{-# OPTIONS_HADDOCK not-home #-}
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE Arrows #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE DeriveFunctor #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE UndecidableInstances #-}
module Opaleye.Internal.MaybeFields where
import Control.Arrow (returnA, (<<<), (>>>))
import qualified Opaleye.Internal.Binary as B
import qualified Opaleye.Internal.Column as IC
import qualified Opaleye.ToFields as Constant
import qualified Opaleye.Internal.HaskellDB.PrimQuery as HPQ
import Opaleye.Internal.Inferrable (Inferrable(Inferrable),
runInferrable)
import qualified Opaleye.Internal.QueryArr as IQ
import qualified Opaleye.Internal.Rebind as Rebind
import qualified Opaleye.Internal.RunQuery as RQ
import qualified Opaleye.Internal.Unpackspec as U
import qualified Opaleye.Internal.Values as V
import Opaleye.Select (Select, SelectArr)
import qualified Opaleye.Column
import qualified Opaleye.Field
import Opaleye.Field (Field)
import Opaleye.Internal.Operators ((.&&), (.||), (.==), restrict, not,
ifExplict, IfPP, EqPP(EqPP))
import qualified Opaleye.Internal.Lateral
import qualified Opaleye.SqlTypes
import Opaleye.SqlTypes (SqlBool, IsSqlType)
import Control.Monad (replicateM_)
import qualified Data.Profunctor as P
import qualified Data.Profunctor.Product as PP
import qualified Data.Profunctor.Product.Default as PP
import qualified Database.PostgreSQL.Simple.FromRow as PGSR
data MaybeFields fields =
MaybeFields {
forall fields. MaybeFields fields -> Column SqlBool
mfPresent :: Opaleye.Column.Column Opaleye.SqlTypes.SqlBool
, forall fields. MaybeFields fields -> fields
mfFields :: fields
}
deriving forall a b. a -> MaybeFields b -> MaybeFields a
forall a b. (a -> b) -> MaybeFields a -> MaybeFields b
forall (f :: * -> *).
(forall a b. (a -> b) -> f a -> f b)
-> (forall a b. a -> f b -> f a) -> Functor f
<$ :: forall a b. a -> MaybeFields b -> MaybeFields a
$c<$ :: forall a b. a -> MaybeFields b -> MaybeFields a
fmap :: forall a b. (a -> b) -> MaybeFields a -> MaybeFields b
$cfmap :: forall a b. (a -> b) -> MaybeFields a -> MaybeFields b
Functor
instance Applicative MaybeFields where
pure :: forall a. a -> MaybeFields a
pure a
fields = MaybeFields { mfPresent :: Column SqlBool
mfPresent = Bool -> Field SqlBool
Opaleye.SqlTypes.sqlBool Bool
True
, mfFields :: a
mfFields = a
fields
}
MaybeFields Column SqlBool
t a -> b
f <*> :: forall a b. MaybeFields (a -> b) -> MaybeFields a -> MaybeFields b
<*> MaybeFields Column SqlBool
t' a
a =
MaybeFields {
mfPresent :: Column SqlBool
mfPresent = Column SqlBool
t Field SqlBool -> Field SqlBool -> Field SqlBool
.&& Column SqlBool
t'
, mfFields :: b
mfFields = a -> b
f a
a
}
instance Monad MaybeFields where
return :: forall a. a -> MaybeFields a
return = forall (f :: * -> *) a. Applicative f => a -> f a
pure
MaybeFields Column SqlBool
t a
a >>= :: forall a b. MaybeFields a -> (a -> MaybeFields b) -> MaybeFields b
>>= a -> MaybeFields b
f = case a -> MaybeFields b
f a
a of
MaybeFields Column SqlBool
t' b
b -> forall fields. Column SqlBool -> fields -> MaybeFields fields
MaybeFields (Column SqlBool
t Field SqlBool -> Field SqlBool -> Field SqlBool
.&& Column SqlBool
t') b
b
nothingFields :: PP.Default V.Nullspec a a => MaybeFields a
nothingFields :: forall a. Default Nullspec a a => MaybeFields a
nothingFields = forall a b. Nullspec a b -> MaybeFields b
nothingFieldsExplicit forall a. Default Nullspec a a => Nullspec a a
def
where def :: PP.Default V.Nullspec a a => V.Nullspec a a
def :: forall a. Default Nullspec a a => Nullspec a a
def = forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def
nothingFieldsOfTypeOf :: a -> MaybeFields a
nothingFieldsOfTypeOf :: forall a. a -> MaybeFields a
nothingFieldsOfTypeOf a
a = MaybeFields {
mfPresent :: Column SqlBool
mfPresent = Bool -> Field SqlBool
Opaleye.SqlTypes.sqlBool Bool
False
, mfFields :: a
mfFields = a
a
}
justFields :: a -> MaybeFields a
justFields :: forall a. a -> MaybeFields a
justFields = forall (f :: * -> *) a. Applicative f => a -> f a
pure
maybeFields :: PP.Default IfPP b b => b -> (a -> b) -> MaybeFields a -> b
maybeFields :: forall b a. Default IfPP b b => b -> (a -> b) -> MaybeFields a -> b
maybeFields = forall b b' a. IfPP b b' -> b -> (a -> b) -> MaybeFields a -> b'
maybeFieldsExplicit forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def
matchMaybe :: PP.Default IfPP b b => MaybeFields a -> (Maybe a -> b) -> b
matchMaybe :: forall b a.
