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     */
020    package org.apache.directory.shared.ldap.schema.syntaxCheckers;
021    
022    
023    import org.apache.directory.shared.ldap.constants.SchemaConstants;
024    import org.apache.directory.shared.ldap.schema.SyntaxChecker;
025    import org.apache.directory.shared.ldap.util.StringTools;
026    import org.slf4j.Logger;
027    import 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     * @version $Rev$
036     */
037    public class ObjectClassTypeSyntaxChecker extends SyntaxChecker
038    {
039        /** A logger for this class */
040        private static final Logger LOG = LoggerFactory.getLogger( ObjectClassTypeSyntaxChecker.class );
041    
042        /** The serialVersionUID */
043        private static final long serialVersionUID = 1L;
044    
045        /**
046         * Creates a new instance of ObjectClassTypeSyntaxChecker.
047         */
048        public ObjectClassTypeSyntaxChecker()
049        {
050            super( SchemaConstants.OBJECT_CLASS_TYPE_SYNTAX );
051        }
052    
053        
054        /**
055         * {@inheritDoc}
056         */
057        public boolean isValidSyntax( Object value )
058        {
059            String strValue = null;
060    
061            if ( value == null )
062            {
063                LOG.debug( "Syntax invalid for '{}'", value );
064                return false;
065            }
066            
067            if ( value instanceof String )
068            {
069                strValue = ( String ) value;
070            }
071            else if ( value instanceof byte[] )
072            {
073                strValue = StringTools.utf8ToString( ( byte[] ) value ); 
074            }
075            else
076            {
077                strValue = value.toString();
078            }
079    
080            if ( strValue.length() < 8 || strValue.length() > 10 )
081            {
082                LOG.debug( "Syntax invalid for '{}'", value );
083                return false;
084            }
085            
086            char ch = strValue.charAt( 0 );
087    
088            switch( ch )
089            {
090                case( 'A' ):
091                    if ( "AUXILIARY".equals( strValue ) || "ABSTRACT".equals( strValue ) )
092                    {
093                        LOG.debug( "Syntax valid for '{}'", value );
094                        return true;
095                    }
096    
097                LOG.debug( "Syntax invalid for '{}'", value );
098                    return false;
099                
100                case( 'S' ):
101                    boolean result = "STRUCTURAL".equals( strValue );
102                
103                    if ( result )
104                    {
105                        LOG.debug( "Syntax valid for '{}'", value );
106                    }
107                    else
108                    {
109                        LOG.debug( "Syntax invalid for '{}'", value );
110                    }
111                
112                    return result;
113                
114                default:
115                    LOG.debug( "Syntax invalid for '{}'", value );
116                    return false;
117            }
118        }
119    }