Copyright	(c) Eitan Chatav 2019
Maintainer	[email protected]
Stability	experimental
Safe Haskell	None
Language	Haskell2010

Squeal.PostgreSQL.Expression.Range

Contents

Range
Range Function

Description

range types and functions

Synopsis

data Range x
- = Empty
- | NonEmpty (Bound x) (Bound x)
(<=..<=) :: x -> x -> Range x
(<..<) :: x -> x -> Range x
(<=..<) :: x -> x -> Range x
(<..<=) :: x -> x -> Range x
moreThan :: x -> Range x
atLeast :: x -> Range x
lessThan :: x -> Range x
atMost :: x -> Range x
singleton :: x -> Range x
whole :: Range x
data Bound x
- = Infinite
- | Closed x
- | Open x
range :: TypeExpression db (null (PGrange ty)) -> Range (Expression grp lat with db params from (NotNull ty)) -> Expression grp lat with db params from (null (PGrange ty))
(.<@) :: Operator (NotNull ty) (null (PGrange ty)) (Null PGbool)
(@>.) :: Operator (null (PGrange ty)) (NotNull ty) (Null PGbool)
(<<@) :: Operator (null (PGrange ty)) (null (PGrange ty)) (Null PGbool)
(@>>) :: Operator (null (PGrange ty)) (null (PGrange ty)) (Null PGbool)
(&<) :: Operator (null (PGrange ty)) (null (PGrange ty)) (Null PGbool)
(&>) :: Operator (null (PGrange ty)) (null (PGrange ty)) (Null PGbool)
(-|-) :: Operator (null (PGrange ty)) (null (PGrange ty)) (Null PGbool)
(@+) :: Operator (null (PGrange ty)) (null (PGrange ty)) (null (PGrange ty))
(@*) :: Operator (null (PGrange ty)) (null (PGrange ty)) (null (PGrange ty))
(@-) :: Operator (null (PGrange ty)) (null (PGrange ty)) (null (PGrange ty))
lowerBound :: null (PGrange ty) --> Null ty
upperBound :: null (PGrange ty) --> Null ty
isEmpty :: null (PGrange ty) --> Null PGbool
lowerInc :: null (PGrange ty) --> Null PGbool
lowerInf :: null (PGrange ty) --> Null PGbool
upperInc :: null (PGrange ty) --> Null PGbool
upperInf :: null (PGrange ty) --> Null PGbool
rangeMerge :: '[null (PGrange ty), null (PGrange ty)] ---> null (PGrange ty)

Range

data Range x Source #

A Range datatype that comprises connected subsets of the real line.

Constructors

Empty
NonEmpty (Bound x) (Bound x)

