Bug 214196 [Automation][Compatibility]Exception occurs when preview a old crosstab with measure sorting
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/DataEngineImpl.java
private DataSourceManager dataSourceManager;
	
	
	private List shutdownListenerList = null;
	
	protected static Logger logger = Logger.getLogger( DataEngineImpl.class.getName( ) );
	/**
	 * Constructor to specify the DataEngine Context to use by the Data Engine
	 * for all related ReportQuery processing.
	 * 
	 * @param context
	 *            scope of Context: The global JavaScript scope shared by all
	 *            runtime components within a report session. If this parameter
	 *            is null, a new standard top level scope will be created and
	 *            used.
	 */
	public DataEngineImpl( DataEngineContext context )
	{
		assert context != null;
		
		logger.entering( DataEngineImpl.class.getName( ),
				"DataEngineImpl",
				context );
		
		this.context = context;
						
		dataSourceManager = new DataSourceManager( logger );
		this.session = new DataEngineSession( this );
		logger.exiting( DataEngineImpl.class.getName( ), "DataEngineImpl" );
		logger.log( Level.INFO, "Data Engine starts up" );