SumDiffPenDatasource

java.lang.Object
- com.inductiveautomation.factorypmi.application.components.chart.easychart.AbstractCalculatedPenDatasource
- - com.inductiveautomation.factorypmi.application.components.chart.easychart.AbstractFunctionPenDatasource
  - - com.inductiveautomation.factorypmi.application.components.chart.easychart.SumDiffPenDatasource

All Implemented Interfaces:

IPenDatasource, java.util.EventListener, javax.swing.event.ChangeListener
```
public class SumDiffPenDatasource
extends AbstractFunctionPenDatasource
```
Filename - SumPensDatasource Author: Perry Arellano-Jones Year: 2014
This datasource adds or subtracts the value of two pens and returns a dataset of the result. It requires two pens to be specified, a 'driving' Pen and a 'secondary' pen. Results are derived by adding to or subtracting from to the driving Pen. Utilizes the PenAttribute#FUNCTION_PARAM to determine whether summation or negation is done on the driving pen.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class SumDiffPenDatasource.SumDiffPenFunctionFactory

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String DIFF

static java.lang.String SUM
- Fields inherited from class com.inductiveautomation.factorypmi.application.components.chart.easychart.AbstractFunctionPenDatasource
  referencedPens
- Fields inherited from class com.inductiveautomation.factorypmi.application.components.chart.easychart.AbstractCalculatedPenDatasource
  chart, dataset, datasets, endDate, log, pens, startDate

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected Dataset`	`createDataset()`	Called when the dataset needs to be re-calculated
`void`	`initRefs(java.util.Map<java.lang.String,PenData> allPens)`	Gives the datasource a chance to install references to other pens

Methods inherited from class com.inductiveautomation.factorypmi.application.components.chart.easychart.AbstractFunctionPenDatasource
stateChanged

Methods inherited from class com.inductiveautomation.factorypmi.application.components.chart.easychart.AbstractCalculatedPenDatasource
addPen, getDataset, getMillisRange, getNumDatapoints, isZoomTracking, setDataset, setDatasetLater, shutdown, startup, warn

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

- Field Detail
  - SUM
```
public static final java.lang.String SUM
```
    See Also:
    
    Constant Field Values
  - DIFF
```
public static final java.lang.String DIFF
```
    See Also:
    
    Constant Field Values
- Method Detail
  - createDataset
```
protected Dataset createDataset()
```
    Description copied from class: AbstractFunctionPenDatasource
    
    Called when the dataset needs to be re-calculated
    
    Specified by:
    
    createDataset in class AbstractFunctionPenDatasource
  - initRefs
```
public void initRefs(java.util.Map<java.lang.String,PenData> allPens)
```
    Description copied from interface: IPenDatasource
    
    Gives the datasource a chance to install references to other pens
    
    Specified by:
    
    initRefs in interface IPenDatasource
    
    Overrides:
    
    initRefs in class AbstractFunctionPenDatasource