
093
094            LOG.debug( "Syntax invalid for '{}'", value );
095                return false;
096            
097            case( 'S' ):
098                boolean result = "STRUCTURAL".equals( strValue );
099            
100                if ( result )
101                {
102                    LOG.debug( "Syntax valid for '{}'", value );
103                }
104                else
105                {
106                    LOG.debug( "Syntax invalid for '{}'", value );
107                }
108            
109                return result;
110            
111            default:
112                LOG.debug( "Syntax invalid for '{}'", value );
113                return false;
114        }
115    }
116}