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.i18n.I18n;
024import org.apache.directory.api.ldap.model.constants.SchemaConstants;
025import org.apache.directory.api.ldap.model.entry.StringValue;
026import org.apache.directory.api.ldap.model.entry.Value;
027import org.apache.directory.api.ldap.model.exception.LdapException;
028import org.apache.directory.api.ldap.model.name.Dn;
029import org.apache.directory.api.ldap.model.schema.Normalizer;
030import org.apache.directory.api.ldap.model.schema.SchemaManager;
031import org.apache.directory.api.util.Strings;
032
033
034/**
035 * A noirmalizer for UniqueMember
036 * 
037 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
038 */
039@SuppressWarnings("serial")
040public class UniqueMemberNormalizer extends Normalizer
041{
042    /** A reference to the schema manager used to normalize the Dn */
043    private SchemaManager schemaManager;
044
045
046    /**
047     * Creates a new UniqueMemberNormalizer instance
048     */
049    public UniqueMemberNormalizer()
050    {
051        super( SchemaConstants.UNIQUE_MEMBER_MATCH_MR_OID );
052    }
053
054
055    @Override
056    public Value<?> normalize( Value<?> value ) throws LdapException
057    {
058        String nameAndUid = value.getString();
059
060        if ( nameAndUid.length() == 0 )
061        {
062            return null;
063        }
064
065        // Let's see if we have an UID part
066        int sharpPos = nameAndUid.lastIndexOf( '#' );
067
068        if ( sharpPos != -1 )
069        {
070            // Now, check that we don't have another '#'
071            if ( nameAndUid.indexOf( '#' ) != sharpPos )
072            {
073                // Yes, we have one : this is not allowed, it should have been
074                // escaped.
075                return null;
076            }
077
078            // This is an UID if the '#' is immediately
079            // followed by a BitString, except if the '#' is
080            // on the last position
081            String uid = nameAndUid.substring( sharpPos + 1 );
082
083            if ( sharpPos > 0 )
084            {
085                Dn dn = new Dn( schemaManager, nameAndUid.substring( 0, sharpPos ) );
086
087                return new StringValue( dn.getNormName() + '#' + uid );
088            }
089            else
090            {
091                throw new IllegalStateException( I18n.err( I18n.ERR_04226, value.getClass() ) );
092            }
093        }
094        else
095        {
096            // No UID, the strValue is a Dn
097            // Return the normalized Dn
098            return new StringValue( new Dn( nameAndUid ).getNormName() );
099        }
100    }
101
102
103    @Override
104    public String normalize( String value ) throws LdapException
105    {
106        if ( Strings.isEmpty( value ) )
107        {
108            return null;
109        }
110
111        // Let's see if we have an UID part
112        int sharpPos = value.lastIndexOf( '#' );
113
114        if ( sharpPos != -1 )
115        {
116            // Now, check that we don't have another '#'
117            if ( value.indexOf( '#' ) != sharpPos )
118            {
119                // Yes, we have one : this is not allowed, it should have been
120                // escaped.
121                return null;
122            }
123
124            // This is an UID if the '#' is immediatly
125            // followed by a BitString, except if the '#' is
126            // on the last position
127            String uid = value.substring( sharpPos + 1 );
128
129            if ( sharpPos > 0 )
130            {
131                Dn dn = new Dn( schemaManager, value.substring( 0, sharpPos ) );
132
133                return dn.getNormName() + '#' + uid;
134            }
135            else
136            {
137                throw new IllegalStateException( I18n.err( I18n.ERR_04226, value.getClass() ) );
138            }
139        }
140        else
141        {
142            // No UID, the strValue is a Dn
143            // Return the normalized Dn
144            return new Dn( schemaManager, value ).getNormName();
145        }
146    }
147
148
149    /**
150     * {@inheritDoc}
151     */
152    @Override
153    public void setSchemaManager( SchemaManager schemaManager )
154    {
155        this.schemaManager = schemaManager;
156    }
157}