Safe Haskell	None
Language	Haskell2010

Preql.Wire.FromSql

Description

Decoding values from Postgres wire format to Haskell.

Synopsis

data FieldDecoder a = FieldDecoder Oid (BinaryParser a)
throwLocated :: UnlocatedFieldError -> InternalDecoder a
decodeVector :: RowDecoder a -> Result -> IO (Either QueryError (Vector a))
notNull :: FieldDecoder a -> RowDecoder a
nullable :: FieldDecoder a -> RowDecoder (Maybe a)
class FromSqlField a where
- fromSqlField :: FieldDecoder a
class FromSql a where
- fromSql :: RowDecoder a
fromSqlJsonField :: FromJSON a => FieldDecoder a

Documentation

data FieldDecoder a Source #

A FieldDecoder for a type a consists of an OID indicating the Postgres type which can be decoded, and a parser from the binary representation of that type to the Haskell representation.

Constructors

FieldDecoder Oid (BinaryParser a)

Instances

Functor FieldDecoder Source #
Instance details Defined in Preql.Wire.FromSql Methods fmap :: (a -> b) -> FieldDecoder a -> FieldDecoder b # (<$) :: a -> FieldDecoder b -> FieldDecoder a #

throwLocated :: UnlocatedFieldError -> InternalDecoder a Source #

decodeVector :: RowDecoder a -> Result -> IO (Either QueryError (Vector a)) Source #

notNull :: FieldDecoder a -> RowDecoder a Source #

nullable :: FieldDecoder a -> RowDecoder (Maybe a) Source #

class FromSqlField a where Source #

Methods

fromSqlField :: FieldDecoder a Source #

Instances

FromSqlField Bool Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder Bool Source #
FromSqlField Double Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder Double Source #
FromSqlField Float Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder Float Source #
FromSqlField Int16 Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder Int16 Source #
FromSqlField Int32 Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder Int32 Source #
FromSqlField Int64 Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder Int64 Source #
FromSqlField ByteString Source #	If you want to encode some more specific Haskell type via JSON, it is more efficient to use `encode` and `jsonb_bytes` directly, rather than this instance.
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder ByteString Source #
FromSqlField ByteString Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder ByteString Source #
FromSqlField Text Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder Text Source #
FromSqlField UTCTime Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder UTCTime Source #
FromSqlField Value Source #	If you want to encode some more specific Haskell type via JSON, it is more efficient to use `fromSqlJsonField` rather than this instance.
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder Value Source #
FromSqlField Text Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder Text Source #
FromSqlField String Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder String Source #
FromSqlField UUID Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder UUID Source #
FromSqlField Day Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder Day Source #
FromSqlField TimeOfDay Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder TimeOfDay Source #
FromSqlField TimeTZ Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSqlField :: FieldDecoder TimeTZ Source #

class FromSql a where Source #

Methods

fromSql :: RowDecoder a Source #

Instances

FromSql Bool Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder Bool Source #
FromSql Double Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder Double Source #
FromSql Float Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder Float Source #
FromSql Int16 Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder Int16 Source #
FromSql Int32 Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder Int32 Source #
FromSql Int64 Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder Int64 Source #
FromSql ByteString Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder ByteString Source #
FromSql ByteString Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder ByteString Source #
FromSql Text Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder Text Source #
FromSql UTCTime Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder UTCTime Source #
FromSql Value Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder Value Source #
FromSql Text Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder Text Source #
FromSql String Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder String Source #
FromSql UUID Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder UUID Source #
FromSql Day Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder Day Source #
FromSql TimeOfDay Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder TimeOfDay Source #
FromSql TimeTZ Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder TimeTZ Source #
FromSqlField a => FromSql (Maybe a) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (Maybe a) Source #
(FromSql a, FromSql b) => FromSql (a, b) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b) Source #
(FromSql a, FromSql b, FromSql c) => FromSql (a, b, c) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c) Source #
(FromSql a, FromSql b, FromSql c, FromSql d) => FromSql (a, b, c, d) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e) => FromSql (a, b, c, d, e) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f) => FromSql (a, b, c, d, e, f) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g) => FromSql (a, b, c, d, e, f, g) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h) => FromSql (a, b, c, d, e, f, g, h) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i) => FromSql (a, b, c, d, e, f, g, h, i) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j) => FromSql (a, b, c, d, e, f, g, h, i, j) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k) => FromSql (a, b, c, d, e, f, g, h, i, j, k) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l, FromSql m) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l, m) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l, m) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l, FromSql m, FromSql n) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l, m, n) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l, m, n) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l, FromSql m, FromSql n, FromSql o) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l, FromSql m, FromSql n, FromSql o, FromSql p) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l, FromSql m, FromSql n, FromSql o, FromSql p, FromSql q) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l, FromSql m, FromSql n, FromSql o, FromSql p, FromSql q, FromSql r) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l, FromSql m, FromSql n, FromSql o, FromSql p, FromSql q, FromSql r, FromSql s) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l, FromSql m, FromSql n, FromSql o, FromSql p, FromSql q, FromSql r, FromSql s, FromSql t) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l, FromSql m, FromSql n, FromSql o, FromSql p, FromSql q, FromSql r, FromSql s, FromSql t, FromSql u) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l, FromSql m, FromSql n, FromSql o, FromSql p, FromSql q, FromSql r, FromSql s, FromSql t, FromSql u, FromSql v) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l, FromSql m, FromSql n, FromSql o, FromSql p, FromSql q, FromSql r, FromSql s, FromSql t, FromSql u, FromSql v, FromSql w) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l, FromSql m, FromSql n, FromSql o, FromSql p, FromSql q, FromSql r, FromSql s, FromSql t, FromSql u, FromSql v, FromSql w, FromSql x) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x) Source #
(FromSql a, FromSql b, FromSql c, FromSql d, FromSql e, FromSql f, FromSql g, FromSql h, FromSql i, FromSql j, FromSql k, FromSql l, FromSql m, FromSql n, FromSql o, FromSql p, FromSql q, FromSql r, FromSql s, FromSql t, FromSql u, FromSql v, FromSql w, FromSql x, FromSql y) => FromSql (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y) Source #
Instance details Defined in Preql.Wire.FromSql Methods fromSql :: RowDecoder (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y) Source #

fromSqlJsonField :: FromJSON a => FieldDecoder a Source #