org.apache.tajo.plan.expr

Class WindowFunctionEval

java.lang.Object

org.apache.tajo.plan.expr.EvalNode

org.apache.tajo.plan.expr.FunctionEval

org.apache.tajo.plan.expr.AggregationFunctionCallEval

org.apache.tajo.plan.expr.WindowFunctionEval

All Implemented Interfaces:

Cloneable, ProtoObject<PlanProto.EvalNodeTree>, GsonObject

public class WindowFunctionEval
extends AggregationFunctionCallEval
implements Cloneable

Nested Class Summary

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

FunctionEval.ParamType

Field Summary

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

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

Constructor and Description
WindowFunctionEval(FunctionDesc desc, AggFunction instance, EvalNode[] givenArgs, WindowSpec.WindowFrame windowFrame)

Method Summary

Methods

Modifier and Type	Method and Description
Object	clone()
boolean	equals(Object obj)
Datum	eval(Schema schema, Tuple tuple)
SortSpec[]	getSortSpecs()
TajoDataTypes.DataType	getValueType()
WindowSpec.WindowFrame	getWindowFrame()
boolean	hasSortSpecs()
void	merge(FunctionContext context, Schema schema, Tuple tuple)
void	setSortSpecs(SortSpec[] sortSpecs)
Datum	terminate(FunctionContext context)
String	toString()

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

getAlias, hasAlias, isFinalPhase, isIntermediatePhase, newContext, setAlias, setFinalPhase, setFinalPhase, setFirstPhase, setIntermediatePhase, setIntermediatePhase

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

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

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

WindowFunctionEval

public WindowFunctionEval(FunctionDesc desc,
                  AggFunction instance,
                  EvalNode[] givenArgs,
                  WindowSpec.WindowFrame windowFrame)

Method Detail

hasSortSpecs

public boolean hasSortSpecs()

setSortSpecs

public void setSortSpecs(SortSpec[] sortSpecs)

getSortSpecs

public SortSpec[] getSortSpecs()

getWindowFrame

public WindowSpec.WindowFrame getWindowFrame()

eval

public Datum eval(Schema schema,
         Tuple tuple)

Overrides:

eval in class AggregationFunctionCallEval

merge

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

Overrides:

merge in class AggregationFunctionCallEval

terminate

public Datum terminate(FunctionContext context)

Overrides:

terminate in class AggregationFunctionCallEval

getValueType

public TajoDataTypes.DataType getValueType()

Overrides:

getValueType in class AggregationFunctionCallEval

equals

public boolean equals(Object obj)

Overrides:

equals in class AggregationFunctionCallEval

clone

public Object clone()
             throws CloneNotSupportedException

Overrides:

clone in class AggregationFunctionCallEval

Throws:

CloneNotSupportedException

toString

public String toString()

Overrides:

toString in class FunctionEval