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.api.ldap.model.schema.syntaxCheckers; 021 022 023import org.apache.directory.api.ldap.model.constants.SchemaConstants; 024import org.apache.directory.api.ldap.model.schema.SyntaxChecker; 025import org.apache.directory.api.util.Strings; 026import org.slf4j.Logger; 027import 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 */ 040@SuppressWarnings("serial") 041public class BooleanSyntaxChecker extends SyntaxChecker 042{ 043 /** A logger for this class */ 044 private static final Logger LOG = LoggerFactory.getLogger( BooleanSyntaxChecker.class ); 045 046 047 /** 048 * Creates a new instance of BooleanSyntaxChecker. 049 */ 050 public BooleanSyntaxChecker() 051 { 052 super( SchemaConstants.BOOLEAN_SYNTAX ); 053 } 054 055 056 /** 057 * {@inheritDoc} 058 */ 059 public boolean isValidSyntax( Object value ) 060 { 061 String strValue = null; 062 063 if ( value == null ) 064 { 065 LOG.debug( "Syntax invalid for 'null'" ); 066 return false; 067 } 068 069 if ( value instanceof String ) 070 { 071 strValue = ( String ) value; 072 } 073 else if ( value instanceof byte[] ) 074 { 075 strValue = Strings.utf8ToString( ( byte[] ) value ); 076 } 077 else 078 { 079 strValue = value.toString(); 080 } 081 082 if ( strValue.length() == 0 ) 083 { 084 LOG.debug( "Syntax invalid for '{}'", strValue ); 085 return false; 086 } 087 088 boolean valid = ( ( "TRUE".equalsIgnoreCase( strValue ) ) || ( "FALSE".equalsIgnoreCase( strValue ) ) ); 089 090 if ( valid ) 091 { 092 LOG.debug( "Syntax valid for '{}'", strValue ); 093 } 094 else 095 { 096 LOG.debug( "Syntax invalid for '{}'", strValue ); 097 } 098 099 return valid; 100 } 101}