[
https://issues.apache.org/jira/browse/SPARK-27297?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Takuya Ueshin reassigned SPARK-27297:
-------------------------------------
Assignee: Nikolas Vanderhoof
> Add higher order functions to Scala API
> ---------------------------------------
>
> Key: SPARK-27297
> URL: https://issues.apache.org/jira/browse/SPARK-27297
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Nikolas Vanderhoof
> Assignee: Nikolas Vanderhoof
> Priority: Major
>
> There is currently no existing Scala API equivalent for the higher order
> functions introduced in Spark 2.4.0.
> * transform
> * aggregate
> * filter
> * exists
> * zip_with
> * map_zip_with
> * map_filter
> * transform_values
> * transform_keys
> Equivalent column based functions should be added to the Scala API for
> org.apache.spark.sql.functions with the following signatures:
>
> {code:scala}
> def transform(column: Column, f: Column => Column): Column = ???
> def transform(column: Column, f: (Column, Column) => Column): Column = ???
> def exists(column: Column, f: Column => Column): Column = ???
> def filter(column: Column, f: Column => Column): Column = ???
> def aggregate(
> expr: Column,
> zero: Column,
> merge: (Column, Column) => Column,
> finish: Column => Column): Column = ???
> def aggregate(
> expr: Column,
> zero: Column,
> merge: (Column, Column) => Column): Column = ???
> def zip_with(
> left: Column,
> right: Column,
> f: (Column, Column) => Column): Column = ???
> def transform_keys(expr: Column, f: (Column, Column) => Column): Column = ???
> def transform_values(expr: Column, f: (Column, Column) => Column): Column =
> ???
> def map_filter(expr: Column, f: (Column, Column) => Column): Column = ???
> def map_zip_with(left: Column, right: Column, f: (Column, Column, Column) =>
> Column): Column = ???
> {code}
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
