Safe Haskell	None
Language	Haskell2010

Hasql.Interpolate.Internal.Encoder

Synopsis

class EncodeValue a where
- encodeValue :: Value a
class EncodeField a where
- encodeField :: NullableOrNot Value a

Documentation

class EncodeValue a where Source #

This type class determines which encoder we will apply to a field by its type.

Example

Expand

data ThreatLevel = None | Midnight

instance EncodeValue ThreatLevel where
  encodeValue = enum \case
    None     -> "none"
    Midnight -> "midnight"

Methods

encodeValue :: Value a Source #

Instances

Instances details

EncodeValue Bool Source #	Encode a `Bool` as a postgres `boolean` using `bool`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value Bool Source #
EncodeValue Char Source #	Encode a `Char` as a postgres `char` using `char`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value Char Source #
EncodeValue Double Source #	Encode a `Double` as a postgres `float8` using `float8`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value Double Source #
EncodeValue Float Source #	Encode a `Float` as a postgres `float4` using `float4`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value Float Source #
EncodeValue Int16 Source #	Encode a `Int16` as a postgres `int2` using `int2`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value Int16 Source #
EncodeValue Int32 Source #	Encode a `Int32` as a postgres `int4` using `int4`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value Int32 Source #
EncodeValue Int64 Source #	Encode a `Int64` as a postgres `int8` using `int8`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value Int64 Source #
EncodeValue Scientific Source #	Encode a `Scientific` as a postgres `numeric` using `numeric`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value Scientific Source #
EncodeValue Text Source #	Encode a `Text` as a postgres `text` using `text`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value Text Source #
EncodeValue UTCTime Source #	Encode a `UTCTime` as a postgres `timestamptz` using `timestamptz`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value UTCTime Source #
EncodeValue UUID Source #	Encode a `UUID` as a postgres `uuid` using `uuid`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value UUID Source #
EncodeValue Day Source #	Encode a `Day` as a postgres `date` using `date`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value Day Source #
EncodeValue DiffTime Source #	Encode a `DiffTime` as a postgres `interval` using `interval`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value DiffTime Source #
EncodeValue LocalTime Source #	Encode a `LocalTime` as a postgres `timestamp` using `timestamp`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value LocalTime Source #
EncodeValue Json Source #	Encode an Aeson `Value` to a postgres `json` using `json`
Instance details Defined in Hasql.Interpolate.Internal.Json Methods encodeValue :: Value Json Source #
EncodeValue Jsonb Source #	Encode an Aeson `Value` to a postgres `jsonb` using `jsonb`
Instance details Defined in Hasql.Interpolate.Internal.Json Methods encodeValue :: Value Jsonb Source #
EncodeField a => EncodeValue [a] Source #	Encode a list as a postgres array using `foldableArray`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value [a] Source #
EncodeField a => EncodeValue (Vector a) Source #	Encode a `Vector` as a postgres array using `foldableArray`
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeValue :: Value (Vector a) Source #
ToJSON a => EncodeValue (AsJsonb a) Source #	Encode anything that is an instance of `ToJSON` to a postgres `jsonb`
Instance details Defined in Hasql.Interpolate.Internal.Json Methods encodeValue :: Value (AsJsonb a) Source #
ToJSON a => EncodeValue (AsJson a) Source #	Encode anything that is an instance of `ToJSON` to a postgres `json`
Instance details Defined in Hasql.Interpolate.Internal.Json Methods encodeValue :: Value (AsJson a) Source #

class EncodeField a where Source #

You do not need to define instances for this class; The two instances exported here cover all uses. The class only exists to lift Value to hasql's NullableOrNot GADT.

Methods

encodeField :: NullableOrNot Value a Source #

Instances

Instances details

EncodeValue a => EncodeField a Source #	Overlappable instance for all non-nullable types.
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeField :: NullableOrNot Value a Source #
EncodeValue a => EncodeField (Maybe a) Source #	Instance for all nullable types. `Nothing` is encoded as `null`.
Instance details Defined in Hasql.Interpolate.Internal.Encoder Methods encodeField :: NullableOrNot Value (Maybe a) Source #