Default IfPP b b =>
MaybeFields a -> (Maybe a -> b) -> b
matchMaybe MaybeFields a
mf Maybe a -> b
f = forall b a. Default IfPP b b => b -> (a -> b) -> MaybeFields a -> b
maybeFields (Maybe a -> b
f forall a. Maybe a
Nothing) (Maybe a -> b
f forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a. a -> Maybe a
Just) MaybeFields a
mf
fromMaybeFields :: PP.Default IfPP b b => b -> MaybeFields b -> b
fromMaybeFields :: forall b. Default IfPP b b => b -> MaybeFields b -> b
fromMaybeFields = forall b. IfPP b b -> b -> MaybeFields b -> b
fromMaybeFieldsExplicit forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def
maybeFieldsToSelect :: SelectArr (MaybeFields a) a
maybeFieldsToSelect :: forall a. SelectArr (MaybeFields a) a
maybeFieldsToSelect = proc MaybeFields a
mf -> do
SelectArr (Field SqlBool) ()
restrict -< forall fields. MaybeFields fields -> Column SqlBool
mfPresent MaybeFields a
mf
forall (a :: * -> * -> *) b. Arrow a => a b b
returnA -< forall fields. MaybeFields fields -> fields
mfFields MaybeFields a
mf
catMaybeFields :: SelectArr i (MaybeFields a) -> SelectArr i a
catMaybeFields :: forall i a. SelectArr i (MaybeFields a) -> SelectArr i a
catMaybeFields = (forall {k} (cat :: k -> k -> *) (a :: k) (b :: k) (c :: k).
Category cat =>
cat a b -> cat b c -> cat a c
>>> forall a. SelectArr (MaybeFields a) a
maybeFieldsToSelect)
maybeFieldsExplicit :: IfPP b b' -> b -> (a -> b) -> MaybeFields a -> b'
maybeFieldsExplicit :: forall b b' a. IfPP b b' -> b -> (a -> b) -> MaybeFields a -> b'
maybeFieldsExplicit IfPP b b'
ifpp b
b a -> b
f MaybeFields a
mf =
forall columns columns'.
IfPP columns columns'
-> Field SqlBool -> columns -> columns -> columns'
ifExplict IfPP b b'
ifpp (forall fields. MaybeFields fields -> Column SqlBool
mfPresent MaybeFields a
mf) (a -> b
f (forall fields. MaybeFields fields -> fields
mfFields MaybeFields a
mf)) b
b
fromMaybeFieldsExplicit :: IfPP b b -> b -> MaybeFields b -> b
fromMaybeFieldsExplicit :: forall b. IfPP b b -> b -> MaybeFields b -> b
fromMaybeFieldsExplicit IfPP b b
ifpp = forall a b c. (a -> b -> c) -> b -> a -> c
flip (forall b b' a. IfPP b b' -> b -> (a -> b) -> MaybeFields a -> b'
maybeFieldsExplicit IfPP b b
ifpp) forall a. a -> a
id
nothingFieldsExplicit :: V.Nullspec a b -> MaybeFields b
nothingFieldsExplicit :: forall a b. Nullspec a b -> MaybeFields b
nothingFieldsExplicit = forall a. a -> MaybeFields a
nothingFieldsOfTypeOf forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a fields. Nullspec a fields -> fields
V.nullFields
traverseMaybeFields :: SelectArr a b -> SelectArr (MaybeFields a) (MaybeFields b)
traverseMaybeFields :: forall a b.
SelectArr a b -> SelectArr (MaybeFields a) (MaybeFields b)
traverseMaybeFields SelectArr a b
query = proc MaybeFields a
mfInput -> do
MaybeFields b
mfOutput <- forall i a. SelectArr i a -> SelectArr i (MaybeFields a)
optional (SelectArr a b
query forall {k} (cat :: k -> k -> *) (b :: k) (c :: k) (a :: k).
