/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *  
 *    http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License. 
 *  
 */
package org.apache.directory.server.schema;


import javax.naming.Name;
import javax.naming.NamingException;

import org.apache.directory.server.schema.registries.AttributeTypeRegistry;
import org.apache.directory.server.schema.registries.Registries;
import org.apache.directory.shared.ldap.name.LdapDN;
import org.apache.directory.shared.ldap.schema.Normalizer;


/**
 * 
 * 
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 * @version $Rev$
 */
public class DnNormalizer implements Normalizer
{
    private static final long serialVersionUID = 1L;

    // @TODO use this later for seting up normalization
    private AttributeTypeRegistry attrRegistry;
    
    
    public DnNormalizer( AttributeTypeRegistry attrRegistry )
    {
        this.attrRegistry = attrRegistry;
    }
    
    
    public DnNormalizer()
    {
    }
 
    
    public void setRegistries( Registries registries )
    {
        this.attrRegistry = registries.getAttributeTypeRegistry();
    }
    

    public Object normalize( Object value ) throws NamingException
    {
        LdapDN dn = null;
        
        if ( value instanceof LdapDN )
        {
            dn = ( LdapDN ) ( ( LdapDN ) value ).clone();
        }
        else if ( value instanceof Name )
        {
            dn = new LdapDN( ( Name ) value );
        }
        else if ( value instanceof String )
        {
            dn = new LdapDN( ( String ) value );
        }
        else
        {
            throw new IllegalStateException( "I do not know how to handle dn normalization with objects of class: " 
                + (value == null ? null : value.getClass() ) );
        }
        
        dn.normalize( attrRegistry.getNormalizerMapping() );
        return dn.getNormName();
    }
}