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
if ( subquery == null )
		{
			DataException e = new DataException( ResourceConstants.SUBQUERY_NOT_FOUND,
					subQueryName );
			logger.logp( Level.FINE,
					PreparedQuery.class.getName( ),
					"execSubquery",
					"Subquery name not found",
					e );
			throw e;
		}
		
		return subquery.execute( iterator, subScope );
	}
	
	/**
	 * @return
	 */
	DataEngineImpl getDataEngine()
	{
		return engine;
	}
	
	/**
	 * Closes the prepared query. This instance can no longer be executed after
	 * it is closed 
	 * 
	 * TODO: expose this method in the IPreparedQuery interface
	 */
	public void close()