Safe Haskell	None
Language	Haskell2010

Spark.Core.Row

Synopsis

Documentation

data Cell Source #

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

Empty
IntElement !Int
DoubleElement !Double
StringElement !Text
BoolElement !Bool
RowArray !(Vector Cell)

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 #
FromSQL Cell Source #
Methods _cellToValue :: Cell -> TryS Cell Source #
(~) * s String => CanRename DynColumn s Source #
Methods (@@) :: DynColumn -> s -> DynColumn Source #
CanRename DynColumn FieldName Source #
Methods (@@) :: DynColumn -> FieldName -> DynColumn Source #
Project DataFrame Text Source #
Methods _performProject :: DataFrame -> Text -> ProjectReturn DataFrame Text
Project DataFrame DynamicColProjection Source #
Methods _performProject :: DataFrame -> DynamicColProjection -> ProjectReturn DataFrame DynamicColProjection
Project DynColumn Text Source #
Methods _performProject :: DynColumn -> Text -> ProjectReturn DynColumn Text
Project DynColumn DynamicColProjection Source #
Methods _performProject :: DynColumn -> DynamicColProjection -> ProjectReturn DynColumn DynamicColProjection
GeneralizedHomo2 LocalFrame LocalFrame Source #
Methods _projectHomo :: LocalFrame -> LocalFrame -> HomoColOp2 -> GeneralizedHomoReturn LocalFrame LocalFrame
GeneralizedHomo2 DynColumn DynColumn Source #
Methods _projectHomo :: DynColumn -> DynColumn -> HomoColOp2 -> GeneralizedHomoReturn DynColumn DynColumn
Project DataFrame (StaticColProjection a b) Source #
Methods _performProject :: DataFrame -> StaticColProjection a b -> ProjectReturn DataFrame (StaticColProjection a b)
GeneralizedHomo2 LocalFrame (Column ref x) Source #
Methods _projectHomo :: LocalFrame -> Column ref x -> HomoColOp2 -> GeneralizedHomoReturn LocalFrame (Column ref x)
GeneralizedHomo2 DynColumn (Column ref x) Source #
Methods _projectHomo :: DynColumn -> Column ref x -> HomoColOp2 -> GeneralizedHomoReturn DynColumn (Column ref x)
GeneralizedHomo2 (Column ref x) LocalFrame Source #
Methods _projectHomo :: Column ref x -> LocalFrame -> HomoColOp2 -> GeneralizedHomoReturn (Column ref x) LocalFrame
GeneralizedHomo2 (Column ref x) DynColumn Source #
Methods _projectHomo :: Column ref x -> DynColumn -> HomoColOp2 -> GeneralizedHomoReturn (Column ref x) DynColumn

data Row Source #

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 #

class ToSQL a Source #

Instances

ToSQL Double Source #
Methods _valueToCell :: Double -> Cell
ToSQL Int Source #
Methods _valueToCell :: Int -> Cell
ToSQL Text Source #
Methods _valueToCell :: Text -> Cell
ToSQL a => ToSQL (Maybe a) Source #
Methods _valueToCell :: Maybe a -> Cell
(ToSQL a, ToSQL b) => ToSQL (a, b) Source #
Methods _valueToCell :: (a, b) -> Cell

class FromSQL a Source #

Instances

FromSQL Bool Source #
Methods _cellToValue :: Cell -> TryS Bool Source #
FromSQL Double Source #
Methods _cellToValue :: Cell -> TryS Double Source #
FromSQL Int Source #
Methods _cellToValue :: Cell -> TryS Int Source #
FromSQL Text Source #
Methods _cellToValue :: Cell -> TryS Text Source #
FromSQL DataTypeRepr Source #
Methods _cellToValue :: Cell -> TryS DataTypeRepr Source #
FromSQL DataTypeElementRepr Source #
Methods _cellToValue :: Cell -> TryS DataTypeElementRepr Source #
FromSQL Cell Source #
Methods _cellToValue :: Cell -> TryS Cell Source #
FromSQL a => FromSQL [a] Source #
Methods _cellToValue :: Cell -> TryS [a] Source #
FromSQL a => FromSQL (Maybe a) Source #
Methods _cellToValue :: Cell -> TryS (Maybe a) Source #
(FromSQL a1, FromSQL a2) => FromSQL (a1, a2) Source #
Methods _cellToValue :: Cell -> TryS (a1, a2) Source #

valueToCell :: ToSQL a => a -> Cell Source #

cellToValue :: FromSQL a => Cell -> Either Text a Source #

jsonToCell :: DataType -> Value -> Either Text Cell Source #

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

rowArray :: [Cell] -> Cell Source #

Convenience constructor for an array of cells.