eu.stratosphere.core.testing

Interface KeyExtractor<T>

All Known Implementing Classes:

RecordKeyExtractor

public interface KeyExtractor<T>

A general means to extract the keys from a given record.

Method Summary

Methods

Modifier and Type	Method and Description
void	fill(Comparable<?>[] keys, T record) Copies the keys from the given record into the provided keys array.s
int	getNumKeys()

Method Detail

fill

void fill(Comparable<?>[] keys,
        T record)

Copies the keys from the given record into the provided keys array.s

Parameters:

keys -

record -

getNumKeys

int getNumKeys()

Returns:

the number of keys