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
IBaseTransform groupDefn;
				if ( i == 0 )
					groupDefn = queryDefn;
				else
				{
					groupDefn = (IGroupDefinition) groups.get( i - 1 );
					
					
					
					
				}
				prepareGroup( groupDefn, i, cx );
			}			
			
		}
		finally
		{
		    Context.exit();
		}
	} 
	/**
	 * Return the QueryResults. But the execution of query would be deferred
	 * 
	 * @param outerResults
	 *            If query is nested within another query, this is the outer
	 *            query's query result handle.
	 * @param scope
	 *            The ElementState object for the report item using the query;
	 *            this acts as the JS scope for evaluating script expressions.