Instances

Functor Range Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods fmap :: (a -> b) -> Range a -> Range b # (<$) :: a -> Range b -> Range a #
Foldable Range Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods fold :: Monoid m => Range m -> m # foldMap :: Monoid m => (a -> m) -> Range a -> m # foldr :: (a -> b -> b) -> b -> Range a -> b # foldr' :: (a -> b -> b) -> b -> Range a -> b # foldl :: (b -> a -> b) -> b -> Range a -> b # foldl' :: (b -> a -> b) -> b -> Range a -> b # foldr1 :: (a -> a -> a) -> Range a -> a # foldl1 :: (a -> a -> a) -> Range a -> a # toList :: Range a -> [a] # null :: Range a -> Bool # length :: Range a -> Int # elem :: Eq a => a -> Range a -> Bool # maximum :: Ord a => Range a -> a # minimum :: Ord a => Range a -> a # sum :: Num a => Range a -> a # product :: Num a => Range a -> a #
Traversable Range Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods traverse :: Applicative f => (a -> f b) -> Range a -> f (Range b) # sequenceA :: Applicative f => Range (f a) -> f (Range a) # mapM :: Monad m => (a -> m b) -> Range a -> m (Range b) # sequence :: Monad m => Range (m a) -> m (Range a) #
ToPG db x => ToPG db (Range x) Source #
Instance details Defined in Squeal.PostgreSQL.Session.Encode Methods toPG :: Range x -> ReaderT (K Connection db) IO Encoding Source #
Eq x => Eq (Range x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods (==) :: Range x -> Range x -> Bool # (/=) :: Range x -> Range x -> Bool #
Ord x => Ord (Range x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods compare :: Range x -> Range x -> Ordering # (<) :: Range x -> Range x -> Bool # (<=) :: Range x -> Range x -> Bool # (>) :: Range x -> Range x -> Bool # (>=) :: Range x -> Range x -> Bool # max :: Range x -> Range x -> Range x # min :: Range x -> Range x -> Range x #
Read x => Read (Range x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods readsPrec :: Int -> ReadS (Range x) # readList :: ReadS [Range x] # readPrec :: ReadPrec (Range x) # readListPrec :: ReadPrec [Range x] #
Show x => Show (Range x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods showsPrec :: Int -> Range x -> ShowS # show :: Range x -> String # showList :: [Range x] -> ShowS #
Generic (Range x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Associated Types type Rep (Range x) :: Type -> Type # Methods from :: Range x -> Rep (Range x) x0 # to :: Rep (Range x) x0 -> Range x #
Generic (Range x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Associated Types type Code (Range x) :: [[Type]] # Methods from :: Range x -> Rep (Range x) # to :: Rep (Range x) -> Range x #
HasDatatypeInfo (Range x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Associated Types type DatatypeInfoOf (Range x) :: DatatypeInfo # Methods datatypeInfo :: proxy (Range x) -> DatatypeInfo (Code (Range x)) #
IsPG hask => IsPG (Range hask) Source #	`PGrange` `(PG` `hask)`
Instance details Defined in Squeal.PostgreSQL.Expression.Range Associated Types type PG (Range hask) :: PGType Source #
FromPG y => FromPG (Range y) Source #
Instance details Defined in Squeal.PostgreSQL.Session.Decode Methods fromPG :: StateT ByteString (Except Text) (Range y) Source #
Inline (Range Int32) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Inline Methods inline :: Range Int32 -> Expr (null (PG (Range Int32))) Source #
Inline (Range Int64) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Inline Methods inline :: Range Int64 -> Expr (null (PG (Range Int64))) Source #
Inline (Range Scientific) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Inline Methods inline :: Range Scientific -> Expr (null (PG (Range Scientific))) Source #
Inline (Range UTCTime) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Inline Methods inline :: Range UTCTime -> Expr (null (PG (Range UTCTime))) Source #
Inline (Range Day) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Inline Methods inline :: Range Day -> Expr (null (PG (Range Day))) Source #
Inline (Range LocalTime) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Inline Methods inline :: Range LocalTime -> Expr (null (PG (Range LocalTime))) Source #
type Rep (Range x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range type Rep (Range x) = D1 (MetaData "Range" "Squeal.PostgreSQL.Expression.Range" "squeal-postgresql-0.6.0.2-55PJjSRSXxzaZJfRqaJ60" False) (C1 (MetaCons "Empty" PrefixI False) (U1 :: Type -> Type) :+: C1 (MetaCons "NonEmpty" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 (Bound x)) :*: S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 (Bound x))))
type Code (Range x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range type Code (Range x) = GCode (Range x)
type DatatypeInfoOf (Range x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range type DatatypeInfoOf (Range x) = GDatatypeInfoOf (Range x)
type PG (Range hask) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range type PG (Range hask) = PGrange (PG hask)

(<=..<=) :: x -> x -> Range x infix 4 Source #

Finite Range constructor

(<..<) :: x -> x -> Range x infix 4 Source #

Finite Range constructor

(<=..<) :: x -> x -> Range x infix 4 Source #

Finite Range constructor

(<..<=) :: x -> x -> Range x infix 4 Source #

Finite Range constructor

moreThan :: x -> Range x Source #

Half-infinite Range constructor

atLeast :: x -> Range x Source #

Half-infinite Range constructor

lessThan :: x -> Range x Source #

Half-infinite Range constructor

atMost :: x -> Range x Source #

Half-infinite Range constructor

singleton :: x -> Range x Source #

A point on the line

whole :: Range x Source #

The whole line

data Bound x Source #

The type of Bound for a Range.

