Package weka.gui.beans

Interface HeadlessEventCollector

All Known Implementing Classes:
AttributeSummarizer, CostBenefitAnalysis, DataVisualizer, ModelPerformanceChart, ScatterPlotMatrix, TextViewer
public interface HeadlessEventCollector
Interface for Knowledge Flow components that (typically) provide an interactive graphical visualization to implement. This allows events that would normally be processed to provide a graphical display to be collected and retrieved when running in headless mode (perhaps on a server for example). A copy of the component that is running with access to a display can be passed the list of events in order to construct its display-dependent output.
Version:
$Revision: 8034 $
Author:
Mark Hall (mhall{[at]}pentaho{[dot]}com).

  • Method Details

    • retrieveHeadlessEvents

      List<EventObject> retrieveHeadlessEvents()
      Get the list of events processed in headless mode. May return null or an empty list if not running in headless mode or no events were processed
      Returns:
      a list of EventObjects or null.

    • processHeadlessEvents

      void processHeadlessEvents(List<EventObject> headless)
      Process a list of events that have been collected earlier. Has no affect if the component is running in headless mode.
      Parameters:
      headless - a list of EventObjects to process.