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
Object arg = iterator.next( );
						if ( argIndex == i )
						{
							return ( (IArgumentInfo) arg ).getType( );
						}
					}
				}
				return null;
			}
		}
		return null;
	}
	/**
	 * Get a DesignElementHandle's method's all arguments.
	 * 
	 * @param handle
	 * @param methodName
	 * @return Arguments map, key is argument name, value is argument type.
	 */
	public static Map getDesignElementMethodArguments(
			DesignElementHandle handle, String methodName )
	{
		List methods = handle.getDefn( ).getMethods( );