org.apache.nifi.attribute.expression.language.evaluation.functions

Class IsNullEvaluator

java.lang.Object

org.apache.nifi.attribute.expression.language.evaluation.BooleanEvaluator

org.apache.nifi.attribute.expression.language.evaluation.functions.IsNullEvaluator

All Implemented Interfaces:

Evaluator<Boolean>

public class IsNullEvaluator
extends BooleanEvaluator

Field Summary

Fields

Modifier and Type	Field and Description
private Evaluator<?>	subject

Constructor Summary

Constructors

Constructor and Description
IsNullEvaluator(Evaluator<?> subject)

Method Summary

Modifier and Type	Method and Description
QueryResult<Boolean>	evaluate(EvaluationContext evaluationContext)
Evaluator<?>	getSubjectEvaluator()

Methods inherited from class org.apache.nifi.attribute.expression.language.evaluation.BooleanEvaluator

getEvaluationsRemaining, getResultType, getToken, setToken

Methods inherited from class java.lang.Object

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

Field Detail

subject

private final Evaluator<?> subject

Constructor Detail

IsNullEvaluator

public IsNullEvaluator(Evaluator<?> subject)

Method Detail

evaluate

public QueryResult<Boolean> evaluate(EvaluationContext evaluationContext)

getSubjectEvaluator

public Evaluator<?> getSubjectEvaluator()