Safe Haskell	None
Language	Haskell98

Database.PostgreSQL.PQTypes.ToSQL

Synopsis

Documentation

alloca-like producer of PGparam objects.

class PQFormat t => ToSQL t where Source

Class which represents "from Haskell type to SQL (libpqtypes) type" transformation.

Associated Types

type PQDest t :: * Source

Destination type (used by libpqtypes).

Methods

Arguments

:: t	Value to be put.
-> ParamAllocator	`PGparam` allocator.
-> (Ptr (PQDest t) -> IO r)	Continuation that puts converted value into inner `PGparam`.
-> IO r

Put supplied value into inner PGparam.

Instances

ToSQL Bool Source
ToSQL Char Source
ToSQL Double Source
ToSQL Float Source
ToSQL Int Source
ToSQL Int16 Source
ToSQL Int32 Source
ToSQL Int64 Source
ToSQL Word8 Source
ToSQL String Source	Encodes underlying C string as UTF-8, so if you are working with a different encoding, you should not rely on this instance.
ToSQL ByteString Source
ToSQL ByteString Source
ToSQL Text Source	Encodes underlying C string as UTF-8, so if you are working with a different encoding, you should not rely on this instance.
ToSQL UTCTime Source
ToSQL Text Source	Encodes underlying C string as UTF-8, so if you are working with a different encoding, you should not rely on this instance.
ToSQL LocalTime Source
ToSQL ZonedTime Source
ToSQL TimeOfDay Source
ToSQL Day Source
ToSQL Interval Source
ToSQL XML Source
ToSQL t => ToSQL (Maybe t) Source
ToSQL (JSONB ByteString) Source
ToSQL (JSONB ByteString) Source
ToSQL (JSONB Value) Source
ToSQL (JSON ByteString) Source
ToSQL (JSON ByteString) Source
ToSQL (JSON Value) Source
CompositeToSQL t => ToSQL (Composite t) Source
ToSQL (Binary ByteString) Source
CompositeToSQL t => ToSQL (CompositeArray2 t) Source
ToSQL t => ToSQL (Array2 t) Source
CompositeToSQL t => ToSQL (CompositeArray1 t) Source
ToSQL t => ToSQL (Array1 t) Source

put :: Storable t => t -> (Ptr t -> IO r) -> IO r Source

Function that abstracts away common elements of most ToSQL instance definitions to make them easier to write and less verbose.