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
slotID = RowHandle.CONTENT_SLOT;
		}
		else if ( parent instanceof GridHandle )
		{
			slotID = GridHandle.ROW_SLOT;
		}
		else if ( parent instanceof ThemeHandle )
		{
			slotID = ThemeHandle.STYLES_SLOT;
		}
		return slotID;
	}
	/**
	 * Get the slot id of child
	 * 
	 * @param parent
	 * @param child
	 * @return slot ID
	 */
	public static int findSlotID( Object parent, Object child )
	{
		assert parent instanceof DesignElementHandle;
		assert child instanceof DesignElementHandle;
		int slotID = ( (DesignElementHandle) parent ).findContentSlot( (DesignElementHandle) child );
		return slotID;
	}
	/**
	 * Get the slot id of child If the slot id was not found, returns the
	 * default slot id
	 *