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.ui/src/org/eclipse/birt/report/designer/internal/ui/util/DataUtil.java
if ( dataSetDesign != null )
		{
			QueryDefinition defn = new QueryDefinition( null );
			defn.setDataSetName( dataSetDesign.getName( ) );
			if ( rowsToReturn > 0 )
			{
				defn.setMaxRows( rowsToReturn );
			}
			List parameters = dataSetDesign.getParameters( );
			Iterator iter = parameters.iterator( );
			while ( iter.hasNext( ) )
			{
				ParameterDefinition paramDefn = (ParameterDefinition) iter.next( );
				if ( paramDefn.isInputMode( ) )
				{
					if ( paramDefn.getDefaultInputValue( ) != null )
					{
						InputParameterBinding binding = new InputParameterBinding( paramDefn.getName( ),
								new ScriptExpression( paramDefn.getDefaultInputValue( )
										.toString( ) ) );
						defn.addInputParamBinding( binding );
					}
				}
			}
			return defn;
		}
		return null;
	}
}