io.delta.standalone.expressions

Class IsNull

Object

io.delta.standalone.expressions.UnaryExpression

io.delta.standalone.expressions.IsNull

All Implemented Interfaces:

Expression, Predicate

public final class IsNull
extends UnaryExpression
implements Predicate

Evaluates if expr is null for new IsNull(expr).

Constructor Summary

Constructors

Constructor and Description
IsNull(Expression child)

Method Summary

Modifier and Type	Method and Description
Object	eval(RowRecord record)
String	toString()

Methods inherited from class io.delta.standalone.expressions.UnaryExpression

children, equals, getChild, hashCode

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface io.delta.standalone.expressions.Predicate

dataType

Methods inherited from interface io.delta.standalone.expressions.Expression

children, references

Constructor Detail

IsNull

public IsNull(Expression child)

Method Detail

eval

public Object eval(RowRecord record)

Specified by:

eval in interface Expression

Overrides:

eval in class UnaryExpression

Parameters:

record - the input record to evaluate.

Returns:

the result of evaluating this expression on the given input RowRecord.

toString

public String toString()

Specified by:

toString in interface Expression

Overrides:

toString in class Object

Returns:

the String representation of this expression.