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    @Override
052    public Value<?> normalize( Value<?> value ) throws LdapException
053    {
054        if ( value == null )
055        {
056            return null;
057        }
058
059        String str = value.getString().trim();
060
061        if ( str.length() == 0 )
062        {
063            return new StringValue( "" );
064        }
065        else if ( Character.isDigit( str.charAt( 0 ) ) )
066        {
067            // We do this test to avoid a lowerCasing which cost time
068            return new StringValue( str );
069        }
070        else
071        {
072            return new StringValue( Strings.toLowerCaseAscii( str ) );
073        }
074    }
075
076
077    /**
078     * {@inheritDoc}
079     */
080    @Override
081    public String normalize( String value ) throws LdapException
082    {
083        if ( value == null )
084        {
085            return null;
086        }
087
088        String str = value.trim();
089
090        if ( str.length() == 0 )
091        {
092            return "";
093        }
094        else if ( Character.isDigit( str.charAt( 0 ) ) )
095        {
096            // We do this test to avoid a lowerCasing which cost time
097            return str;
098        }
099        else
100        {
101            return Strings.toLowerCaseAscii( str );
102        }
103    }
104}