Bug 147977 Chart editor does not use container's column bindings
1) create data source 2) create data set: select * from customers 3) create table 4) bind country, customer name to table 5) group by country 6) create a binding for total_by_country which aggregates # of customers in each country. put a data element in group footer and bind to total_by_country 7) in group header put chart 8) in data tab specify inherit from container Result: You see columns for report data set created in step 2. Expected Result: Just 3 columns for the 3 bindings created in 4 and 6.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/document/GroupDefnUtil.java
IOUtil.writeString( dos, groupDefn.getName( ) );
				IOUtil.writeString( dos, groupDefn.getKeyColumn( ) );
				IOUtil.writeString( dos, groupDefn.getKeyExpression( ) );
				IOUtil.writeInt( dos, groupDefn.getInterval( ) );
				IOUtil.writeDouble( dos, groupDefn.getIntervalRange( ) );
				IOUtil.writeInt( dos, groupDefn.getSortDirection( ) );
				FilterDefnUtil.saveFilterDefn( dos, groupDefn.getFilters( ) );
				QueryDefnUtil.saveSorts( dos, groupDefn.getSorts( ) );
				QueryDefnUtil.saveSubQuery( dos, groupDefn.getSubqueries( ) );
			}
			
			dos.flush( );
		}
		catch ( IOException e )
		{
			throw new DataException( ResourceConstants.RD_SAVE_ERROR, e );
		}
	}
	
	/**
	 * @param inputStream
	 * @return
	 * @throws DataException 
	 */
	static List loadGroupDefn( InputStream inputStream )
			throws DataException
	{
		List groupList = new ArrayList( );
		DataInputStream dis = new DataInputStream( inputStream );
		try