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.normalizers;
021
022
023import org.apache.directory.api.ldap.model.constants.SchemaConstants;
024import org.apache.directory.api.ldap.model.entry.StringValue;
025import org.apache.directory.api.ldap.model.entry.Value;
026import org.apache.directory.api.ldap.model.exception.LdapException;
027import org.apache.directory.api.ldap.model.schema.Normalizer;
028import org.apache.directory.api.util.Strings;
029
030
031/**
032 * A normalizer for the objectIdentifierMatch matching rule.
033 * 
034 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
035 */
036@SuppressWarnings("serial")
037public class ObjectIdentifierNormalizer extends Normalizer
038{
039    /**
040     * Creates a new instance of ObjectIdentifierNormalizer.
041     */
042    public ObjectIdentifierNormalizer()
043    {
044        super( SchemaConstants.OBJECT_IDENTIFIER_MATCH_MR_OID );
045    }
046
047
048    /**
049     * {@inheritDoc}
050     */
051    public Value<?> normalize( Value<?> value ) throws LdapException
052    {
053        if ( value == null )
054        {
055            return null;
056        }
057
058        String str = value.getString().trim();
059
060        if ( str.length() == 0 )
061        {
062            return new StringValue( "" );
063        }
064        else if ( Character.isDigit( str.charAt( 0 ) ) )
065        {
066            // We do this test to avoid a lowerCasing which cost time
067            return new StringValue( str );
068        }
069        else
070        {
071            return new StringValue( Strings.toLowerCaseAscii( str ) );
072        }
073    }
074
075
076    /**
077     * {@inheritDoc}
078     */
079    public String normalize( String value ) throws LdapException
080    {
081        if ( value == null )
082        {
083            return null;
084        }
085
086        String str = value.trim();
087
088        if ( str.length() == 0 )
089        {
090            return "";
091        }
092        else if ( Character.isDigit( str.charAt( 0 ) ) )
093        {
094            // We do this test to avoid a lowerCasing which cost time
095            return str;
096        }
097        else
098        {
099            return Strings.toLowerCaseAscii( str );
100        }
101    }
102}