core/src/main/java/org/apache/directory/server/core/schema/bootstrap/BootstrapSyntaxCheckerRegistry.java

/*
 *  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.core.schema.bootstrap;


import java.util.HashMap;
import java.util.Map;

import javax.naming.NamingException;

import org.apache.directory.server.core.schema.SyntaxCheckerRegistry;
import org.apache.directory.server.core.schema.SyntaxCheckerRegistryMonitor;
import org.apache.directory.server.core.schema.SyntaxCheckerRegistryMonitorAdapter;
import org.apache.directory.shared.ldap.schema.SyntaxChecker;


/**
 * The POJO implementation for the SyntaxCheckerRegistry service.
 *
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 * @version $Rev$
 */
public class BootstrapSyntaxCheckerRegistry implements SyntaxCheckerRegistry
{
    /** a map by OID of SyntaxCheckers */
    private final Map byOid;
    /** maps an OID to a schema name*/
    private final Map oidToSchema;
    /** the monitor to use for callback event notifications */
    private SyntaxCheckerRegistryMonitor monitor;


    // ------------------------------------------------------------------------
    // C O N S T R U C T O R S
    // ------------------------------------------------------------------------

    /**
     * Creates an instance of a BootstrapSyntaxRegistry.
     */
    public BootstrapSyntaxCheckerRegistry()
    {
        this.byOid = new HashMap();
        this.oidToSchema = new HashMap();
        this.monitor = new SyntaxCheckerRegistryMonitorAdapter();
    }


    /**
     * Sets the monitor used to deliver notification events to via callbacks.
     *
     * @param monitor the monitor to recieve callback events
     */
    public void setMonitor( SyntaxCheckerRegistryMonitor monitor )
    {
        this.monitor = monitor;
    }


    // ------------------------------------------------------------------------
    // Service Methods
    // ------------------------------------------------------------------------

    public void register( String schema, String oid, SyntaxChecker syntaxChecker ) throws NamingException
    {
        if ( byOid.containsKey( oid ) )
        {
            NamingException e = new NamingException( "SyntaxChecker with OID " + oid + " already registered!" );
            monitor.registerFailed( oid, syntaxChecker, e );
            throw e;
        }

        byOid.put( oid, syntaxChecker );
        oidToSchema.put( oid, schema );
        monitor.registered( oid, syntaxChecker );
    }


    public SyntaxChecker lookup( String oid ) throws NamingException
    {
        if ( !byOid.containsKey( oid ) )
        {
            NamingException e = new NamingException( "SyntaxChecker for OID " + oid + " not found!" );
            monitor.lookupFailed( oid, e );
            throw e;
        }

        SyntaxChecker syntaxChecker = ( SyntaxChecker ) byOid.get( oid );
        monitor.lookedUp( oid, syntaxChecker );
        return null;
    }


    public boolean hasSyntaxChecker( String oid )
    {
        return byOid.containsKey( oid );
    }


    public String getSchemaName( String oid ) throws NamingException
    {
        if ( Character.isDigit( oid.charAt( 0 ) ) )
        {
            throw new NamingException( "Looks like the arg is not a numeric OID" );
        }

        if ( oidToSchema.containsKey( oid ) )
        {
            return ( String ) oidToSchema.get( oid );
        }

        throw new NamingException( "OID " + oid + " not found in oid to " + "schema name map!" );
    }
}