Safe Haskell	None
Language	Haskell2010

Database.Beam.Backend.SQL.BeamExtensions

Description

Some functionality is useful enough to be provided across backends, but is not standardized. For example, many RDBMS systems provide ways of fetching auto-incrementing or defaulting fields on INSERT or UPDATE.

Beam provides type classes that some backends instantiate that provide this support. This uses direct means on sufficiently advanced backends and is emulated on others.

Synopsis

class MonadBeam be m => MonadBeamInsertReturning be m | m -> be where
- runInsertReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlInsert be table -> m [table Identity]
class MonadBeam be m => MonadBeamUpdateReturning be m | m -> be where
- runUpdateReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlUpdate be table -> m [table Identity]
class MonadBeam be m => MonadBeamDeleteReturning be m | m -> be where
- runDeleteReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlDelete be table -> m [table Identity]
class BeamSqlBackend be => BeamHasInsertOnConflict be where
- data SqlConflictTarget be (table :: (Type -> Type) -> Type) :: Type
- data SqlConflictAction be (table :: (Type -> Type) -> Type) :: Type
- insertOnConflict :: Beamable table => DatabaseEntity be db (TableEntity table) -> SqlInsertValues be (table (QExpr be s)) -> SqlConflictTarget be table -> SqlConflictAction be table -> SqlInsert be table
- anyConflict :: SqlConflictTarget be table
- conflictingFields :: Projectible be proj => (table (QExpr be QInternal) -> proj) -> SqlConflictTarget be table
- conflictingFieldsWhere :: Projectible be proj => (table (QExpr be QInternal) -> proj) -> (forall s. table (QExpr be s) -> QExpr be s Bool) -> SqlConflictTarget be table
- onConflictDoNothing :: SqlConflictAction be table
- onConflictUpdateSet :: Beamable table => (forall s. table (QField s) -> table (QExpr be s) -> QAssignment be s) -> SqlConflictAction be table
- onConflictUpdateSetWhere :: Beamable table => (forall s. table (QField s) -> table (QExpr be s) -> QAssignment be s) -> (forall s. table (QField s) -> table (QExpr be s) -> QExpr be s Bool) -> SqlConflictAction be table
newtype SqlSerial a = SqlSerial {
- unSerial :: a
}
onConflictUpdateInstead :: forall be table proj. (BeamHasInsertOnConflict be, Beamable table, ProjectibleWithPredicate AnyType () (InaccessibleQAssignment be) proj) => (table (Const (InaccessibleQAssignment be)) -> proj) -> SqlConflictAction be table
onConflictUpdateAll :: forall be table. (BeamHasInsertOnConflict be, Beamable table) => SqlConflictAction be table

Documentation

class MonadBeam be m => MonadBeamInsertReturning be m | m -> be where Source #

MonadBeams that support returning the newly created rows of an INSERT statement. Useful for discovering the real value of a defaulted value.

Methods

runInsertReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlInsert be table -> m [table Identity] Source #

Instances

(MonadBeamInsertReturning be m, Monoid r) => MonadBeamInsertReturning be (WriterT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runInsertReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlInsert be table -> WriterT r m [table Identity] Source #
(MonadBeamInsertReturning be m, Monoid r) => MonadBeamInsertReturning be (WriterT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runInsertReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlInsert be table -> WriterT r m [table Identity] Source #
MonadBeamInsertReturning be m => MonadBeamInsertReturning be (StateT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runInsertReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlInsert be table -> StateT r m [table Identity] Source #
MonadBeamInsertReturning be m => MonadBeamInsertReturning be (StateT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runInsertReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlInsert be table -> StateT r m [table Identity] Source #
MonadBeamInsertReturning be m => MonadBeamInsertReturning be (ExceptT e m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runInsertReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlInsert be table -> ExceptT e m [table Identity] Source #
MonadBeamInsertReturning be m => MonadBeamInsertReturning be (ReaderT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runInsertReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlInsert be table -> ReaderT r m [table Identity] Source #
MonadBeamInsertReturning be m => MonadBeamInsertReturning be (ContT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runInsertReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlInsert be table -> ContT r m [table Identity] Source #
(MonadBeamInsertReturning be m, Monoid w) => MonadBeamInsertReturning be (RWST r w s m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runInsertReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlInsert be table -> RWST r w s m [table Identity] Source #
(MonadBeamInsertReturning be m, Monoid w) => MonadBeamInsertReturning be (RWST r w s m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runInsertReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlInsert be table -> RWST r w s m [table Identity] Source #

class MonadBeam be m => MonadBeamUpdateReturning be m | m -> be where Source #

MonadBeams that support returning the updated rows of an UPDATE statement. Useful for discovering the new values of the updated rows.