Category cat =>
cat b c -> cat a b -> cat a c
<<< forall a. SelectArr (MaybeFields a) a
maybeFieldsToSelect) -< MaybeFields a
mfInput
SelectArr (Field SqlBool) ()
restrict -< forall fields. MaybeFields fields -> Column SqlBool
mfPresent MaybeFields a
mfInput Field SqlBool -> Field SqlBool -> Field SqlBool
`implies` forall fields. MaybeFields fields -> Column SqlBool
mfPresent MaybeFields b
mfOutput
forall (a :: * -> * -> *) b. Arrow a => a b b
returnA -< forall fields. Column SqlBool -> fields -> MaybeFields fields
MaybeFields (forall fields. MaybeFields fields -> Column SqlBool
mfPresent MaybeFields a
mfInput) (forall fields. MaybeFields fields -> fields
mfFields MaybeFields b
mfOutput)
where Field SqlBool
a implies :: Field SqlBool -> Field SqlBool -> Field SqlBool
`implies` Field SqlBool
b = Field SqlBool -> Field SqlBool
Opaleye.Internal.Operators.not Field SqlBool
a Field SqlBool -> Field SqlBool -> Field SqlBool
.|| Field SqlBool
b
optional :: SelectArr i a -> SelectArr i (MaybeFields a)
optional :: forall i a. SelectArr i a -> SelectArr i (MaybeFields a)
optional = forall a b i.
(Select a -> Select b) -> SelectArr i a -> SelectArr i b
Opaleye.Internal.Lateral.laterally (forall a r.
(FieldNullable SqlBool -> a -> r) -> Select a -> Select r
optionalInternal (forall fields. Column SqlBool -> fields -> MaybeFields fields
MaybeFields forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall {a}. FieldNullable a -> Field SqlBool
isNotNull))
where isNotNull :: FieldNullable a -> Field SqlBool
isNotNull = Field SqlBool -> Field SqlBool
Opaleye.Internal.Operators.not forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall {a}. FieldNullable a -> Field SqlBool
Opaleye.Field.isNull
optionalInternal :: (Opaleye.Field.FieldNullable SqlBool -> a -> r) -> Select a -> Select r
optionalInternal :: forall a r.
(FieldNullable SqlBool -> a -> r) -> Select a -> Select r
optionalInternal FieldNullable SqlBool -> a -> r
f Select a
query = forall a b.
State Tag (a -> (b, PrimExpr, PrimQuery)) -> QueryArr a b
IQ.leftJoinQueryArr' forall a b. (a -> b) -> a -> b
$ do
let true :: PrimExpr
true = Literal -> PrimExpr
HPQ.ConstExpr (Bool -> Literal
HPQ.BoolLit Bool
True)
(r
r, PrimQuery
right) <- forall a. Select a -> State Tag (a, PrimQuery)
IQ.runSimpleSelect forall a b. (a -> b) -> a -> b
$ proc () -> do
a
a <- Select a
query -< ()
FieldNullable SqlBool
true_ <- forall a. Default Unpackspec a a => SelectArr a a
Rebind.rebind -< forall a. Field a -> FieldNullable a
Opaleye.Field.toNullable (forall (n :: Nullability) sqlType. PrimExpr -> Field_ n sqlType
IC.Column PrimExpr
true)
forall (a :: * -> * -> *) b. Arrow a => a b b
returnA -< FieldNullable SqlBool -> a -> r
f FieldNullable SqlBool
true_ a
a
forall (f :: * -> *) a. Applicative f => a -> f a
pure forall a b. (a -> b) -> a -> b
$ \() -> (r
r, PrimExpr
true, PrimQuery
right)
lateralLeftJoinOptional :: SelectArr i a
-> SelectArr i b
-> ((a, b) -> Opaleye.Field.Field Opaleye.SqlTypes.SqlBool)
-> SelectArr i (a, MaybeFields b)
lateralLeftJoinOptional :: forall i a b.
SelectArr i a
-> SelectArr i b
-> ((a, b) -> Field SqlBool)
-> SelectArr i (a, MaybeFields b)
lateralLeftJoinOptional SelectArr i a
fieldsL SelectArr i b
fieldsR (a, b) -> Field SqlBool
cond = proc i
i -> do
a
fieldsL' <- SelectArr i a
fieldsL -< i
i
MaybeFields b
maybeFieldsR' <- forall i a. SelectArr i a -> SelectArr i (MaybeFields a)
optional (proc (a
fieldsL', i
i) -> do
b
fieldsR' <- SelectArr i b
fieldsR -< i
i
SelectArr (Field SqlBool) ()
restrict -< (a, b) -> Field SqlBool
cond (a
fieldsL', b
fieldsR')
forall (a :: * -> * -> *) b. Arrow a => a b b
returnA -< b
fieldsR'
) -< (a
fieldsL', i
i)
forall (a :: * -> * -> *) b. Arrow a => a b b
returnA -< (a
fieldsL', MaybeFields b
maybeFieldsR')
optionalRestrictOptional :: Select a
-> SelectArr (a -> Field SqlBool) (MaybeFields a)
optionalRestrictOptional :: forall a.
