Safe Haskell	None
Language	Haskell2010

Spark.Core.Row

Synopsis

Documentation

The basic representation of one row of data. This is a standard type that comes out of the SQL engine in Spark.

An element in a Row object. All objects manipulated by the Spark framework are assumed to be convertible to cells.

This is usually handled by generic transforms.

Constructors

Instances

Eq Cell Source #
Methods (==) :: Cell -> Cell -> Bool # (/=) :: Cell -> Cell -> Bool #
Show Cell Source #
Methods showsPrec :: Int -> Cell -> ShowS # show :: Cell -> String # showList :: [Cell] -> ShowS #
ToJSON Cell Source #	Cell
Methods toJSON :: Cell -> Value # toEncoding :: Cell -> Encoding # toJSONList :: [Cell] -> Value # toEncodingList :: [Cell] -> Encoding #
FromSQL Cell Source #
Methods _cellToValue :: Cell -> TryS Cell

A Row of data: the basic data structure to transport information TODO rename to rowCells

Constructors

Row
Fields cells :: !(Vector Cell)

Instances

Eq Row Source #
Methods (==) :: Row -> Row -> Bool # (/=) :: Row -> Row -> Bool #
Show Row Source #
Methods showsPrec :: Int -> Row -> ShowS # show :: Row -> String # showList :: [Row] -> ShowS #
ToJSON Row Source #	Row
Methods toJSON :: Row -> Value # toEncoding :: Row -> Encoding # toJSONList :: [Row] -> Value # toEncodingList :: [Row] -> Encoding #

Instances

ToSQL Int Source #
Methods _valueToCell :: Int -> Cell
ToSQL a => ToSQL (Maybe a) Source #
Methods _valueToCell :: Maybe a -> Cell

Instances

FromSQL Int Source #
Methods _cellToValue :: Cell -> TryS Int
FromSQL Cell Source #
Methods _cellToValue :: Cell -> TryS Cell
FromSQL a => FromSQL [a] Source #
Methods _cellToValue :: Cell -> TryS [a]
FromSQL a => FromSQL (Maybe a) Source #
Methods _cellToValue :: Cell -> TryS (Maybe a)

Decodes a JSON into a row. This operation requires a SQL type that describes the schema.