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 @Override 057 public Value<?> normalize( Value<?> value ) throws LdapException 058 { 059 String str = value.getString(); 060 061 if ( Strings.isEmpty( str ) ) 062 { 063 return new StringValue( str ); 064 } 065 066 return new StringValue( str ); 067 } 068 069 070 /** 071 * {@inheritDoc} 072 */ 073 @Override 074 public String normalize( String value ) throws LdapException 075 { 076 if ( Strings.isEmpty( value ) ) 077 { 078 return value; 079 } 080 081 return value; 082 } 083 084 085 /** 086 * Normalize the given String 087 * 088 * @param string The string to normalize 089 * @return The normalized object 090 * @throws LdapException If the normalization throws an error 091 */ 092 public static String normalizeString( String string ) throws LdapException 093 { 094 return NORMALIZER.normalize( string ); 095 } 096}