org.apache.tajo.plan.function

Class WindowAggFunc<T extends Datum>

java.lang.Object

org.apache.tajo.function.Function<T>

org.apache.tajo.plan.function.AggFunction<T>

org.apache.tajo.plan.function.WindowAggFunc<T>

All Implemented Interfaces:

Cloneable, GsonObject

public abstract class WindowAggFunc<T extends Datum>
extends AggFunction<T>

Field Summary

Fields inherited from class org.apache.tajo.function.Function

definedParams, NoArgs

Constructor Summary

Constructors

Constructor and Description
WindowAggFunc(Column[] definedArgs)

Method Summary

Methods

Modifier and Type	Method and Description
abstract void	eval(FunctionContext ctx, Tuple params)
CatalogProtos.FunctionType	getFunctionType()
Datum	getPartialResult(FunctionContext ctx)
TajoDataTypes.DataType	getPartialResultType()
void	merge(FunctionContext ctx, Tuple part)
abstract FunctionContext	newContext()
abstract T	terminate(FunctionContext ctx)
String	toJson()

Methods inherited from class org.apache.tajo.function.Function

clone, equals, hashCode

Methods inherited from class java.lang.Object

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

Constructor Detail

WindowAggFunc

public WindowAggFunc(Column[] definedArgs)

Method Detail

newContext

public abstract FunctionContext newContext()

Specified by:

newContext in class AggFunction<T extends Datum>

eval

public abstract void eval(FunctionContext ctx,
        Tuple params)

Specified by:

eval in class AggFunction<T extends Datum>

merge

public void merge(FunctionContext ctx,
         Tuple part)

Overrides:

merge in class AggFunction<T extends Datum>

getPartialResult

public Datum getPartialResult(FunctionContext ctx)

Specified by:

getPartialResult in class AggFunction<T extends Datum>

getPartialResultType

public TajoDataTypes.DataType getPartialResultType()

Specified by:

getPartialResultType in class AggFunction<T extends Datum>

terminate

public abstract T terminate(FunctionContext ctx)

Specified by:

terminate in class AggFunction<T extends Datum>

toJson

public String toJson()

Specified by:

toJson in interface GsonObject

Overrides:

toJson in class AggFunction<T extends Datum>

getFunctionType

public CatalogProtos.FunctionType getFunctionType()

Overrides:

getFunctionType in class AggFunction<T extends Datum>