DataSourceHandle dataSource ) throws BirtException
DataSourceHandle dataSource, ExecutionContext context ) throws EngineException
	public IBaseDataSourceDesign createDataSourceDesign(			DataSourceHandle dataSource ) throws BirtException	{		if ( dataSource instanceof OdaDataSourceHandle )			return newOdaDataSource( ( OdaDataSourceHandle ) dataSource );		if ( dataSource instanceof ScriptDataSourceHandle )			return newScriptDataSource( ( ScriptDataSourceHandle ) dataSource );		// any other types are not supported		assert false;		return null;	}