| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Database.PostgreSQL.ORM.SqlType
- class (ToField a, FromField a) => SqlType a where
- getTypeOid :: Connection -> ByteString -> IO Oid
Documentation
class (ToField a, FromField a) => SqlType a where Source #
The class of Haskell types that can be converted to and from a
particular SQL type. For most instances, you only need to define
sqlBaseType.
Minimal complete definition
Methods
sqlBaseType :: a -> ByteString Source #
The name of the SQL type corresponding to Haskell type a,
when a value of a can be null. This is the SQL type to and
from which a Maybe aNothing
corresponds to the SQL value null).
sqlType :: a -> ByteString Source #
The name of the SQL type corresponding to Haskell type a,
when a is not wrapped in Maybe and hence cannot be null. If
sqlType is unspecified, the default is to append "NOT NULL"
to sqlBaseType.
Instances
| SqlType Bool Source # | |
| SqlType Double Source # | |
| SqlType Float Source # | |
| SqlType Int16 Source # | |
| SqlType Int32 Source # | |
| SqlType Int64 Source # | |
| SqlType ByteString Source # | |
| SqlType ByteString Source # | |
| SqlType String Source # | |
| SqlType Text Source # | |
| SqlType UTCTime Source # | |
| SqlType Text Source # | |
| SqlType Oid Source # | |
| SqlType LocalTimestamp Source # | |
| SqlType UTCTimestamp Source # | |
| SqlType ZonedTimestamp Source # | |
| SqlType Date Source # | |
| SqlType ZonedTime Source # | |
| SqlType LocalTime Source # | |
| SqlType TimeOfDay Source # | |
| SqlType Day Source # | |
| SqlType DBKey Source # | |
| SqlType a => SqlType (Maybe a) Source # | |
| SqlType (Binary ByteString) Source # | |
| SqlType (Binary ByteString) Source # | |
| (Typeable * a, SqlType a) => SqlType (Vector a) Source # | |
| Model a => SqlType (DBRefUnique a) Source # | |
| Model a => SqlType (DBRef a) Source # | |
getTypeOid :: Connection -> ByteString -> IO Oid Source #