Bug 142462 Cannot create bindings for data set output parameters
Define a JDBC Stored Procedure data set with at least one data set output parameter. Bind this data set to a table. Edit data binding for the table and add a new binding. In the expression builder, under "Available Data Sets", only the columns for the data set are shown as available. The output parameters are not shown. This is a regression against 2.0. This bug makes data set parameters unusable.
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
else if ( DesignChoiceConstants.UNITS_PERCENTAGE.equals( units ) )
		{
			px = DimensionUtil.convertTo( measure * fontSize / 100,
					DesignChoiceConstants.UNITS_PT,
					DesignChoiceConstants.UNITS_IN ).getMeasure( );
		}
		
		else if ( "".equals( units ) ) 
		{
			units = SessionHandleAdapter.getInstance( )
					.getReportDesignHandle( )
					.getDefaultUnits( );
			px = DimensionUtil.convertTo( measure,
					units,
					DesignChoiceConstants.UNITS_IN ).getMeasure( );
		}
		else if ( units == null )
		{
			px = 0.0;
		}
		else
		{
			px = DimensionUtil.convertTo( measure,
					units,
					DesignChoiceConstants.UNITS_IN ).getMeasure( );
		}
		return MetricUtility.inchToPixel( px );
	}
	/**
	 * Transform other units to target unit.