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 attributeType's type is either: 
032 * userApplications
033 * directoryOperation
034 * distributedOperation
035 * dSAOperation
036.*  The case is NOT ignored.
037 *
038 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
039 */
040@SuppressWarnings("serial")
041public class AttributeTypeUsageSyntaxChecker extends SyntaxChecker
042{
043    /** A logger for this class */
044    private static final Logger LOG = LoggerFactory.getLogger( AttributeTypeUsageSyntaxChecker.class );
045
046    /**
047     * 
048     * Creates a new instance of AttributeTypeUsageSyntaxChecker.
049     *
050     */
051    public AttributeTypeUsageSyntaxChecker()
052    {
053        super( SchemaConstants.ATTRIBUTE_TYPE_USAGE_SYNTAX );
054    }
055
056
057    /**
058     * {@inheritDoc}
059     */
060    public boolean isValidSyntax( Object value )
061    {
062        String strValue = null;
063
064        if ( value == null )
065        {
066            LOG.debug( "Syntax invalid for 'null'" );
067            return false;
068        }
069        
070        if ( value instanceof String )
071        {
072            strValue = ( String ) value;
073        }
074        else if ( value instanceof byte[] )
075        {
076            strValue = Strings.utf8ToString((byte[]) value);
077        }
078        else
079        {
080            strValue = value.toString();
081        }
082
083        if ( ( strValue.length() < "userApplications".length() )
084            || ( strValue.length() > "userApplications".length() ) )
085        {
086            LOG.debug( "Syntax invalid for '{}'", value );
087            return false;
088        }
089        
090        char ch = strValue.charAt( 0 );
091
092        switch ( ch )
093        {
094            case( 'd' ):
095                if ( "dSAOperation".equals( strValue )
096                    || "directoryOperation".equals( strValue )
097                    || "distributedOperation".equals( strValue ) )
098               {
099                    LOG.debug( "Syntax valid for '{}'", value );
100                    return true;
101                }
102
103                LOG.debug( "Syntax invalid for '{}'", value );
104                return false;
105            
106            case( 'u' ):
107                boolean comp = "userApplications".equals( strValue );
108            
109                if ( comp )
110                {
111                    LOG.debug( "Syntax valid for '{}'", value );
112                }
113                else
114                {
115                    LOG.debug( "Syntax invalid for '{}'", value );
116                    
117                }
118                
119                return comp;
120            
121            default:
122                LOG.debug( "Syntax invalid for '{}'", value );
123                return false;
124        }
125    }
126}