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
023 import java.io.IOException;
024
025 import javax.naming.NamingException;
026
027 import org.apache.directory.shared.ldap.entry.Value;
028 import org.apache.directory.shared.ldap.entry.client.ClientStringValue;
029 import org.apache.directory.shared.ldap.schema.Normalizer;
030 import org.apache.directory.shared.ldap.schema.PrepareString;
031
032
033 /**
034 * Normalizer which trims down whitespace replacing multiple whitespace
035 * characters on the edges and within the string with a single space character
036 * thereby preserving tokenization order - while doing all this in the same pass
037 * it lower cases all characters.
038 *
039 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
040 * @version $Rev: 798550 $
041 */
042 public class DeepTrimToLowerNormalizer implements Normalizer
043 {
044 // The serial UID
045 private static final long serialVersionUID = 1L;
046
047 /**
048 * {@inheritDoc}
049 */
050 public Value<?> normalize( Value<?> value ) throws NamingException
051 {
052 if ( value == null )
053 {
054 return null;
055 }
056
057 try
058 {
059 String normalized = PrepareString.normalize( value.getString(),
060 PrepareString.StringType.CASE_IGNORE );
061
062 return new ClientStringValue( normalized );
063 }
064 catch ( IOException ioe )
065 {
066 throw new NamingException( "Invalid value : " + value );
067 }
068 }
069
070
071 /**
072 * {@inheritDoc}
073 */
074 public String normalize( String value ) throws NamingException
075 {
076 if ( value == null )
077 {
078 return null;
079 }
080
081 try
082 {
083 String normalized = PrepareString.normalize( value,
084 PrepareString.StringType.CASE_IGNORE );
085
086 return normalized;
087 }
088 catch ( IOException ioe )
089 {
090 throw new NamingException( "Invalid value : " + value );
091 }
092 }
093 }