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org.apache.crunch.lib.join
Interface JoinStrategy<K,U,V>

All Superinterfaces:

Serializable

All Known Implementing Classes:

BloomFilterJoinStrategy, DefaultJoinStrategy, MapsideJoinStrategy, ShardedJoinStrategy

public interface JoinStrategy<K,U,V>
extends Serializable

Defines a strategy for joining two PTables together on a common key.

Method Summary

PTable<K,Pair<U,V>>

join(PTable<K,U> left, PTable<K,V> right, JoinType joinType) Join two tables with the given join type.

Method Detail

join

PTable<K,Pair<U,V>> join(PTable<K,U> left,
                         PTable<K,V> right,
                         JoinType joinType)

Join two tables with the given join type.

Parameters:

left - left table to be joined

right - right table to be joined

joinType - type of join to perform

Returns:

joined tables