Select a -> SelectArr (a -> Field SqlBool) (MaybeFields a)
optionalRestrictOptional Select a
q = forall i a. SelectArr i a -> SelectArr i (MaybeFields a)
optional forall a b. (a -> b) -> a -> b
$ proc a -> Field SqlBool
cond -> do
a
a <- Select a
q -< ()
SelectArr (Field SqlBool) ()
restrict -< a -> Field SqlBool
cond a
a
forall (a :: * -> * -> *) b. Arrow a => a b b
returnA -< a
a
nullableToMaybeFields :: Opaleye.Field.FieldNullable a -> MaybeFields (Field a)
nullableToMaybeFields :: forall a. FieldNullable a -> MaybeFields (Field a)
nullableToMaybeFields FieldNullable a
x = MaybeFields
{ mfPresent :: Column SqlBool
mfPresent = Field SqlBool -> Field SqlBool
Opaleye.Internal.Operators.not (forall {a}. FieldNullable a -> Field SqlBool
Opaleye.Field.isNull FieldNullable a
x)
, mfFields :: Field a
mfFields = forall a. FieldNullable a -> Field a
unsafeFromNonNull FieldNullable a
x
}
where unsafeFromNonNull :: Opaleye.Field.FieldNullable a -> Field a
unsafeFromNonNull :: forall a. FieldNullable a -> Field a
unsafeFromNonNull = forall (n :: Nullability) a (n' :: Nullability) b.
Field_ n a -> Field_ n' b
Opaleye.Field.unsafeCoerceField
maybeFieldsToNullable :: MaybeFields (Field a) -> Opaleye.Field.FieldNullable a
maybeFieldsToNullable :: forall a. MaybeFields (Field a) -> FieldNullable a
maybeFieldsToNullable MaybeFields (Field a)
x =
forall (n' :: Nullability) pgBool (n :: Nullability) a.
Field_ n' pgBool -> Field_ n a -> Field_ n a -> Field_ n a
IC.unsafeIfThenElse (forall fields. MaybeFields fields -> Column SqlBool
mfPresent MaybeFields (Field a)
x)
(forall a. Field a -> FieldNullable a
Opaleye.Field.toNullable (forall fields. MaybeFields fields -> fields
mfFields MaybeFields (Field a)
x))
forall a. FieldNullable a
Opaleye.Field.null
fromFieldsMaybeFields :: RQ.FromFields fields haskells
-> RQ.FromFields (MaybeFields fields) (Maybe haskells)
fromFieldsMaybeFields :: forall fields haskells.
FromFields fields haskells
-> FromFields (MaybeFields fields) (Maybe haskells)
fromFieldsMaybeFields (RQ.FromFields Unpackspec fields ()
u fields -> RowParser haskells
p fields -> Int
c) = forall fields haskells.
Unpackspec fields ()
-> (fields -> RowParser haskells)
-> (fields -> Int)
-> FromFields fields haskells
RQ.FromFields Unpackspec (MaybeFields fields) ()
u' MaybeFields fields -> RowParser (Maybe haskells)
p' MaybeFields fields -> Int
c'
where u' :: Unpackspec (MaybeFields fields) ()
u' = () forall (f :: * -> *) a b. Functor f => a -> f b -> f a
<$ forall (p :: * -> * -> *) a b.
ProductProfunctor p =>
p (Field SqlBool) (Field SqlBool)
-> p a b -> p (MaybeFields a) (MaybeFields b)
productProfunctorMaybeFields forall (n :: Nullability) a. Unpackspec (Field_ n a) (Field_ n a)
U.unpackspecField Unpackspec fields ()
u
p' :: MaybeFields fields -> RowParser (Maybe haskells)
p' = \MaybeFields fields
mf -> do
Bool
hIsPresent <- forall a. FromField a => RowParser a
PGSR.field
case Bool
hIsPresent of
Bool
True -> forall a. a -> Maybe a
Just forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> fields -> RowParser haskells
p (forall fields. MaybeFields fields -> fields
mfFields MaybeFields fields
mf)
Bool
False -> forall a. Maybe a
Nothing forall (f :: * -> *) a b. Functor f => a -> f b -> f a
<$ forall (m :: * -> *) a. Applicative m => Int -> m a -> m ()
replicateM_ (fields -> Int
c (forall fields. MaybeFields fields -> fields
mfFields MaybeFields fields
mf))
(forall a. FieldParser a -> RowParser a
PGSR.fieldWith (\Field
_ Maybe ByteString
_ -> forall (f :: * -> *) a. Applicative f => a -> f a
pure ()))
c' :: MaybeFields fields -> Int
c' = \MaybeFields fields
mf -> fields -> Int
c (forall fields. MaybeFields fields -> fields
mfFields MaybeFields fields
mf) forall a. Num a => a -> a -> a
+ Int
1
productProfunctorMaybeFields :: PP.ProductProfunctor p
=> p (Field SqlBool) (Field SqlBool)
-> p a b
-> p (MaybeFields a) (MaybeFields b)
productProfunctorMaybeFields :: forall (p :: * -> * -> *) a b.