Constructors

Infinite	unbounded
Closed x	inclusive
Open x	exclusive

Instances

Functor Bound Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods fmap :: (a -> b) -> Bound a -> Bound b # (<$) :: a -> Bound b -> Bound a #
Foldable Bound Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods fold :: Monoid m => Bound m -> m # foldMap :: Monoid m => (a -> m) -> Bound a -> m # foldr :: (a -> b -> b) -> b -> Bound a -> b # foldr' :: (a -> b -> b) -> b -> Bound a -> b # foldl :: (b -> a -> b) -> b -> Bound a -> b # foldl' :: (b -> a -> b) -> b -> Bound a -> b # foldr1 :: (a -> a -> a) -> Bound a -> a # foldl1 :: (a -> a -> a) -> Bound a -> a # toList :: Bound a -> [a] # null :: Bound a -> Bool # length :: Bound a -> Int # elem :: Eq a => a -> Bound a -> Bool # maximum :: Ord a => Bound a -> a # minimum :: Ord a => Bound a -> a # sum :: Num a => Bound a -> a # product :: Num a => Bound a -> a #
Traversable Bound Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods traverse :: Applicative f => (a -> f b) -> Bound a -> f (Bound b) # sequenceA :: Applicative f => Bound (f a) -> f (Bound a) # mapM :: Monad m => (a -> m b) -> Bound a -> m (Bound b) # sequence :: Monad m => Bound (m a) -> m (Bound a) #
Eq x => Eq (Bound x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods (==) :: Bound x -> Bound x -> Bool # (/=) :: Bound x -> Bound x -> Bool #
Ord x => Ord (Bound x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods compare :: Bound x -> Bound x -> Ordering # (<) :: Bound x -> Bound x -> Bool # (<=) :: Bound x -> Bound x -> Bool # (>) :: Bound x -> Bound x -> Bool # (>=) :: Bound x -> Bound x -> Bool # max :: Bound x -> Bound x -> Bound x # min :: Bound x -> Bound x -> Bound x #
Read x => Read (Bound x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods readsPrec :: Int -> ReadS (Bound x) # readList :: ReadS [Bound x] # readPrec :: ReadPrec (Bound x) # readListPrec :: ReadPrec [Bound x] #
Show x => Show (Bound x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Methods showsPrec :: Int -> Bound x -> ShowS # show :: Bound x -> String # showList :: [Bound x] -> ShowS #
Generic (Bound x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range Associated Types type Rep (Bound x) :: Type -> Type # Methods from :: Bound x -> Rep (Bound x) x0 # to :: Rep (Bound x) x0 -> Bound x #
type Rep (Bound x) Source #
Instance details Defined in Squeal.PostgreSQL.Expression.Range type Rep (Bound x) = D1 (MetaData "Bound" "Squeal.PostgreSQL.Expression.Range" "squeal-postgresql-0.6.0.2-55PJjSRSXxzaZJfRqaJ60" False) (C1 (MetaCons "Infinite" PrefixI False) (U1 :: Type -> Type) :+: (C1 (MetaCons "Closed" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 x)) :+: C1 (MetaCons "Open" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 x))))

Range Function

Range Construction

range Source #

Arguments

:: TypeExpression db (null (PGrange ty))	range type
-> Range (Expression grp lat with db params from (NotNull ty))	range of values
-> Expression grp lat with db params from (null (PGrange ty))

Construct a range

>>> printSQL $ range tstzrange (atLeast now)
tstzrange(now(), NULL, '[)')
>>> printSQL $ range numrange (0 <=..< 2*pi)
numrange((0.0 :: numeric), ((2.0 :: numeric) * pi()), '[)')
>>> printSQL $ range int4range Empty
('empty' :: int4range)

Range Operator

(.<@) :: Operator (NotNull ty) (null (PGrange ty)) (Null PGbool) Source #

range is contained by

(@>.) :: Operator (null (PGrange ty)) (NotNull ty) (Null PGbool) Source #

contains range

(<<@) :: Operator (null (PGrange ty)) (null (PGrange ty)) (Null PGbool) Source #

strictly left of, return false when an empty range is involved

(@>>) :: Operator (null (PGrange ty)) (null (PGrange ty)) (Null PGbool) Source #

strictly right of, return false when an empty range is involved

(&<) :: Operator (null (PGrange ty)) (null (PGrange ty)) (Null PGbool) Source #

does not extend to the right of, return false when an empty range is involved

(&>) :: Operator (null (PGrange ty)) (null (PGrange ty)) (Null PGbool) Source #

does not extend to the left of, return false when an empty range is involved

(-|-) :: Operator (null (PGrange ty)) (null (PGrange ty)) (Null PGbool) Source #

is adjacent to, return false when an empty range is involved

(@+) :: Operator (null (PGrange ty)) (null (PGrange ty)) (null (PGrange ty)) Source #

union, will fail if the resulting range would need to contain two disjoint sub-ranges

(@*) :: Operator (null (PGrange ty)) (null (PGrange ty)) (null (PGrange ty)) Source #

intersection

(@-) :: Operator (null (PGrange ty)) (null (PGrange ty)) (null (PGrange ty)) Source #

difference, will fail if the resulting range would need to contain two disjoint sub-ranges

Range Function

lowerBound :: null (PGrange ty) --> Null ty Source #

lower bound of range

upperBound :: null (PGrange ty) --> Null ty Source #

upper bound of range

isEmpty :: null (PGrange ty) --> Null PGbool Source #

is the range empty?

lowerInc :: null (PGrange ty) --> Null PGbool Source #

is the lower bound inclusive?

lowerInf :: null (PGrange ty) --> Null PGbool Source #

is the lower bound infinite?

upperInc :: null (PGrange ty) --> Null PGbool Source #

is the upper bound inclusive?

upperInf :: null (PGrange ty) --> Null PGbool Source #

is the upper bound infinite?

rangeMerge :: '[null (PGrange ty), null (PGrange ty)] ---> null (PGrange ty) Source #

the smallest range which includes both of the given ranges