Bug 128359 The logic is not correctly when a filter is added to the table on the layout
Description: The logic is not correctly when a filter is added to the table on the layout Steps to reproduce: Let me give an example. 1. Creat a report, new a datasource and a dataset 2. We consume that the dataset has 10 records(DataResult_A) . We set a filter(Filter_A) in the dataset, and then the 6 records of the dataset(DataResult_B) are gained. 3. Drag the dataset to the layout, and set another filter(Filter_B) on the table. Actual result: The result of Filter_B is based on DataResult_A. Expect result: The result of Filter_B should be based on DataResult_B.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/PreparedQuery.java
{
	private 	IBaseQueryDefinition 	queryDefn;
	private 	DataEngineImpl	engine;
	private  	AggregateTable	aggrTable;
	private 	Map appContext;
	
	
	protected HashMap subQueryMap = new HashMap();
	
	protected static Logger logger = Logger.getLogger( DataEngineImpl.class.getName( ) );
	/**
	 * @param engine
	 * @param queryDefn
	 * @throws DataException
	 */
	PreparedQuery( DataEngineImpl engine, IBaseQueryDefinition queryDefn )
		throws DataException
	{
		logger.logp( Level.FINE,
				PreparedQuery.class.getName( ),
				"PreparedQuery",