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org.apache.crunch.lib.sort
Class SortFns.KeyExtraction<V extends Tuple>

java.lang.Object
  org.apache.crunch.lib.sort.SortFns.KeyExtraction<V>

Enclosing class:

SortFns

public static class SortFns.KeyExtraction<V extends Tuple>
extends Object

Utility class for encapsulating key extraction logic and serialization information about key extraction.

Constructor Summary

SortFns.KeyExtraction(PType<V> ptype, Sort.ColumnOrder[] columnOrder)

Method Summary

MapFn<V,Object>	getByFn()
PType<Object>	getKeyType()

Methods inherited from class java.lang.Object

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

Constructor Detail

SortFns.KeyExtraction

public SortFns.KeyExtraction(PType<V> ptype,
                             Sort.ColumnOrder[] columnOrder)

Method Detail

getByFn

public MapFn<V,Object> getByFn()

getKeyType

public PType<Object> getKeyType()