Amazonka.AmplifyUiBuilder.Types.Predicate

Documentation

data Predicate

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

FromJSON Predicate

Defined in Amazonka.AmplifyUiBuilder.Types.Predicate

Methods

parseJSON :: Value -> Parser Predicate

parseJSONList :: Value -> Parser [Predicate]

ToJSON Predicate

Defined in Amazonka.AmplifyUiBuilder.Types.Predicate

Methods

toJSON :: Predicate -> Value

toEncoding :: Predicate -> Encoding

toJSONList :: [Predicate] -> Value

toEncodingList :: [Predicate] -> Encoding

Generic Predicate

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

Defined in Amazonka.AmplifyUiBuilder.Types.Predicate

Methods

readsPrec :: Int -> ReadS Predicate

readList :: ReadS [Predicate]

readPrec :: ReadPrec Predicate

readListPrec :: ReadPrec [Predicate]

Show Predicate

Defined in Amazonka.AmplifyUiBuilder.Types.Predicate

Methods

showsPrec :: Int -> Predicate -> ShowS

show :: Predicate -> String

showList :: [Predicate] -> ShowS

NFData Predicate

Defined in Amazonka.AmplifyUiBuilder.Types.Predicate

Methods

rnf :: Predicate -> ()

Eq Predicate

Defined in Amazonka.AmplifyUiBuilder.Types.Predicate

Methods

(==) :: Predicate -> Predicate -> Bool

(/=) :: Predicate -> Predicate -> Bool

Hashable Predicate

Defined in Amazonka.AmplifyUiBuilder.Types.Predicate

Methods

hashWithSalt :: Int -> Predicate -> Int

hash :: Predicate -> Int

type Rep Predicate

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

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])

A list of predicates to combine logically.

predicate_field :: Lens' Predicate (Maybe Text)

The field to query.

predicate_operand :: Lens' Predicate (Maybe Text)

The value to use when performing the evaluation.

predicate_operator :: Lens' Predicate (Maybe Text)

The operator to use to perform the evaluation.

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

A list of predicates to combine logically.