Copyright	(c) 2011 MailRank Inc. (c) 2011-2012 Leon P Smith
License	BSD3
Maintainer	Leon P Smith <leon@melding-monads.com>
Stability	experimental
Safe Haskell	None
Language	Haskell2010

Database.PostgreSQL.Simple.ToRow

Description

The ToRow typeclass, for rendering a collection of parameters to a SQL query.

Predefined instances are provided for tuples containing up to ten elements.

Synopsis

class ToRow a where
- toRow :: a -> [ Action ]

Documentation

class ToRow a where Source #

A collection type that can be turned into a list of rendering Action s.

Instances should use the toField method of the ToField class to perform conversion of each element of the collection.

You can derive ToRow for your data type using GHC generics, like this:

{-# LANGUAGE DeriveAnyClass #-}
{-# LANGUAGE DeriveGeneric  #-}

import GHC.Generics (Generic)
import Database.PostgreSQL.Simple (ToRow)

data User = User { name :: String, fileQuota :: Int }
  deriving (Generic, ToRow)

Note that this only works for product types (e.g. records) and does not support sum types or recursive types.

Minimal complete definition

Nothing

Methods

toRow :: a -> [ Action ] Source #

default toRow :: ( Generic a, GToRow ( Rep a)) => a -> [ Action ] Source #

Instances

Instances details

ToRow () Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: () -> [ Action ] Source #
ToField a => ToRow [a] Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: [a] -> [ Action ] Source #
ToField a => ToRow ( Only a) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: Only a -> [ Action ] Source #
( ToField a, ToField b) => ToRow (a, b) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b) -> [ Action ] Source #
( ToRow a, ToRow b) => ToRow (a :. b) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a :. b) -> [ Action ] Source #
( ToField a, ToField b, ToField c) => ToRow (a, b, c) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d) => ToRow (a, b, c, d) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e) => ToRow (a, b, c, d, e) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f) => ToRow (a, b, c, d, e, f) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g) => ToRow (a, b, c, d, e, f, g) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g, ToField h) => ToRow (a, b, c, d, e, f, g, h) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g, h) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g, ToField h, ToField i) => ToRow (a, b, c, d, e, f, g, h, i) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g, h, i) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g, ToField h, ToField i, ToField j) => ToRow (a, b, c, d, e, f, g, h, i, j) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g, h, i, j) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g, ToField h, ToField i, ToField j, ToField k) => ToRow (a, b, c, d, e, f, g, h, i, j, k) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g, h, i, j, k) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g, ToField h, ToField i, ToField j, ToField k, ToField l) => ToRow (a, b, c, d, e, f, g, h, i, j, k, l) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g, h, i, j, k, l) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g, ToField h, ToField i, ToField j, ToField k, ToField l, ToField m) => ToRow (a, b, c, d, e, f, g, h, i, j, k, l, m) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g, h, i, j, k, l, m) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g, ToField h, ToField i, ToField j, ToField k, ToField l, ToField m, ToField n) => ToRow (a, b, c, d, e, f, g, h, i, j, k, l, m, n) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g, ToField h, ToField i, ToField j, ToField k, ToField l, ToField m, ToField n, ToField o) => ToRow (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g, ToField h, ToField i, ToField j, ToField k, ToField l, ToField m, ToField n, ToField o, ToField p) => ToRow (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g, ToField h, ToField i, ToField j, ToField k, ToField l, ToField m, ToField n, ToField o, ToField p, ToField q) => ToRow (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g, ToField h, ToField i, ToField j, ToField k, ToField l, ToField m, ToField n, ToField o, ToField p, ToField q, ToField r) => ToRow (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g, ToField h, ToField i, ToField j, ToField k, ToField l, ToField m, ToField n, ToField o, ToField p, ToField q, ToField r, ToField s) => ToRow (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s) Source #
Instance details Defined in Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s) -> [ Action ] Source #
( ToField a, ToField b, ToField c, ToField d, ToField e, ToField f, ToField g, ToField h, ToField i, ToField j, ToField k, ToField l, ToField m, ToField n, ToField o, ToField p, ToField q, ToField r, ToField s, ToField t) => ToRow (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 Database.PostgreSQL.Simple.ToRow Methods toRow :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t) -> [ Action ] Source #