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.i18n.I18n;
028 import org.apache.directory.shared.ldap.entry.Value;
029 import org.apache.directory.shared.ldap.entry.client.ClientStringValue;
030 import org.apache.directory.shared.ldap.schema.Normalizer;
031 import org.apache.directory.shared.ldap.schema.PrepareString;
032
033
034 /**
035 * Normalizer which trims down whitespace replacing multiple whitespace
036 * characters on the edges and within the string with a single space character
037 * thereby preserving tokenization order - while doing all this in the same pass
038 * it lower cases all characters.
039 *
040 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
041 * @version $Rev: 912436 $
042 */
043 public class DeepTrimToLowerNormalizer extends Normalizer
044 {
045 /** The serial UID */
046 public static final long serialVersionUID = 1L;
047
048 /**
049 * Creates a new instance of DeepTrimToLowerNormalizer.
050 *
051 * @param oid The MR OID to use with this Normalizer
052 */
053 public DeepTrimToLowerNormalizer( String oid )
054 {
055 super( oid );
056 }
057
058
059 /**
060 * Creates a new instance of DeepTrimToLowerNormalizer where the OID is
061 * set after instantiation.
062 */
063 public DeepTrimToLowerNormalizer()
064 {
065 }
066
067
068 /**
069 * {@inheritDoc}
070 */
071 public Value<?> normalize( Value<?> value ) throws NamingException
072 {
073 if ( value == null )
074 {
075 return null;
076 }
077
078 try
079 {
080 String normalized = PrepareString.normalize( value.getString(),
081 PrepareString.StringType.CASE_IGNORE );
082
083 return new ClientStringValue( normalized );
084 }
085 catch ( IOException ioe )
086 {
087 throw new NamingException( I18n.err( I18n.ERR_04224, value ) );
088 }
089 }
090
091
092 /**
093 * {@inheritDoc}
094 */
095 public String normalize( String value ) throws NamingException
096 {
097 if ( value == null )
098 {
099 return null;
100 }
101
102 try
103 {
104 String normalized = PrepareString.normalize( value,
105 PrepareString.StringType.CASE_IGNORE );
106
107 return normalized;
108 }
109 catch ( IOException ioe )
110 {
111 throw new NamingException( I18n.err( I18n.ERR_04224, value ) );
112 }
113 }
114 }