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 SyntaxChecker which verifies that a value is a Boolean according to RFC 4517. 032 * 033 * From RFC 4517 : 034 * 035 * Boolean = "TRUE" / "FALSE" 036 * 037 * 038 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 039 * @version $Rev$ 040 */ 041 public class BooleanSyntaxChecker extends SyntaxChecker 042 { 043 /** A logger for this class */ 044 private static final Logger LOG = LoggerFactory.getLogger( BooleanSyntaxChecker.class ); 045 046 /** The serialVersionUID */ 047 private static final long serialVersionUID = 1L; 048 049 /** 050 * Creates a new instance of BooleanSyntaxChecker. 051 */ 052 public BooleanSyntaxChecker() 053 { 054 super( SchemaConstants.BOOLEAN_SYNTAX ); 055 } 056 057 058 /** 059 * {@inheritDoc} 060 */ 061 public boolean isValidSyntax( Object value ) 062 { 063 String strValue = null; 064 065 if ( value == null ) 066 { 067 LOG.debug( "Syntax invalid for '{}'", strValue ); 068 return false; 069 } 070 071 if ( value instanceof String ) 072 { 073 strValue = ( String ) value; 074 } 075 else if ( value instanceof byte[] ) 076 { 077 strValue = StringTools.utf8ToString( ( byte[] ) value ); 078 } 079 else 080 { 081 strValue = value.toString(); 082 } 083 084 if ( strValue.length() == 0 ) 085 { 086 LOG.debug( "Syntax invalid for '{}'", strValue ); 087 return false; 088 } 089 090 boolean valid = ( ( "TRUE".equalsIgnoreCase( strValue ) ) || ( "FALSE".equalsIgnoreCase( strValue ) ) ); 091 092 if ( valid ) 093 { 094 LOG.debug( "Syntax valid for '{}'", strValue ); 095 } 096 else 097 { 098 LOG.debug( "Syntax invalid for '{}'", strValue ); 099 } 100 101 return valid; 102 } 103 }