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 022import java.text.ParseException; 023 024import org.apache.directory.shared.ldap.model.constants.SchemaConstants; 025import org.apache.directory.shared.ldap.model.schema.SchemaManager; 026import org.apache.directory.shared.ldap.model.schema.SyntaxChecker; 027import org.apache.directory.shared.ldap.model.subtree.SubtreeSpecificationChecker; 028import org.apache.directory.shared.util.Strings; 029import org.slf4j.Logger; 030import org.slf4j.LoggerFactory; 031 032 033/** 034 * A SyntaxChecker which verifies that a value is a subtree specification. 035 * 036 * It has been removed in RFC 4517 037 * 038 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 039 */ 040@SuppressWarnings("serial") 041public class SubtreeSpecificationSyntaxChecker extends SyntaxChecker 042{ 043 /** A logger for this class */ 044 private static final Logger LOG = LoggerFactory.getLogger( SubtreeSpecificationSyntaxChecker.class ); 045 046 /** The associated checker */ 047 private SubtreeSpecificationChecker subtreeSpecificationChecker; 048 049 /** 050 * Creates an instance of SubtreeSpecificationSyntaxChecker 051 */ 052 public SubtreeSpecificationSyntaxChecker() 053 { 054 super( SchemaConstants.SUBTREE_SPECIFICATION_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 'null'" ); 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 = Strings.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 '{}'", value ); 087 return false; 088 } 089 090 try 091 { 092 synchronized( subtreeSpecificationChecker ) 093 { 094 subtreeSpecificationChecker.parse( strValue ); 095 } 096 097 LOG.debug( "Syntax valid for '{}'", value ); 098 return true; 099 } 100 catch ( ParseException pe ) 101 { 102 LOG.debug( "Syntax invalid for '{}'", value ); 103 return false; 104 } 105 } 106 107 108 /** 109 * {@inheritDoc} 110 */ 111 public void setSchemaManager( SchemaManager schemaManager ) 112 { 113 subtreeSpecificationChecker = new SubtreeSpecificationChecker( schemaManager ); 114 } 115}