Copyright	2013 Kei Hibino
License	BSD3
Maintainer	[email protected]
Stability	experimental
Portability	unknown
Safe Haskell	None
Language	Haskell2010

Database.Relational.Query.Pure

Contents

Interface to specify record constructors.
Constant SQL Terms

Description

This module defines interfaces between haskell pure values and query internal projection values.

Synopsis

Interface to specify record constructors.

class ProductConstructor r where Source

Specify tuple like record constructors which are allowed to define ProjectableFunctor.

Methods

productConstructor :: r Source

The constructor which has type r.

Instances

ProductConstructor (a -> b -> (a, b)) Source

ProductConstructor instance of pair.

Constant SQL Terms

class ShowConstantTermsSQL a where Source

Interface for constant SQL term list.

Methods

showConstantTermsSQL' :: a -> [StringSQL] Source

Instances

ShowConstantTermsSQL Bool Source	Constant SQL terms of `Bool`.
ShowConstantTermsSQL Char Source	Constant SQL terms of `Char`.
ShowConstantTermsSQL Double Source	Constant SQL terms of `Double`. Caution for floating-point error rate.
ShowConstantTermsSQL Float Source	Constant SQL terms of `Float`. Caution for floating-point error rate.
ShowConstantTermsSQL Int Source	Constant SQL terms of `Int`. Use this carefully, because this is architecture dependent size of integer type.
ShowConstantTermsSQL Int8 Source	Constant SQL terms of `Int8`.
ShowConstantTermsSQL Int16 Source	Constant SQL terms of `Int16`.
ShowConstantTermsSQL Int32 Source	Constant SQL terms of `Int32`.
ShowConstantTermsSQL Int64 Source	Constant SQL terms of `Int64`.
ShowConstantTermsSQL String Source	Constant SQL terms of `String`.
ShowConstantTermsSQL ByteString Source	Constant SQL terms of `ByteString`.
ShowConstantTermsSQL ByteString Source	Constant SQL terms of `ByteString`.
ShowConstantTermsSQL Text Source	Constant SQL terms of `Text`.
ShowConstantTermsSQL Text Source	Constant SQL terms of `Text`.
ShowConstantTermsSQL LocalTime Source	Constant SQL terms of `LocalTime`.
ShowConstantTermsSQL ZonedTime Source	Constant SQL terms of `ZonedTime`. This generates *NOT STANDARD* SQL of TIMESTAMPTZ literal.
ShowConstantTermsSQL TimeOfDay Source	Constant SQL terms of `TimeOfDay`.
ShowConstantTermsSQL UTCTime Source	Constant SQL terms of `UTCTime`. This generates *NOT STANDARD* SQL of TIMESTAMPTZ literal with UTC timezone.
ShowConstantTermsSQL Day Source	Constant SQL terms of `Day`.
(PersistableWidth a, ShowConstantTermsSQL a) => ShowConstantTermsSQL (Maybe a) Source	Constant SQL terms of `Maybe` type. Width inference is required.
(ShowConstantTermsSQL a, ShowConstantTermsSQL b) => ShowConstantTermsSQL (a, b) Source	Constant SQL terms of '(a, b)' type.

showConstantTermsSQL :: ShowConstantTermsSQL a => a -> [String] Source

String interface of showConstantTermsSQL'.