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
* 
	 * @param handle
	 * @param targetUnit
	 * @return
	 */
	public static double convertToValue( DimensionHandle handle,
			String targetUnit )
	{
		double retValue = 0.0;
		if ( handle.isSet( ) )
		{
			retValue = DimensionUtil.convertTo( handle.getMeasure( ),
					handle.getUnits( ),
					targetUnit ).getMeasure( );
		}
		return retValue;
	}
	/**
	 * Checks if the value can be converted to a valid Integer.
	 * 
	 * @param val
	 * @return true if the value can be converted to a valid Integer, else
	 *         false.
	 */
	public static boolean isValidInteger( String val )
	{
		try
		{
			Integer.parseInt( val );
		}