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.normalizers; 021 022import org.apache.directory.shared.ldap.model.constants.SchemaConstants; 023import org.apache.directory.shared.ldap.model.entry.StringValue; 024import org.apache.directory.shared.ldap.model.entry.Value; 025import org.apache.directory.shared.ldap.model.exception.LdapException; 026import org.apache.directory.shared.ldap.model.schema.Normalizer; 027import org.apache.directory.shared.util.Strings; 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 */ 038@SuppressWarnings("serial") 039public class DefaultStringNormalizer extends Normalizer 040{ 041 /** A default String normalizer */ 042 private static final DefaultStringNormalizer NORMALIZER = new DefaultStringNormalizer(); 043 044 protected DefaultStringNormalizer() 045 { 046 // TODO : This is probably not the correct OID ... 047 super( SchemaConstants.CASE_IGNORE_MATCH_MR_OID ); 048 } 049 050 051 /** 052 * {@inheritDoc} 053 */ 054 public Value<?> normalize( Value<?> value ) throws LdapException 055 { 056 String str = value.getString(); 057 058 if ( Strings.isEmpty(str) ) 059 { 060 return new StringValue( str ); 061 } 062 063 return new StringValue( str ); 064 } 065 066 067 /** 068 * {@inheritDoc} 069 */ 070 public String normalize( String value ) throws LdapException 071 { 072 if ( Strings.isEmpty(value) ) 073 { 074 return value; 075 } 076 077 return value; 078 } 079 080 081 /** 082 * Normalize the given String 083 * 084 * @param string The string to normalize 085 * @return The normalized object 086 * @throws LdapException If the normalization throws an error 087 */ 088 public static String normalizeString( String string ) throws LdapException 089 { 090 return NORMALIZER.normalize( string ); 091 } 092}