de.unknownreality.dataframe.join.impl

Class LeftJoin

java.lang.Object

de.unknownreality.dataframe.join.impl.LeftJoin

All Implemented Interfaces:

JoinOperation

public class LeftJoin
extends Object
implements JoinOperation

Created by Alex on 10.07.2016.

Constructor Summary

Constructors

Constructor and Description
LeftJoin()

Method Summary

Modifier and Type	Method and Description
JoinedDataFrame	join(DataFrame dfA, DataFrame dfB, String joinSuffixA, String joinSuffixB, JoinColumn... joinColumns) Joins two data frames using the LEFT JOIN method

Methods inherited from class java.lang.Object

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

Constructor Detail

LeftJoin

public LeftJoin()

Method Detail

join

public JoinedDataFrame join(DataFrame dfA,
                            DataFrame dfB,
                            String joinSuffixA,
                            String joinSuffixB,
                            JoinColumn... joinColumns)

Joins two data frames using the LEFT JOIN method

Specified by:

join in interface JoinOperation

Parameters:

dfA - first data frame

dfB - second data frame

joinSuffixA - suffix used for columns from the first data frame

joinSuffixB - suffix used for columns from the second data frame

joinColumns - columns used for the join

Returns:

joined data frame