Copyright	(c) 2013-2023 Brendan Hay
License	Mozilla Public License, v. 2.0.
Maintainer	Brendan Hay
Stability	auto-generated
Portability	non-portable (GHC extensions)
Safe Haskell	Safe-Inferred
Language	Haskell2010

Amazonka.AmplifyUiBuilder.Types.Predicate

Description

Synopsis

data Predicate = Predicate' {
- and :: Maybe [Predicate]
- field :: Maybe Text
- operand :: Maybe Text
- operator :: Maybe Text
- or :: Maybe [Predicate]
}
newPredicate :: Predicate
predicate_and :: Lens' Predicate (Maybe [Predicate])
predicate_field :: Lens' Predicate (Maybe Text)
predicate_operand :: Lens' Predicate (Maybe Text)
predicate_operator :: Lens' Predicate (Maybe Text)
predicate_or :: Lens' Predicate (Maybe [Predicate])

Documentation

data Predicate Source #

Stores information for generating Amplify DataStore queries. Use a Predicate to retrieve a subset of the data in a collection.

See: newPredicate smart constructor.

Constructors

Predicate'
Fields and :: Maybe [Predicate] A list of predicates to combine logically. field :: Maybe Text The field to query. operand :: Maybe Text The value to use when performing the evaluation. operator :: Maybe Text The operator to use to perform the evaluation. or :: Maybe [Predicate] A list of predicates to combine logically.

Instances

Instances details

FromJSON Predicate Source #
Instance details Defined in Amazonka.AmplifyUiBuilder.Types.Predicate Methods parseJSON :: Value -> Parser Predicate # parseJSONList :: Value -> Parser [Predicate] #
ToJSON Predicate Source #
Instance details Defined in Amazonka.AmplifyUiBuilder.Types.Predicate Methods toJSON :: Predicate -> Value # toEncoding :: Predicate -> Encoding # toJSONList :: [Predicate] -> Value # toEncodingList :: [Predicate] -> Encoding #
Generic Predicate Source #
Instance details Defined in Amazonka.AmplifyUiBuilder.Types.Predicate Associated Types type Rep Predicate :: Type -> Type # Methods from :: Predicate -> Rep Predicate x # to :: Rep Predicate x -> Predicate #
Read Predicate Source #
Instance details Defined in Amazonka.AmplifyUiBuilder.Types.Predicate Methods readsPrec :: Int -> ReadS Predicate # readList :: ReadS [Predicate] # readPrec :: ReadPrec Predicate # readListPrec :: ReadPrec [Predicate] #
Show Predicate Source #
Instance details Defined in Amazonka.AmplifyUiBuilder.Types.Predicate Methods showsPrec :: Int -> Predicate -> ShowS # show :: Predicate -> String # showList :: [Predicate] -> ShowS #
NFData Predicate Source #
Instance details Defined in Amazonka.AmplifyUiBuilder.Types.Predicate Methods rnf :: Predicate -> () #
Eq Predicate Source #
Instance details Defined in Amazonka.AmplifyUiBuilder.Types.Predicate Methods (==) :: Predicate -> Predicate -> Bool # (/=) :: Predicate -> Predicate -> Bool #
Hashable Predicate Source #
Instance details Defined in Amazonka.AmplifyUiBuilder.Types.Predicate Methods hashWithSalt :: Int -> Predicate -> Int # hash :: Predicate -> Int #
type Rep Predicate Source #
Instance details Defined in Amazonka.AmplifyUiBuilder.Types.Predicate type Rep Predicate = D1 ('MetaData "Predicate" "Amazonka.AmplifyUiBuilder.Types.Predicate" "amazonka-amplifyuibuilder-2.0-KN0MRaPu7dZCAXr3ruBTcC" 'False) (C1 ('MetaCons "Predicate'" 'PrefixI 'True) ((S1 ('MetaSel ('Just "and") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [Predicate])) :: S1 ('MetaSel ('Just "field") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Text))) :: (S1 ('MetaSel ('Just "operand") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Text)) :: (S1 ('MetaSel ('Just "operator") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Text)) :: S1 ('MetaSel ('Just "or") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [Predicate]))))))

newPredicate :: Predicate Source #

Create a value of Predicate with all optional fields omitted.

Use generic-lens or optics to modify other optional fields.

The following record fields are available, with the corresponding lenses provided for backwards compatibility:

$sel:and:Predicate', predicate_and - A list of predicates to combine logically.

$sel:field:Predicate', predicate_field - The field to query.

$sel:operand:Predicate', predicate_operand - The value to use when performing the evaluation.

$sel:operator:Predicate', predicate_operator - The operator to use to perform the evaluation.

$sel:or:Predicate', predicate_or - A list of predicates to combine logically.

predicate_and :: Lens' Predicate (Maybe [Predicate]) Source #

A list of predicates to combine logically.

predicate_field :: Lens' Predicate (Maybe Text) Source #

The field to query.

predicate_operand :: Lens' Predicate (Maybe Text) Source #

The value to use when performing the evaluation.

predicate_operator :: Lens' Predicate (Maybe Text) Source #

The operator to use to perform the evaluation.

predicate_or :: Lens' Predicate (Maybe [Predicate]) Source #

A list of predicates to combine logically.