Internal.Composite

Decode postgresql composites into entities Adapted code from: https://hackage.haskell.org/package/postgresql-simple-0.4.10.0/docs/src/Database-PostgreSQL-Simple-Arrays.html

Documentation

data Composite (ts :: [*]) where

Constructors

EmptyComposite :: Composite '[]

ConsComposite :: t -> Composite ts -> Composite (t ': ts)

Instances

(Show (Composite ts), Show t) => Show (Composite ((:) * t ts))

Methods

showsPrec :: Int -> Composite ((* ': t) ts) -> ShowS

show :: Composite ((* ': t) ts) -> String

showList :: [Composite ((* ': t) ts)] -> ShowS

Show (Composite ([] *))

Methods

showsPrec :: Int -> Composite [*] -> ShowS

show :: Composite [*] -> String

showList :: [Composite [*]] -> ShowS

FieldParsers ts => FromField (Composite ts)

any postgresql composite type whose fields are compatible with types ts

Methods

fromField :: FieldParser (Composite ts)

pgCompositeFieldParser :: FieldParsers ts => FieldParser (Composite ts)

class Typeable ts => FieldParsers ts where

Minimal complete definition

fromCompositeFormats

Methods

fromCompositeFormats :: [TypeInfo] -> Field -> [CompositeFormat] -> Conversion (Composite ts)

Instances

FieldParsers ([] *)

Methods

fromCompositeFormats :: [TypeInfo] -> Field -> [CompositeFormat] -> Conversion (Composite [*])

(FromField t, Typeable * t, FieldParsers ts) => FieldParsers ((:) * t ts)

Methods

fromCompositeFormats :: [TypeInfo] -> Field -> [CompositeFormat] -> Conversion (Composite ((* ': t) ts))

fromComposite :: FieldParsers ts => TypeInfo -> Field -> Parser (Conversion (Composite ts))

compositeFormat :: Parser CompositeFormat

data CompositeFormat

Constructors

Plain ByteString

Quoted ByteString

NullStr

Instances

Eq CompositeFormat

Methods

(==) :: CompositeFormat -> CompositeFormat -> Bool

(/=) :: CompositeFormat -> CompositeFormat -> Bool

Ord CompositeFormat

Methods

compare :: CompositeFormat -> CompositeFormat -> Ordering

(<) :: CompositeFormat -> CompositeFormat -> Bool

(<=) :: CompositeFormat -> CompositeFormat -> Bool

(>) :: CompositeFormat -> CompositeFormat -> Bool

(>=) :: CompositeFormat -> CompositeFormat -> Bool

max :: CompositeFormat -> CompositeFormat -> CompositeFormat

min :: CompositeFormat -> CompositeFormat -> CompositeFormat

Show CompositeFormat

Methods

showsPrec :: Int -> CompositeFormat -> ShowS

show :: CompositeFormat -> String

showList :: [CompositeFormat] -> ShowS

composite :: Parser [CompositeFormat]

quoted :: Parser ByteString

plain :: Parser ByteString

fmt :: CompositeFormat -> ByteString

delimit :: [CompositeFormat] -> ByteString

fmt' :: Bool -> CompositeFormat -> ByteString

esc :: ByteString -> ByteString