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
List mergedFilters = new ArrayList( );
			    
			    if ( dataSet.getFilters( ) != null )
				{
					mergedFilters.addAll( dataSet.getFilters( ) );
				}
			    
			    if ( queryDefn.getFilters( ) != null )
				{
					mergedFilters.addAll( queryDefn.getFilters( ) );
				}
			   		   			    
			    if ( mergedFilters.size() > 0 )
			    {
			    	IResultObjectEvent objectEvent = new FilterByRow( mergedFilters, 
			    			dataSet );
			    	odiQuery.addOnFetchEvent( objectEvent );
			    }
			    
				
			    odiQuery.setMaxRows( queryDefn.getMaxRows() );
			}
			finally
			{
				Context.exit();
			}
		}
		/**