Methods

runUpdateReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlUpdate be table -> m [table Identity] Source #

Instances

(MonadBeamUpdateReturning be m, Monoid r) => MonadBeamUpdateReturning be (WriterT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runUpdateReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlUpdate be table -> WriterT r m [table Identity] Source #
(MonadBeamUpdateReturning be m, Monoid r) => MonadBeamUpdateReturning be (WriterT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runUpdateReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlUpdate be table -> WriterT r m [table Identity] Source #
MonadBeamUpdateReturning be m => MonadBeamUpdateReturning be (StateT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runUpdateReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlUpdate be table -> StateT r m [table Identity] Source #
MonadBeamUpdateReturning be m => MonadBeamUpdateReturning be (StateT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runUpdateReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlUpdate be table -> StateT r m [table Identity] Source #
MonadBeamUpdateReturning be m => MonadBeamUpdateReturning be (ExceptT e m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runUpdateReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlUpdate be table -> ExceptT e m [table Identity] Source #
MonadBeamUpdateReturning be m => MonadBeamUpdateReturning be (ReaderT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runUpdateReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlUpdate be table -> ReaderT r m [table Identity] Source #
MonadBeamUpdateReturning be m => MonadBeamUpdateReturning be (ContT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runUpdateReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlUpdate be table -> ContT r m [table Identity] Source #
(MonadBeamUpdateReturning be m, Monoid w) => MonadBeamUpdateReturning be (RWST r w s m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runUpdateReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlUpdate be table -> RWST r w s m [table Identity] Source #
(MonadBeamUpdateReturning be m, Monoid w) => MonadBeamUpdateReturning be (RWST r w s m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runUpdateReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlUpdate be table -> RWST r w s m [table Identity] Source #

class MonadBeam be m => MonadBeamDeleteReturning be m | m -> be where Source #

MonadBeams that suppert returning rows that will be deleted by the given DELETE statement. Useful for deallocating resources based on the value of deleted rows.

Methods

runDeleteReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlDelete be table -> m [table Identity] Source #

Instances

(MonadBeamDeleteReturning be m, Monoid r) => MonadBeamDeleteReturning be (WriterT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runDeleteReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlDelete be table -> WriterT r m [table Identity] Source #
(MonadBeamDeleteReturning be m, Monoid r) => MonadBeamDeleteReturning be (WriterT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runDeleteReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlDelete be table -> WriterT r m [table Identity] Source #
MonadBeamDeleteReturning be m => MonadBeamDeleteReturning be (StateT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runDeleteReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlDelete be table -> StateT r m [table Identity] Source #
MonadBeamDeleteReturning be m => MonadBeamDeleteReturning be (StateT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runDeleteReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlDelete be table -> StateT r m [table Identity] Source #
MonadBeamDeleteReturning be m => MonadBeamDeleteReturning be (ExceptT e m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runDeleteReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlDelete be table -> ExceptT e m [table Identity] Source #
MonadBeamDeleteReturning be m => MonadBeamDeleteReturning be (ReaderT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runDeleteReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlDelete be table -> ReaderT r m [table Identity] Source #
MonadBeamDeleteReturning be m => MonadBeamDeleteReturning be (ContT r m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runDeleteReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlDelete be table -> ContT r m [table Identity] Source #
(MonadBeamDeleteReturning be m, Monoid w) => MonadBeamDeleteReturning be (RWST r w s m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runDeleteReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlDelete be table -> RWST r w s m [table Identity] Source #
(MonadBeamDeleteReturning be m, Monoid w) => MonadBeamDeleteReturning be (RWST r w s m) Source #
Instance details Defined in Database.Beam.Backend.SQL.BeamExtensions Methods runDeleteReturningList :: (Beamable table, Projectible be (table (QExpr be ())), FromBackendRow be (table Identity)) => SqlDelete be table -> RWST r w s m [table Identity] Source #

class BeamSqlBackend be => BeamHasInsertOnConflict be where Source #

Associated Types

data SqlConflictTarget be (table :: (Type -> Type) -> Type) :: Type Source #

Specifies the kind of constraint that must be violated for the action to occur

data SqlConflictAction be (table :: (Type -> Type) -> Type) :: Type Source #

What to do when an INSERT statement inserts a row into the table tbl that violates a constraint.

