Bug 192332 Engine does not set values for parameters in a data extraction task
Engine does not set values for parameters in a data extraction task. So if a query binds a paramter, we can not get correct data from document.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/DataExtractionTaskV1.java
if ( rset != null && rset != prset )
				{
					rsets.add( rset );
				}
				prset = rset;
			}
			if ( rset != null )
			{
				rsetName = rset.getID( ).getDataSetName( );
			}
		}
		catch ( BirtException ex )
		{
			logger.log( Level.SEVERE, ex.getLocalizedMessage( ), ex );
		}
		for ( int i = 0; i < rsets.size( ); i++ )
		{
			rset = (IBaseResultSet) rsets.get( i );
			rset.close( );
		}
		if ( rsetName != null )
		{
			return rsetId2Name( rsetName );
		}
		return rsetName;
	}
	/**
	 * get the resultset id from the query id.
	 * 
	 * @param id