Created
October 31, 2020 19:37
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package pl.wiadrodanych.demo.extensions | |
import org.apache.spark.sql._ | |
import org.apache.spark.sql.functions._ | |
import pl.wiadrodanych.demo.base.SparkJob.spark.implicits._ | |
object GroceryDataFrameExtensions { | |
implicit class RichDataFrame(df: DataFrame) { | |
def sumByNormalizedName: DataFrame = { | |
val sumOfFruits = df | |
.groupBy("normalized_name") | |
.agg( | |
sum(($"quantity")).as("sum") | |
) | |
sumOfFruits | |
} | |
def addNormalizedNameColumn: DataFrame = { | |
val normalizedFruits = df.withColumn("normalized_name", lower($"name")) | |
normalizedFruits | |
} | |
def filterFruits: DataFrame = { | |
val fruits = df.filter($"type" === "fruit") | |
fruits | |
} | |
} | |
} |
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