Bug 151535 Parameters are invisable in Joint Dataset
Trying to use "Joint Dataset" combined with parameters within underlaying Data-Sets (neccessary to achive a filtering where clause for a DateTime Field) Parameter editing ( e.g. in Chart designer) do not show the entire parameter. As specified it should show and let to edit a combination of both underlaying datasets' parameters.
data/org.eclipse.birt.report.data.adapter/src/org/eclipse/birt/report/data/adapter/internal/adapter/DataAdapterUtil.java
{
					ResultSetColumnHandle modelColumn = (ResultSetColumnHandle) elmtIter.next( );
					dteDataSet.addResultSetHint( new ColumnAdapter( modelColumn ) );
				}
			}
		}
		
		
		elmtIter = modelDataSet.columnHintsIterator( );
		if ( elmtIter != null )
		{
			List columnDefns = dteDataSet.getResultSetHints( );
			while ( elmtIter.hasNext( ) )
			{
				ColumnHintHandle modelColumnHint = ( ColumnHintHandle ) elmtIter
						.next( );
				ColumnDefinition existDefn = findColumnDefn( columnDefns,
						modelColumnHint.getColumnName( ) );
				if ( existDefn != null )
					updateColumnDefn( existDefn, modelColumnHint );
				else
					dteDataSet
							.addResultSetHint( new ColumnAdapter( modelColumnHint ) );
			}
		}
	}
	
	public static void updateColumnDefn( ColumnDefinition dteColumn,
			ColumnHintHandle modelColumnHint )
	{