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
{
				result = (ReportItemHandle) handle;
			}
			return result;
		}
		return null;
	}
	/**
	 * Return the first DataSetHandle for a report item.
	 * 
	 * If the report item has no DataSetHandle, search for it's container if
	 * container is not a ListingHandle.
	 * 
	 * @param handle
	 *            the ReportItemHandle
	 * @return Available DataSetHandle
	 */
	public static DataSetHandle getFirstDataSet( DesignElementHandle handle )
	{
		DataSetHandle dataSetHandle = null;
		if ( handle instanceof ReportItemHandle )
		{
			dataSetHandle = ( (ReportItemHandle) handle ).getDataSet( );
		}
		if ( dataSetHandle == null )
		{
			for ( DesignElementHandle elementHandle = handle; elementHandle != null; elementHandle = elementHandle.getContainer( ) )
			{
				if ( elementHandle instanceof ListingHandle
						&& ( dataSetHandle = ( (ListingHandle) elementHandle ).getDataSet( ) ) != null )