ProductProfunctor p =>
p (Field SqlBool) (Field SqlBool)
-> p a b -> p (MaybeFields a) (MaybeFields b)
productProfunctorMaybeFields p (Field SqlBool) (Field SqlBool)
b p a b
p = forall fields. Column SqlBool -> fields -> MaybeFields fields
MaybeFields forall (p :: * -> * -> *) b c a.
Profunctor p =>
(b -> c) -> p a b -> p a c
PP.***$ forall (p :: * -> * -> *) a b c.
Profunctor p =>
(a -> b) -> p b c -> p a c
P.lmap forall fields. MaybeFields fields -> Column SqlBool
mfPresent p (Field SqlBool) (Field SqlBool)
b
forall (p :: * -> * -> *) a b c.
ProductProfunctor p =>
p a (b -> c) -> p a b -> p a c
PP.**** forall (p :: * -> * -> *) a b c.
Profunctor p =>
(a -> b) -> p b c -> p a c
P.lmap forall fields. MaybeFields fields -> fields
mfFields p a b
p
nullspecMaybeFields :: V.Nullspec a b
-> V.Nullspec (MaybeFields a) (MaybeFields b)
nullspecMaybeFields :: forall a b.
Nullspec a b -> Nullspec (MaybeFields a) (MaybeFields b)
nullspecMaybeFields = forall (p :: * -> * -> *) a b.
ProductProfunctor p =>
p (Field SqlBool) (Field SqlBool)
-> p a b -> p (MaybeFields a) (MaybeFields b)
productProfunctorMaybeFields forall a (n :: Nullability) sqlType.
IsSqlType sqlType =>
Nullspec a (Field_ n sqlType)
V.nullspecField
unpackspecMaybeFields :: U.Unpackspec a b
-> U.Unpackspec (MaybeFields a) (MaybeFields b)
unpackspecMaybeFields :: forall a b.
Unpackspec a b -> Unpackspec (MaybeFields a) (MaybeFields b)
unpackspecMaybeFields = forall (p :: * -> * -> *) a b.
ProductProfunctor p =>
p (Field SqlBool) (Field SqlBool)
-> p a b -> p (MaybeFields a) (MaybeFields b)
productProfunctorMaybeFields forall (n :: Nullability) a. Unpackspec (Field_ n a) (Field_ n a)
U.unpackspecField
valuesspecMaybeFields :: V.Valuesspec a b
-> V.Valuesspec (MaybeFields a) (MaybeFields b)
valuesspecMaybeFields :: forall a b.
Valuesspec a b -> Valuesspec (MaybeFields a) (MaybeFields b)
valuesspecMaybeFields = forall (p :: * -> * -> *) a b.
ProductProfunctor p =>
p (Field SqlBool) (Field SqlBool)
-> p a b -> p (MaybeFields a) (MaybeFields b)
productProfunctorMaybeFields forall a (n :: Nullability).
IsSqlType a =>
Valuesspec (Field_ n a) (Field_ n a)
V.valuesspecField
toFieldsMaybeFields :: V.Nullspec a b
-> Constant.ToFields a b
-> Constant.ToFields (Maybe a) (MaybeFields b)
toFieldsMaybeFields :: forall a b.
Nullspec a b -> ToFields a b -> ToFields (Maybe a) (MaybeFields b)
toFieldsMaybeFields Nullspec a b
n ToFields a b
p = forall haskells fields.
(haskells -> fields) -> ToFields haskells fields
Constant.toToFields forall a b. (a -> b) -> a -> b
$ \case
Maybe a
Nothing -> forall a b. Nullspec a b -> MaybeFields b
nothingFieldsExplicit Nullspec a b
n
Just a
a -> forall a. a -> MaybeFields a
justFields (forall haskells fields.
ToFields haskells fields -> haskells -> fields
Constant.toFieldsExplicit ToFields a b
p a
a)
ifPPMaybeFields :: IfPP a b -> IfPP (MaybeFields a) (MaybeFields b)
ifPPMaybeFields :: forall a b. IfPP a b -> IfPP (MaybeFields a) (MaybeFields b)
ifPPMaybeFields = forall (p :: * -> * -> *) a b.
