PostgreSQL.Binary.Encoder

Documentation

run :: Encoder a -> a -> ByteString

Value encoder

type Encoder a = a -> Builder

int2_int16 :: Encoder Int16

int2_word16 :: Encoder Word16

int4_int32 :: Encoder Int32

int4_word32 :: Encoder Word32

int8_int64 :: Encoder Int64

int8_word64 :: Encoder Word64

float4 :: Encoder Float

float8 :: Encoder Double

composite :: Encoder Composite

bool :: Encoder Bool

numeric :: Encoder Scientific

uuid :: Encoder UUID

json_ast :: Encoder Value

json_bytes :: Encoder ByteString

jsonb_ast :: Encoder Value

jsonb_bytes :: Encoder ByteString

char :: Encoder Char

A UTF-8-encoded char.

Note that since it's UTF-8-encoded not the "char" but the "text" OID should be used with it.

text_strict :: Encoder Text

text_lazy :: Encoder Text

bytea_strict :: Encoder ByteString

bytea_lazy :: Encoder ByteString

date :: Encoder Day

time_int :: Encoder TimeOfDay

time_float :: Encoder TimeOfDay

timetz_int :: Encoder (TimeOfDay, TimeZone)

timetz_float :: Encoder (TimeOfDay, TimeZone)

timestamp_int :: Encoder LocalTime

timestamp_float :: Encoder LocalTime

timestamptz_int :: Encoder UTCTime

timestamptz_float :: Encoder UTCTime

interval_int :: Encoder DiffTime

interval_float :: Encoder DiffTime

hstore :: (forall a. (a -> (Text, Maybe Text) -> a) -> a -> b -> a) -> Encoder b

A polymorphic in-place HSTORE encoder.

Accepts:

• An implementation of the foldl function (e.g., Data.Foldable.foldl'), which determines the input value.

Here's how you can use it to produce a specific encoder:

hashMapHStore :: Encoder (Data.HashMap.Strict.HashMap Text (Maybe Text))
hashMapHStore =
  hstore foldl'

hstoreRep :: Encoder HStore

array :: Word32 -> ArrayEncoder a -> Encoder a

Array encoder

data ArrayEncoder a

arrayValue :: Encoder a -> ArrayEncoder a

arrayNullableValue :: Encoder a -> ArrayEncoder (Maybe a)

arrayDimension :: (forall a. (a -> b -> a) -> a -> c -> a) -> ArrayEncoder b -> ArrayEncoder c

arrayRep :: Encoder Array

Enum

enum :: (a -> Text) -> Encoder a

Given a function, which maps the value into the textual enum label from the DB side, produces an encoder of that value