org.apache.pig.builtin

Class AlgebraicDoubleMathBase.Final

java.lang.Object

org.apache.pig.EvalFunc<T>

org.apache.pig.builtin.AlgebraicMathBase.Final<java.lang.Double>

org.apache.pig.builtin.AlgebraicDoubleMathBase.Final

All Implemented Interfaces:

AlgebraicMathBase.KnownOpProvider

Direct Known Subclasses:

DoubleMax.Final, DoubleMin.Final, DoubleSum.Final

Enclosing class:

AlgebraicDoubleMathBase

public abstract static class AlgebraicDoubleMathBase.Final
extends AlgebraicMathBase.Final<java.lang.Double>

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.pig.EvalFunc

EvalFunc.SchemaType

Field Summary

Fields inherited from class org.apache.pig.EvalFunc

log, pigLogger, reporter, returnType

Constructor Summary

Constructors

Constructor and Description
Final()

Method Summary

Modifier and Type	Method and Description
java.lang.Double	exec(Tuple input) This callback method must be implemented by all subclasses.

Methods inherited from class org.apache.pig.EvalFunc

addCredentials, allowCompileTimeCalculation, finish, getArgToFuncMapping, getCacheFiles, getInputSchema, getLoadCaster, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, needEndOfAllInputProcessing, outputSchema, progress, setEndOfAllInput, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.pig.builtin.AlgebraicMathBase.KnownOpProvider

getOp

Constructor Detail

Final

public Final()

Method Detail

exec

public java.lang.Double exec(Tuple input)
                      throws java.io.IOException

Description copied from class: EvalFunc

This callback method must be implemented by all subclasses. This is the method that will be invoked on every Tuple of a given dataset. Since the dataset may be divided up in a variety of ways the programmer should not make assumptions about state that is maintained between invocations of this method.

Specified by:

exec in class EvalFunc<java.lang.Double>

Parameters:

input - the Tuple to be processed.

Returns:

result, of type T.

Throws:

java.io.IOException