ProductProfunctor p =>
p (Field SqlBool) (Field SqlBool)
-> p a b -> p (MaybeFields a) (MaybeFields b)
productProfunctorMaybeFields forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def
eqPPMaybeFields :: EqPP a b -> EqPP (MaybeFields a) (MaybeFields b)
eqPPMaybeFields :: forall a b. EqPP a b -> EqPP (MaybeFields a) (MaybeFields b)
eqPPMaybeFields (EqPP a -> a -> Field SqlBool
eqFields) = forall a b. (a -> a -> Field SqlBool) -> EqPP a b
EqPP (\MaybeFields a
m1 MaybeFields a
m2 ->
(forall fields. MaybeFields fields -> Column SqlBool
mfPresent MaybeFields a
m1 forall columns.
Default EqPP columns columns =>
columns -> columns -> Field SqlBool
.== forall fields. MaybeFields fields -> Column SqlBool
mfPresent MaybeFields a
m2)
Field SqlBool -> Field SqlBool -> Field SqlBool
.&& (forall fields. MaybeFields fields -> Column SqlBool
mfPresent MaybeFields a
m1 Field SqlBool -> Field SqlBool -> Field SqlBool
`implies` a -> a -> Field SqlBool
eqFields (forall fields. MaybeFields fields -> fields
mfFields MaybeFields a
m1) (forall fields. MaybeFields fields -> fields
mfFields MaybeFields a
m2)))
where Field SqlBool
a implies :: Field SqlBool -> Field SqlBool -> Field SqlBool
`implies` Field SqlBool
b = Field SqlBool -> Field SqlBool
Opaleye.Internal.Operators.not Field SqlBool
a Field SqlBool -> Field SqlBool -> Field SqlBool
.|| Field SqlBool
b
unWithNulls :: PP.ProductProfunctor p
=> p (Field SqlBool) (Field SqlBool)
-> WithNulls p a b
-> p (MaybeFields a) (MaybeFields b)
unWithNulls :: forall (p :: * -> * -> *) a b.
ProductProfunctor p =>
p (Field SqlBool) (Field SqlBool)
-> WithNulls p a b -> p (MaybeFields a) (MaybeFields b)
unWithNulls p (Field SqlBool) (Field SqlBool)
b (WithNulls p (MaybeFields a) b
d) =
forall fields. Column SqlBool -> fields -> MaybeFields fields
MaybeFields forall (p :: * -> * -> *) b c a.
Profunctor p =>
(b -> c) -> p a b -> p a c
PP.***$ forall (p :: * -> * -> *) a b c.
Profunctor p =>
(a -> b) -> p b c -> p a c
P.lmap forall fields. MaybeFields fields -> Column SqlBool
mfPresent p (Field SqlBool) (Field SqlBool)
b
forall (p :: * -> * -> *) a b c.
ProductProfunctor p =>
p a (b -> c) -> p a b -> p a c
PP.**** p (MaybeFields a) b
d
newtype WithNulls p a b =
WithNulls (p (MaybeFields a) b)
mapMaybeFieldsWithNulls :: PP.ProductProfunctor p
=> p (Field SqlBool) (Field SqlBool)
-> WithNulls p a b
-> WithNulls p (MaybeFields a) (MaybeFields b)
mapMaybeFieldsWithNulls :: forall (p :: * -> * -> *) a b.
ProductProfunctor p =>
p (Field SqlBool) (Field SqlBool)
-> WithNulls p a b -> WithNulls p (MaybeFields a) (MaybeFields b)
mapMaybeFieldsWithNulls p (Field SqlBool) (Field SqlBool)
b WithNulls p a b
d =
forall fields. Column SqlBool -> fields -> MaybeFields fields
MaybeFields forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> forall (p :: * -> * -> *) a b c.
Profunctor p =>
(a -> b) -> p b c -> p a c
P.lmap forall fields. MaybeFields fields -> Column SqlBool
mfPresent (forall a (p :: * -> * -> *) (n :: Nullability).
(IsSqlType a, Profunctor p) =>
p (Field_ n a) (Field_ n a)
-> WithNulls p (Field_ n a) (Field_ n a)
withNullsField p (Field SqlBool) (Field SqlBool)
b)
forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
<*> forall (p :: * -> * -> *) a b c.
Profunctor p =>
(a -> b) -> p b c -> p a c
P.lmap forall fields. MaybeFields fields -> fields
mfFields WithNulls p a b
d
withNullsField :: (IsSqlType a, P.Profunctor p)
=> p (IC.Field_ n a) (IC.Field_ n a)
-> WithNulls p (IC.Field_ n a) (IC.Field_ n a)
withNullsField :: forall a (p :: * -> * -> *) (n :: Nullability).