Methods

insertOnConflict :: Beamable table => DatabaseEntity be db (TableEntity table) -> SqlInsertValues be (table (QExpr be s)) -> SqlConflictTarget be table -> SqlConflictAction be table -> SqlInsert be table Source #

anyConflict :: SqlConflictTarget be table Source #

conflictingFields :: Projectible be proj => (table (QExpr be QInternal) -> proj) -> SqlConflictTarget be table Source #

conflictingFieldsWhere :: Projectible be proj => (table (QExpr be QInternal) -> proj) -> (forall s. table (QExpr be s) -> QExpr be s Bool) -> SqlConflictTarget be table Source #

onConflictDoNothing :: SqlConflictAction be table Source #

onConflictUpdateSet :: Beamable table => (forall s. table (QField s) -> table (QExpr be s) -> QAssignment be s) -> SqlConflictAction be table Source #

onConflictUpdateSetWhere :: Beamable table => (forall s. table (QField s) -> table (QExpr be s) -> QAssignment be s) -> (forall s. table (QField s) -> table (QExpr be s) -> QExpr be s Bool) -> SqlConflictAction be table Source #

newtype SqlSerial a Source #

Constructors

SqlSerial
Fields unSerial :: a

Instances

FromBackendRow be x => FromBackendRow be (SqlSerial x) Source #
Instance details Defined in Database.Beam.Backend.SQL.Row Methods fromBackendRow :: FromBackendRowM be (SqlSerial x) Source # valuesNeeded :: Proxy be -> Proxy (SqlSerial x) -> Int Source #
HasSqlValueSyntax syntax x => HasSqlValueSyntax syntax (SqlSerial x) Source #
Instance details Defined in Database.Beam.Backend.SQL.SQL92 Methods sqlValueSyntax :: SqlSerial x -> syntax Source #
HasSqlQuantifiedEqualityCheck syntax a => HasSqlQuantifiedEqualityCheck syntax (SqlSerial a) Source #
Instance details Defined in Database.Beam.Query.Ord Methods sqlQEqE :: Proxy (SqlSerial a) -> Proxy syntax -> Maybe (BeamSqlBackendExpressionQuantifierSyntax syntax) -> BeamSqlBackendExpressionSyntax syntax -> BeamSqlBackendExpressionSyntax syntax -> BeamSqlBackendExpressionSyntax syntax Source # sqlQNeqE :: Proxy (SqlSerial a) -> Proxy syntax -> Maybe (BeamSqlBackendExpressionQuantifierSyntax syntax) -> BeamSqlBackendExpressionSyntax syntax -> BeamSqlBackendExpressionSyntax syntax -> BeamSqlBackendExpressionSyntax syntax Source #
HasSqlEqualityCheck be a => HasSqlEqualityCheck be (SqlSerial a) Source #
Instance details Defined in Database.Beam.Query.Ord Methods sqlEqE :: Proxy (SqlSerial a) -> Proxy be -> BeamSqlBackendExpressionSyntax be -> BeamSqlBackendExpressionSyntax be -> BeamSqlBackendExpressionSyntax be Source # sqlNeqE :: Proxy (SqlSerial a) -> Proxy be -> BeamSqlBackendExpressionSyntax be -> BeamSqlBackendExpressionSyntax be -> BeamSqlBackendExpressionSyntax be Source # sqlEqTriE :: Proxy (SqlSerial a) -> Proxy be -> BeamSqlBackendExpressionSyntax be -> BeamSqlBackendExpressionSyntax be -> BeamSqlBackendExpressionSyntax be Source # sqlNeqTriE :: Proxy (SqlSerial a) -> Proxy be -> BeamSqlBackendExpressionSyntax be -> BeamSqlBackendExpressionSyntax be -> BeamSqlBackendExpressionSyntax be Source #
Enum a => Enum (SqlSerial a) Source #
