org.apache.tajo.plan.expr

Class ConstEval

java.lang.Object

org.apache.tajo.plan.expr.EvalNode

org.apache.tajo.plan.expr.ConstEval

All Implemented Interfaces:

Cloneable, Comparable<ConstEval>, ProtoObject<PlanProto.EvalNodeTree>, GsonObject

public class ConstEval
extends EvalNode
implements Comparable<ConstEval>, Cloneable

Field Summary

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

type

Constructor Summary

Constructors

Constructor and Description
ConstEval(Datum datum)

Method Summary

Methods

Modifier and Type	Method and Description
int	childNum()
Object	clone()
int	compareTo(ConstEval other)
boolean	equals(Object obj)
Datum	eval(Schema schema, Tuple tuple)
EvalNode	getChild(int idx)
String	getName()
Datum	getValue()
TajoDataTypes.DataType	getValueType()
int	hashCode()
void	postOrder(EvalNodeVisitor visitor)
void	preOrder(EvalNodeVisitor visitor)
String	toString()

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

ConstEval

public ConstEval(Datum datum)

Method Detail

getValue

public Datum getValue()

toString

public String toString()

Overrides:

toString in class Object

eval

public Datum eval(Schema schema,
         Tuple tuple)

Specified by:

eval in class EvalNode

getValueType

public TajoDataTypes.DataType getValueType()

Specified by:

getValueType in class EvalNode

childNum

public int childNum()

Specified by:

childNum in class EvalNode

getChild

public EvalNode getChild(int idx)

Specified by:

getChild in class EvalNode

getName

public String getName()

Specified by:

getName in class EvalNode

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

clone

public Object clone()
             throws CloneNotSupportedException

Overrides:

clone in class EvalNode

Throws:

CloneNotSupportedException

compareTo

public int compareTo(ConstEval other)

Specified by:

compareTo in interface Comparable<ConstEval>

preOrder

public void preOrder(EvalNodeVisitor visitor)

Specified by:

preOrder in class EvalNode

postOrder

public void postOrder(EvalNodeVisitor visitor)

Specified by:

postOrder in class EvalNode