(IsSqlType a, Profunctor p) =>
p (Field_ n a) (Field_ n a)
-> WithNulls p (Field_ n a) (Field_ n a)
withNullsField p (Field_ n a) (Field_ n a)
col = WithNulls p (Field_ n a) (Field_ n a)
result
where result :: WithNulls p (Field_ n a) (Field_ n a)
result = forall (p :: * -> * -> *) a b.
p (MaybeFields a) b -> WithNulls p a b
WithNulls (forall (p :: * -> * -> *) a b c.
Profunctor p =>
(a -> b) -> p b c -> p a c
P.lmap (\(MaybeFields Column SqlBool
b Field_ n a
c) ->
forall columns columns'.
IfPP columns columns'
-> Field SqlBool -> columns -> columns -> columns'
ifExplict forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def Column SqlBool
b Field_ n a
c forall {n :: Nullability}. Field_ n a
nullC) p (Field_ n a) (Field_ n a)
col)
nullC :: Field_ n a
nullC = forall a fields. Nullspec a fields -> fields
V.nullFields forall a (n :: Nullability) sqlType.
IsSqlType sqlType =>
Nullspec a (Field_ n sqlType)
V.nullspecField
binaryspecMaybeFields
:: WithNulls B.Binaryspec a b
-> B.Binaryspec (MaybeFields a) (MaybeFields b)
binaryspecMaybeFields :: forall a b.
WithNulls Binaryspec a b
-> Binaryspec (MaybeFields a) (MaybeFields b)
binaryspecMaybeFields = forall (p :: * -> * -> *) a b.
ProductProfunctor p =>
p (Field SqlBool) (Field SqlBool)
-> WithNulls p a b -> p (MaybeFields a) (MaybeFields b)
unWithNulls forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def
instance P.Profunctor p => P.Profunctor (WithNulls p) where
dimap :: forall a b c d.
(a -> b) -> (c -> d) -> WithNulls p b c -> WithNulls p a d
dimap a -> b
f c -> d
g (WithNulls p (MaybeFields b) c
d) = forall (p :: * -> * -> *) a b.
p (MaybeFields a) b -> WithNulls p a b
WithNulls (forall (p :: * -> * -> *) a b c d.
Profunctor p =>
(a -> b) -> (c -> d) -> p b c -> p a d
P.dimap (forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap a -> b
f) c -> d
g p (MaybeFields b) c
d)
instance P.Profunctor p => Functor (WithNulls p a) where
fmap :: forall a b. (a -> b) -> WithNulls p a a -> WithNulls p a b
fmap = forall (p :: * -> * -> *) b c a.
Profunctor p =>
(b -> c) -> p a b -> p a c
P.rmap
instance PP.ProductProfunctor p => Applicative (WithNulls p a) where
pure :: forall a. a -> WithNulls p a a
pure = forall (p :: * -> * -> *) a b.
p (MaybeFields a) b -> WithNulls p a b
WithNulls forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall (p :: * -> * -> *) b a. ProductProfunctor p => b -> p a b
PP.purePP
WithNulls p (MaybeFields a) (a -> b)
fd <*> :: forall a b.
WithNulls p a (a -> b) -> WithNulls p a a -> WithNulls p a b
<*> WithNulls p (MaybeFields a) a
xd = forall (p :: * -> * -> *) a b.
p (MaybeFields a) b -> WithNulls p a b
WithNulls (p (MaybeFields a) (a -> b)
fd forall (p :: * -> * -> *) a b c.
ProductProfunctor p =>
p a (b -> c) -> p a b -> p a c
PP.**** p (MaybeFields a) a
xd)
instance PP.ProductProfunctor p => PP.ProductProfunctor (WithNulls p) where
purePP :: forall b a. b -> WithNulls p a b
purePP = forall (f :: * -> *) a. Applicative f => a -> f a
pure
**** :: forall a b c.
WithNulls p a (b -> c) -> WithNulls p a b -> WithNulls p a c
(****) = forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
(<*>)
instance PP.SumProfunctor p => PP.SumProfunctor (WithNulls p) where
WithNulls p (MaybeFields a) b
ff +++! :: forall a b a' b'.
WithNulls p a b
-> WithNulls p a' b' -> WithNulls p (Either a a') (Either b b')
+++! WithNulls p (MaybeFields a') b'
xf =
forall (p :: * -> * -> *) a b.
p (MaybeFields a) b -> WithNulls p a b
WithNulls (forall a b c. (a -> b -> c) -> b -> a -> c
flip forall (p :: * -> * -> *) a b c.
Profunctor p =>
(a -> b) -> p b c -> p a c
P.lmap (p (MaybeFields a) b
ff forall (p :: * -> * -> *) a b a' b'.
