org.apache.tajo.plan.expr

Class IsNullEval

java.lang.Object

org.apache.tajo.plan.expr.EvalNode

org.apache.tajo.plan.expr.UnaryEval

org.apache.tajo.plan.expr.IsNullEval

All Implemented Interfaces:

Cloneable, ProtoObject<PlanProto.EvalNodeTree>, GsonObject

public class IsNullEval
extends UnaryEval

Field Summary

Fields inherited from class org.apache.tajo.plan.expr.UnaryEval

child

Fields inherited from class org.apache.tajo.plan.expr.EvalNode

type

Constructor Summary

Constructors

Constructor and Description
IsNullEval(boolean not, EvalNode predicand)

Method Summary

Methods

Modifier and Type	Method and Description
Object	clone()
boolean	equals(Object obj)
Datum	eval(Schema schema, Tuple tuple)
String	getName()
TajoDataTypes.DataType	getValueType()
boolean	isNot()
String	toString()

Methods inherited from class org.apache.tajo.plan.expr.UnaryEval

childNum, getChild, getChild, hashCode, postOrder, preOrder, setChild

Methods inherited from class org.apache.tajo.plan.expr.EvalNode

getProto, getType, toJson

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

IsNullEval

public IsNullEval(boolean not,
          EvalNode predicand)

Method Detail

getValueType

public TajoDataTypes.DataType getValueType()

Overrides:

getValueType in class UnaryEval

getName

public String getName()

Overrides:

getName in class UnaryEval

toString

public String toString()

Overrides:

toString in class Object

eval

public Datum eval(Schema schema,
         Tuple tuple)

Overrides:

eval in class UnaryEval

isNot

public boolean isNot()

equals

public boolean equals(Object obj)

Overrides:

equals in class UnaryEval

clone

public Object clone()
             throws CloneNotSupportedException

Overrides:

clone in class UnaryEval

Throws:

CloneNotSupportedException