datafu.org.apache.pig.piggybank.evaluation

Class ExtremalTupleByNthField.HelperClass

java.lang.Object

org.apache.pig.EvalFunc<org.apache.pig.data.Tuple>

datafu.org.apache.pig.piggybank.evaluation.ExtremalTupleByNthField.HelperClass

Enclosing class:

ExtremalTupleByNthField

public static final class ExtremalTupleByNthField.HelperClass
extends org.apache.pig.EvalFunc<org.apache.pig.data.Tuple>

Utility classes and methods

Nested Class Summary

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

org.apache.pig.EvalFunc.SchemaType

Field Summary

Fields inherited from class org.apache.pig.EvalFunc

log, pigLogger, reporter, returnType

Constructor Summary

Constructors

Constructor and Description
HelperClass()
HelperClass(java.lang.String fieldIndexString)
HelperClass(java.lang.String fieldIndexString, java.lang.String order)

Method Summary

Modifier and Type	Method and Description
org.apache.pig.data.Tuple	exec(org.apache.pig.data.Tuple input)

Methods inherited from class org.apache.pig.EvalFunc

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

Methods inherited from class java.lang.Object

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

Constructor Detail

HelperClass

public HelperClass()
            throws org.apache.pig.backend.executionengine.ExecException

Throws:

org.apache.pig.backend.executionengine.ExecException

HelperClass

public HelperClass(java.lang.String fieldIndexString)
            throws org.apache.pig.backend.executionengine.ExecException

Throws:

org.apache.pig.backend.executionengine.ExecException

HelperClass

public HelperClass(java.lang.String fieldIndexString,
                   java.lang.String order)
            throws org.apache.pig.backend.executionengine.ExecException

Throws:

org.apache.pig.backend.executionengine.ExecException

Method Detail

exec

public org.apache.pig.data.Tuple exec(org.apache.pig.data.Tuple input)
                               throws java.io.IOException

Specified by:

exec in class org.apache.pig.EvalFunc<org.apache.pig.data.Tuple>

Throws:

java.io.IOException