org.apache.pig.piggybank.evaluation.string
Class HashFNV1

java.lang.Object
  org.apache.pig.EvalFunc<Long>
      org.apache.pig.piggybank.evaluation.string.HashFNV
          org.apache.pig.piggybank.evaluation.string.HashFNV1

public class HashFNV1
extends HashFNV

Implementation for HashFNV which takes 1 parameter

Field Summary

Fields inherited from class org.apache.pig.EvalFunc

log, pigLogger, reporter, returnType

Constructor Summary

HashFNV1()

Method Summary

Long	exec(Tuple input) This callback method must be implemented by all subclasses.

Methods inherited from class org.apache.pig.piggybank.evaluation.string.HashFNV

getArgToFuncMapping, outputSchema

Methods inherited from class org.apache.pig.EvalFunc

finish, getCacheFiles, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, isAsynchronous, progress, setPigLogger, setReporter, warn

Methods inherited from class java.lang.Object

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

Constructor Detail

HashFNV1

public HashFNV1()

Method Detail

exec

public Long exec(Tuple input)
          throws 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.

Overrides:

exec in class HashFNV

Parameters:

input - the Tuple to be processed.

Returns:

result, of type T.

Throws:

IOException