Package com.google.refine.grel.controls

Class IsNull

java.lang.Object

com.google.refine.grel.controls.IsNull

All Implemented Interfaces:

Control

public class IsNull
extends Object

Constructor Summary

Constructors

Constructor	Description
IsNull()

Method Summary

Modifier and Type	Method	Description
Object	call(Properties bindings, Evaluable[] args)
String	checkArguments(Evaluable[] args)
String	getDescription()
String	getParams()
String	getReturns()
protected boolean	test(Object o)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

IsNull

public IsNull()

Method Details

getDescription

public String getDescription()

test

protected boolean test(Object o)

checkArguments

public String checkArguments(Evaluable[] args)

Specified by:

checkArguments in interface Control

call

public Object call(Properties bindings,
 Evaluable[] args)

Specified by:

call in interface Control

getParams

public String getParams()

Specified by:

getParams in interface Control

getReturns

public String getReturns()

Specified by:

getReturns in interface Control