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, eCopyOfUuidSyntaxCheckerither 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 import org.apache.directory.shared.ldap.constants.SchemaConstants;
023 import org.apache.directory.shared.ldap.csn.Csn;
024 import org.apache.directory.shared.ldap.csn.InvalidCSNException;
025 import org.apache.directory.shared.ldap.schema.SyntaxChecker;
026 import org.slf4j.Logger;
027 import org.slf4j.LoggerFactory;
028
029
030 /**
031 * An CSN syntax checker.
032 *
033 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
034 * @version $Rev: 736240 $
035 */
036 public class CsnSyntaxChecker extends SyntaxChecker
037 {
038 /** A logger for this class */
039 private static final Logger LOG = LoggerFactory.getLogger( CsnSyntaxChecker.class );
040
041 /** The serialVersionUID */
042 private static final long serialVersionUID = 1L;
043
044 /**
045 * Creates a new instance of CsnSyntaxChecker.
046 */
047 public CsnSyntaxChecker()
048 {
049 super( SchemaConstants.CSN_SYNTAX );
050 }
051
052
053 /**
054 * {@inheritDoc}
055 */
056 public boolean isValidSyntax( Object value )
057 {
058 if ( value == null )
059 {
060 LOG.debug( "Syntax invalid for '{}'", value );
061 return false;
062 }
063
064 if ( ! ( value instanceof String ) )
065 {
066 LOG.debug( "Syntax invalid for '{}'", value );
067 return false;
068 }
069
070 String csnStr = (String)value;
071
072 // It must be a valid CSN : try to create a new one.
073 try
074 {
075 boolean result = Csn.isValid( csnStr );
076
077 if ( result )
078 {
079 LOG.debug( "Syntax valid for '{}'", value );
080 }
081 else
082 {
083 LOG.debug( "Syntax invalid for '{}'", value );
084 }
085
086 return result;
087 }
088 catch ( InvalidCSNException icsne )
089 {
090 LOG.debug( "Syntax invalid for '{}'", value );
091 return false;
092 }
093 }
094 }