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 Summary

void	processHeadlessEvents(List<EventObject> headless) Process a list of events that have been collected earlier.
List<EventObject>	retrieveHeadlessEvents() Get the list of events processed in headless mode.

Method Detail

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.