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.normalizers; 021 022 import org.apache.directory.shared.ldap.constants.SchemaConstants; 023 import org.apache.directory.shared.ldap.entry.StringValue; 024 import org.apache.directory.shared.ldap.entry.Value; 025 import org.apache.directory.shared.ldap.exception.LdapException; 026 import org.apache.directory.shared.ldap.schema.Normalizer; 027 import org.apache.directory.shared.ldap.util.StringTools; 028 029 030 /** 031 * A normalizer which transforms an escape sequence into an internal 032 * canonical form: into UTF-8 characters presuming the escape sequence 033 * fits that range. This is used explicity for non-binary attribute 034 * types only. 035 * 036 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 037 * @version $Rev$, $Date$ 038 */ 039 public class DefaultStringNormalizer extends Normalizer 040 { 041 // The serial UID 042 private static final long serialVersionUID = 1L; 043 044 /** A default String normalizer */ 045 private static final DefaultStringNormalizer NORMALIZER = new DefaultStringNormalizer(); 046 047 protected DefaultStringNormalizer() 048 { 049 // TODO : This is probably not the correct OID ... 050 super( SchemaConstants.CASE_IGNORE_MATCH_MR_OID ); 051 } 052 053 054 /** 055 * {@inheritDoc} 056 */ 057 public Value<?> normalize( Value<?> value ) throws LdapException 058 { 059 String str = value.getString(); 060 061 if ( StringTools.isEmpty( str ) ) 062 { 063 return new StringValue( str ); 064 } 065 066 return new StringValue( str ); 067 } 068 069 070 /** 071 * {@inheritDoc} 072 */ 073 public String normalize( String value ) throws LdapException 074 { 075 if ( StringTools.isEmpty( value ) ) 076 { 077 return value; 078 } 079 080 return value; 081 } 082 083 084 /** 085 * Normalize the given String 086 * 087 * @param string The string to normalize 088 * @return The normalized object 089 * @throws LdapException If the normalization throws an error 090 */ 091 public static String normalizeString( String string ) throws LdapException 092 { 093 return NORMALIZER.normalize( string ); 094 } 095 }