Bug 204015 BRIT is not Picking up Vendor JDBC Drivers
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/util/JdbcToolKit.java
driverNameMap = null;
		file2Drivers = null;
	}
	 
	 /**
	  * Found drivers in the Jar file List
	  * @param file
	  * @return a List of JDBCDriverInformation
	  */
	public static void getJdbcDriverFromFile( List fileList )
	{
		if ( !failLoadFileList.isEmpty( ) )
		{
			fileList.addAll( failLoadFileList );
		}
		URLClassLoader urlClassLoader = createClassLoader( fileList );
		jdbcDriverInfos.addAll( getJDBCDriverInfoList( fileList, urlClassLoader ) );
	}
	/**
	 * Returns a List jdbc Drivers. The Drivers are searched from predefined
	 * directories in the DTE plug-in. Currently it is expected that the jdbc
	 * drivers are in the "drivers" directory of the DTE oda.jdbc plug-in.
	 * @param driverName
	 * @return
	 */
	public static List getJdbcDriversFromODADir( String driverName )
	{
		if ( jdbcDriverInfos != null )
		{