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.comparators;
021
022
023import org.apache.directory.api.ldap.model.schema.normalizers.CachingNormalizer;
024import org.apache.directory.api.ldap.model.schema.normalizers.DeepTrimNormalizer;
025
026
027/**
028 * A comparator that compare two Strings after having trimmed them on left and right,
029 * and replaced any contiguous spaces in the middle by 1 single space. We also keep a cache.
030 *
031 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
032 */
033public class DeepTrimCachingNormalizingComparator extends NormalizingComparator
034{
035    /** The serial version UID */
036    private static final long serialVersionUID = 2L;
037
038
039    /**
040     * 
041     * Creates a new instance of DeepTrimCachingNormalizingComparator.
042     *
043     * @param oid The Comparator's OID
044     */
045    @SuppressWarnings(
046        { "rawtypes", "unchecked" })
047    public DeepTrimCachingNormalizingComparator( String oid )
048    {
049        super( oid, new CachingNormalizer( new DeepTrimNormalizer( oid ), 10 ),
050            new ComparableComparator( oid ) );
051    }
052}