Instance details Defined in Database.Beam.Backend.SQL.Types Methods succ :: SqlSerial a -> SqlSerial a # pred :: SqlSerial a -> SqlSerial a # toEnum :: Int -> SqlSerial a # fromEnum :: SqlSerial a -> Int # enumFrom :: SqlSerial a -> [SqlSerial a] # enumFromThen :: SqlSerial a -> SqlSerial a -> [SqlSerial a] # enumFromTo :: SqlSerial a -> SqlSerial a -> [SqlSerial a] # enumFromThenTo :: SqlSerial a -> SqlSerial a -> SqlSerial a -> [SqlSerial a] #
Eq a => Eq (SqlSerial a) Source #
Instance details Defined in Database.Beam.Backend.SQL.Types Methods (==) :: SqlSerial a -> SqlSerial a -> Bool # (/=) :: SqlSerial a -> SqlSerial a -> Bool #
Integral a => Integral (SqlSerial a) Source #
Instance details Defined in Database.Beam.Backend.SQL.Types Methods quot :: SqlSerial a -> SqlSerial a -> SqlSerial a # rem :: SqlSerial a -> SqlSerial a -> SqlSerial a # div :: SqlSerial a -> SqlSerial a -> SqlSerial a # mod :: SqlSerial a -> SqlSerial a -> SqlSerial a # quotRem :: SqlSerial a -> SqlSerial a -> (SqlSerial a, SqlSerial a) # divMod :: SqlSerial a -> SqlSerial a -> (SqlSerial a, SqlSerial a) # toInteger :: SqlSerial a -> Integer #
Num a => Num (SqlSerial a) Source #
Instance details Defined in Database.Beam.Backend.SQL.Types Methods (+) :: SqlSerial a -> SqlSerial a -> SqlSerial a # (-) :: SqlSerial a -> SqlSerial a -> SqlSerial a # (*) :: SqlSerial a -> SqlSerial a -> SqlSerial a # negate :: SqlSerial a -> SqlSerial a # abs :: SqlSerial a -> SqlSerial a # signum :: SqlSerial a -> SqlSerial a # fromInteger :: Integer -> SqlSerial a #
Ord a => Ord (SqlSerial a) Source #
Instance details Defined in Database.Beam.Backend.SQL.Types Methods compare :: SqlSerial a -> SqlSerial a -> Ordering # (<) :: SqlSerial a -> SqlSerial a -> Bool # (<=) :: SqlSerial a -> SqlSerial a -> Bool # (>) :: SqlSerial a -> SqlSerial a -> Bool # (>=) :: SqlSerial a -> SqlSerial a -> Bool # max :: SqlSerial a -> SqlSerial a -> SqlSerial a # min :: SqlSerial a -> SqlSerial a -> SqlSerial a #
Read a => Read (SqlSerial a) Source #
Instance details Defined in Database.Beam.Backend.SQL.Types Methods readsPrec :: Int -> ReadS (SqlSerial a) # readList :: ReadS [SqlSerial a] # readPrec :: ReadPrec (SqlSerial a) # readListPrec :: ReadPrec [SqlSerial a] #
Real a => Real (SqlSerial a) Source #
Instance details Defined in Database.Beam.Backend.SQL.Types Methods toRational :: SqlSerial a -> Rational #
Show a => Show (SqlSerial a) Source #
Instance details Defined in Database.Beam.Backend.SQL.Types Methods showsPrec :: Int -> SqlSerial a -> ShowS # show :: SqlSerial a -> String # showList :: [SqlSerial a] -> ShowS #
ToJSON a => ToJSON (SqlSerial a) Source #
Instance details Defined in Database.Beam.Backend.SQL.Types Methods toJSON :: SqlSerial a -> Value # toEncoding :: SqlSerial a -> Encoding # toJSONList :: [SqlSerial a] -> Value # toEncodingList :: [SqlSerial a] -> Encoding #
FromJSON a => FromJSON (SqlSerial a) Source #
Instance details Defined in Database.Beam.Backend.SQL.Types Methods parseJSON :: Value -> Parser (SqlSerial a) # parseJSONList :: Value -> Parser [SqlSerial a] #

onConflictUpdateInstead :: forall be table proj. (BeamHasInsertOnConflict be, Beamable table, ProjectibleWithPredicate AnyType () (InaccessibleQAssignment be) proj) => (table (Const (InaccessibleQAssignment be)) -> proj) -> SqlConflictAction be table Source #

onConflictUpdateAll :: forall be table. (BeamHasInsertOnConflict be, Beamable table) => SqlConflictAction be table Source #