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.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/adapter/ModelDteApiAdapter.java
if ( modelDataSet instanceof OdaDataSetHandle )
		{
			elmtIter = modelDataSet.resultSetIterator( );
			if ( elmtIter != null )
			{
				while ( elmtIter.hasNext( ) )
				{
					OdaResultSetColumnHandle modelColumn = (OdaResultSetColumnHandle) elmtIter.next( );
					if ( !modelColumn.getColumnName( )
							.equals( modelColumn.getNativeName( ) ) )
						dteDataSet.addResultSetHint( newColumnDefn( (ResultSetColumnHandle) modelColumn ) );
				}
			}
		}
		else
		{
			elmtIter = modelDataSet.resultSetHintsIterator( );
			if ( elmtIter != null )
			{
				while ( elmtIter.hasNext( ) )
				{
					ResultSetColumnHandle modelColumn = (ResultSetColumnHandle) elmtIter.next( );
					dteDataSet.addResultSetHint( newColumnDefn( modelColumn ) );
				}
			}
		}