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