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1   /*
2    *   Licensed to the Apache Software Foundation (ASF) under one
3    *   or more contributor license agreements.  See the NOTICE file
4    *   distributed with this work for additional information
5    *   regarding copyright ownership.  The ASF licenses this file
6    *   to you under the Apache License, Version 2.0 (the
7    *   "License"); you may not use this file except in compliance
8    *   with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   *   Unless required by applicable law or agreed to in writing,
13   *   software distributed under the License is distributed on an
14   *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *   KIND, either express or implied.  See the License for the
16   *   specific language governing permissions and limitations
17   *   under the License.
18   *
19   */
20  package org.apache.directory.api.ldap.model.schema.comparators;
21  
22  
23  import org.apache.directory.api.ldap.model.schema.normalizers.CachingNormalizer;
24  import org.apache.directory.api.ldap.model.schema.normalizers.DeepTrimToLowerNormalizer;
25  
26  
27  /**
28   * A comparator that compare two Strings after having trimmed them on left and right,
29   * and replaced any contiguous spaces in the middle by 1 single space. The Strings are compared
30   * case insensitive. We also keep a cache
31   *
32   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
33   */
34  public class DeepTrimToLowerCachingNormalizingComparator extends NormalizingComparator
35  {
36      /** The serial version UID */
37      private static final long serialVersionUID = 2L;
38  
39  
40      /**
41       * Creates a new instance of DeepTrimToLowerCachingNormalizingComparator.
42       *
43       * @param oid The Comparator's OID
44       */
45      @SuppressWarnings(
46          { "rawtypes", "unchecked" })
47      public DeepTrimToLowerCachingNormalizingComparator( String oid )
48      {
49          super( oid, new CachingNormalizer( new DeepTrimToLowerNormalizer( oid ), 10 ),
50              new ComparableComparator( oid ) );
51      }
52  }