com.cloudera.crunch.lib
Class Join

java.lang.Object
  com.cloudera.crunch.lib.Join

public class Join
extends Object

Utilities for joining multiple PTable instances based on a common key.

Constructor Summary

Join()

Method Summary

static <K,U,V> PTable<K,Pair<U,V>>	innerJoin(PTable<K,U> left, PTable<K,V> right)
static <K,U,V> PTable<K,Pair<U,V>>	join(PTable<K,U> left, PTable<K,V> right)
static <K,U,V> PTable<K,Pair<U,V>>	leftJoin(PTable<K,U> left, PTable<K,V> right)

Methods inherited from class java.lang.Object

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

Constructor Detail

Join

public Join()

Method Detail

join

public static <K,U,V> PTable<K,Pair<U,V>> join(PTable<K,U> left,
                                               PTable<K,V> right)

innerJoin

public static <K,U,V> PTable<K,Pair<U,V>> innerJoin(PTable<K,U> left,
                                                    PTable<K,V> right)

leftJoin

public static <K,U,V> PTable<K,Pair<U,V>> leftJoin(PTable<K,U> left,
                                                   PTable<K,V> right)