org.apache.tajo.plan.expr

Class AggregationFunctionCallEval

java.lang.Object

org.apache.tajo.plan.expr.EvalNode

org.apache.tajo.plan.expr.FunctionEval

org.apache.tajo.plan.expr.AggregationFunctionCallEval

All Implemented Interfaces:

Cloneable, ProtoObject<PlanProto.EvalNodeTree>, GsonObject

Direct Known Subclasses:

WindowFunctionEval

public class AggregationFunctionCallEval
extends FunctionEval
implements Cloneable

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.tajo.plan.expr.FunctionEval

FunctionEval.ParamType

Field Summary

Fields

Modifier and Type	Field and Description
protected AggFunction	instance

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

argEvals, funcDesc

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

type

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AggregationFunctionCallEval(EvalType type, FunctionDesc desc, AggFunction instance, EvalNode[] givenArgs)
	AggregationFunctionCallEval(FunctionDesc desc, AggFunction instance, EvalNode[] givenArgs)

Method Summary

Methods

Modifier and Type	Method and Description
Object	clone()
boolean	equals(Object obj)
Datum	eval(Schema schema, Tuple tuple)
String	getAlias()
TajoDataTypes.DataType	getValueType()
boolean	hasAlias()
boolean	isFinalPhase()
boolean	isIntermediatePhase()
void	merge(FunctionContext context, Schema schema, Tuple tuple)
FunctionContext	newContext()
void	setAlias(String alias)
void	setFinalPhase()
void	setFinalPhase(boolean flag)
void	setFirstPhase()
void	setIntermediatePhase()
void	setIntermediatePhase(boolean flag)
Datum	terminate(FunctionContext context)

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

childNum, getArgs, getChild, getFuncDesc, getName, getParamType, hashCode, isDistinct, postOrder, preOrder, setArg, setArgs, 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

Field Detail

instance

protected AggFunction instance

Constructor Detail

AggregationFunctionCallEval

protected AggregationFunctionCallEval(EvalType type,
                           FunctionDesc desc,
                           AggFunction instance,
                           EvalNode[] givenArgs)

AggregationFunctionCallEval

public AggregationFunctionCallEval(FunctionDesc desc,
                           AggFunction instance,
                           EvalNode[] givenArgs)

Method Detail

newContext

public FunctionContext newContext()

merge

public void merge(FunctionContext context,
         Schema schema,
         Tuple tuple)

eval

public Datum eval(Schema schema,
         Tuple tuple)

Specified by:

eval in class FunctionEval

terminate

public Datum terminate(FunctionContext context)

getValueType

public TajoDataTypes.DataType getValueType()

Overrides:

getValueType in class FunctionEval

hasAlias

public boolean hasAlias()

setAlias

public void setAlias(String alias)

getAlias

public String getAlias()

clone

public Object clone()
             throws CloneNotSupportedException

Overrides:

clone in class FunctionEval

Throws:

CloneNotSupportedException

isIntermediatePhase

public boolean isIntermediatePhase()

setIntermediatePhase

public void setIntermediatePhase(boolean flag)

setFinalPhase

public void setFinalPhase(boolean flag)

isFinalPhase

public boolean isFinalPhase()

setFirstPhase

public void setFirstPhase()

setFinalPhase

public void setFinalPhase()

setIntermediatePhase

public void setIntermediatePhase()

equals

public boolean equals(Object obj)

Overrides:

equals in class FunctionEval