ChartDataCache (JPPF)

java.lang.Object

org.jppf.ui.monitoring.charts.ChartDataCache

public final class ChartDataCache extends Object

A cache for charts data, implemented as a singleton.

Author:: Laurent Cohen

Method Summary

Modifier and Type

Method

Description

void

addFields(Fields[] fields, StatsHandler handler)

Add the specified fields.

Map<Fields,List<Double>>

getData(Fields[] fields)

Get the available data for the specified fields.

static ChartDataCache

getInstance()

void

removeFields(Fields[] fields)

Remove fields that are no longer used.

void

update(StatsHandler handler)

Update the values of the fields.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details
- getInstance
  
  public static ChartDataCache getInstance()
  
  Returns:
  
  the singleton instance of this class.
- addFields
  
  public void addFields(Fields[] fields, StatsHandler handler)
  
  Add the specified fields.
  
  Parameters:
  
  fields - the fields to add..
  
  handler - holds the updated data.
- removeFields
  
  public void removeFields(Fields[] fields)
  
  Remove fields that are no longer used.
  
  Parameters:
  
  fields - the fields to add.
- update
  
  public void update(StatsHandler handler)
  
  Update the values of the fields.
  
  Parameters:
  
  handler - holds the updated data.
- getData
  
  public Map<Fields,List<Double>> getData(Fields[] fields)
  
  Get the available data for the specified fields.
  
  Parameters:
  
  fields - the fields for which to get data.
  
  Returns:
  
  a mapping of fields to the associated data.