EmptyJRDataSource (OpenNMS 2022.1.1 API)

java.lang.Object
- org.opennms.netmgt.jasper.measurement.EmptyJRDataSource

All Implemented Interfaces:

net.sf.jasperreports.engine.JRDataSource, net.sf.jasperreports.engine.JRRewindableDataSource
```
public class EmptyJRDataSource
extends Object
implements net.sf.jasperreports.engine.JRRewindableDataSource
```
An empty or nullable data source implementation.

Constructor Summary

Constructors
Constructor Description

EmptyJRDataSource()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`getFieldValue(net.sf.jasperreports.engine.JRField jrField)`
`void`	`moveFirst()`
`boolean`	`next()`

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

- Constructor Detail
  - EmptyJRDataSource
```
public EmptyJRDataSource()
```
- Method Detail
  - getFieldValue
```
public Object getFieldValue(net.sf.jasperreports.engine.JRField jrField)
                     throws net.sf.jasperreports.engine.JRException
```
    Specified by:
    
    getFieldValue in interface net.sf.jasperreports.engine.JRDataSource
    
    Throws:
    
    net.sf.jasperreports.engine.JRException
  - next
```
public boolean next()
             throws net.sf.jasperreports.engine.JRException
```
    Specified by:
    
    next in interface net.sf.jasperreports.engine.JRDataSource
    
    Throws:
    
    net.sf.jasperreports.engine.JRException
  - moveFirst
```
public void moveFirst()
               throws net.sf.jasperreports.engine.JRException
```
    Specified by:
    
    moveFirst in interface net.sf.jasperreports.engine.JRRewindableDataSource
    
    Throws:
    
    net.sf.jasperreports.engine.JRException