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 import java.text.ParseException; 023 024 import org.apache.directory.shared.ldap.aci.ACIItemChecker; 025 import org.apache.directory.shared.ldap.constants.SchemaConstants; 026 import org.apache.directory.shared.ldap.schema.SyntaxChecker; 027 import org.apache.directory.shared.ldap.util.StringTools; 028 import org.slf4j.Logger; 029 import org.slf4j.LoggerFactory; 030 031 032 /** 033 * A SyntaxChecker which verifies that a value is a valid ACIItem. 034 * 035 * 036 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 037 * @version $Rev: 488616 $ 038 */ 039 public class ACIItemSyntaxChecker extends SyntaxChecker 040 { 041 /** A logger for this class */ 042 private static final Logger LOG = LoggerFactory.getLogger( ACIItemSyntaxChecker.class ); 043 044 /** The serialVersionUID */ 045 private static final long serialVersionUID = 1L; 046 047 /** An instance of ACI Item Checker */ 048 private static final ACIItemChecker ACI_ITEM_CHECKER = new ACIItemChecker(); 049 050 /** 051 * Creates a new instance of ACIItemSyntaxChecker 052 */ 053 public ACIItemSyntaxChecker() 054 { 055 super( SchemaConstants.ACI_ITEM_SYNTAX ); 056 } 057 058 059 /** 060 * {@inheritDoc} 061 */ 062 public boolean isValidSyntax( Object value ) 063 { 064 String strValue = null; 065 066 if ( value == null ) 067 { 068 LOG.debug( "Syntax invalid for '{}'", value ); 069 return false; 070 } 071 072 if ( value instanceof String ) 073 { 074 strValue = ( String ) value; 075 } 076 else if ( value instanceof byte[] ) 077 { 078 strValue = StringTools.utf8ToString( ( byte[] ) value ); 079 } 080 else 081 { 082 strValue = value.toString(); 083 } 084 085 if ( strValue.length() == 0 ) 086 { 087 LOG.debug( "Syntax invalid for '{}'", value ); 088 return false; 089 } 090 091 try 092 { 093 synchronized( ACI_ITEM_CHECKER ) 094 { 095 ACI_ITEM_CHECKER.parse( strValue ); 096 } 097 098 LOG.debug( "Syntax valid for '{}'", value ); 099 return true; 100 } 101 catch ( ParseException pe ) 102 { 103 LOG.debug( "Syntax invalid for '{}'", value ); 104 return false; 105 } 106 } 107 }