SumProfunctor p =>
p a b -> p a' b' -> p (Either a a') (Either b b')
PP.+++! p (MaybeFields a') b'
xf) forall a b. (a -> b) -> a -> b
$ \case
MaybeFields Column SqlBool
b (Left a
l) -> forall a b. a -> Either a b
Left (forall fields. Column SqlBool -> fields -> MaybeFields fields
MaybeFields Column SqlBool
b a
l)
MaybeFields Column SqlBool
b (Right a'
r) -> forall a b. b -> Either a b
Right (forall fields. Column SqlBool -> fields -> MaybeFields fields
MaybeFields Column SqlBool
b a'
r))
instance PP.Default RQ.FromFields fields haskells
=> PP.Default RQ.FromFields (MaybeFields fields) (Maybe haskells) where
def :: FromFields (MaybeFields fields) (Maybe haskells)
def = forall fields haskells.
FromFields fields haskells
-> FromFields (MaybeFields fields) (Maybe haskells)
fromFieldsMaybeFields forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def
instance PP.Default U.Unpackspec a b
=> PP.Default U.Unpackspec (MaybeFields a) (MaybeFields b) where
def :: Unpackspec (MaybeFields a) (MaybeFields b)
def = forall a b.
Unpackspec a b -> Unpackspec (MaybeFields a) (MaybeFields b)
unpackspecMaybeFields forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def
instance PP.Default V.Valuesspec a b
=> PP.Default V.Valuesspec (MaybeFields a) (MaybeFields b) where
def :: Valuesspec (MaybeFields a) (MaybeFields b)
def = forall a b.
Valuesspec a b -> Valuesspec (MaybeFields a) (MaybeFields b)
valuesspecMaybeFields forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def
instance (PP.Default Constant.ToFields a b, PP.Default V.Nullspec a b)
=> PP.Default Constant.ToFields (Maybe a) (MaybeFields b) where
def :: ToFields (Maybe a) (MaybeFields b)
def = forall a b.
Nullspec a b -> ToFields a b -> ToFields (Maybe a) (MaybeFields b)
toFieldsMaybeFields forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def
instance PP.Default IfPP a b
=> PP.Default IfPP (MaybeFields a) (MaybeFields b) where
def :: IfPP (MaybeFields a) (MaybeFields b)
def = forall a b. IfPP a b -> IfPP (MaybeFields a) (MaybeFields b)
ifPPMaybeFields forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def
instance PP.Default EqPP a b
=> PP.Default EqPP (MaybeFields a) (MaybeFields b) where
def :: EqPP (MaybeFields a) (MaybeFields b)
def = forall a b. EqPP a b -> EqPP (MaybeFields a) (MaybeFields b)
eqPPMaybeFields forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def
instance (P.Profunctor p, IsSqlType a, PP.Default p (IC.Field_ n a) (IC.Field_ n a))
=> PP.Default (WithNulls p) (IC.Field_ n a) (IC.Field_ n a) where
def :: WithNulls p (Field_ n a) (Field_ n a)
def = forall a (p :: * -> * -> *) (n :: Nullability).
(IsSqlType a, Profunctor p) =>
p (Field_ n a) (Field_ n a)
-> WithNulls p (Field_ n a) (Field_ n a)
withNullsField forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def
instance PP.Default (WithNulls B.Binaryspec) a b
=> PP.Default B.Binaryspec (MaybeFields a) (MaybeFields b) where
def :: Binaryspec (MaybeFields a) (MaybeFields b)
def = forall a b.
WithNulls Binaryspec a b
-> Binaryspec (MaybeFields a) (MaybeFields b)
binaryspecMaybeFields forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def
instance (PP.Default (Inferrable RQ.FromFields) fields haskells,
Maybe haskells ~ maybe_haskells)
=> PP.Default (Inferrable RQ.FromFields) (MaybeFields fields) maybe_haskells where
def :: Inferrable FromFields (MaybeFields fields) maybe_haskells
def = forall (p :: * -> * -> *) a b. p a b -> Inferrable p a b
Inferrable (forall fields haskells.
FromFields fields haskells
-> FromFields (MaybeFields fields) (Maybe haskells)
fromFieldsMaybeFields (forall (p :: * -> * -> *) a b. Inferrable p a b -> p a b
runInferrable forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def))
instance (PP.Default (Inferrable Constant.ToFields) a b, PP.Default V.Nullspec a b,
MaybeFields b ~ maybeFields_b)
=> PP.Default (Inferrable Constant.ToFields) (Maybe a) maybeFields_b where
def :: Inferrable ToFields (Maybe a) maybeFields_b
def = forall (p :: * -> * -> *) a b. p a b -> Inferrable p a b
Inferrable (forall a b.
Nullspec a b -> ToFields a b -> ToFields (Maybe a) (MaybeFields b)
toFieldsMaybeFields forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def (forall (p :: * -> * -> *) a b. Inferrable p a b -> p a b
runInferrable forall (p :: * -> * -> *) a b. Default p a b => p a b
PP.def))