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.Glue.Types.DropNullFields

Description

Documentation

data DropNullFields Source #

Specifies a transform that removes columns from the dataset if all values in the column are 'null'. By default, Glue Studio will recognize null objects, but some values such as empty strings, strings that are "null", -1 integers or other placeholders such as zeros, are not automatically recognized as nulls.

See: newDropNullFields smart constructor.

Constructors

DropNullFields'

Fields

nullCheckBoxList :: Maybe NullCheckBoxList
A structure that represents whether certain values are recognized as null values for removal.
nullTextList :: Maybe [NullValueField]
A structure that specifies a list of NullValueField structures that represent a custom null value such as zero or other value being used as a null placeholder unique to the dataset.
The DropNullFields transform removes custom null values only if both the value of the null placeholder and the datatype match the data.
name :: Text
The name of the transform node.
inputs :: NonEmpty Text
The data inputs identified by their node names.

Instances

Instances details

FromJSON DropNullFields Source #
Instance details Defined in Amazonka.Glue.Types.DropNullFields Methods parseJSON :: Value -> Parser DropNullFields # parseJSONList :: Value -> Parser [DropNullFields] #
ToJSON DropNullFields Source #
Instance details Defined in Amazonka.Glue.Types.DropNullFields Methods toJSON :: DropNullFields -> Value # toEncoding :: DropNullFields -> Encoding # toJSONList :: [DropNullFields] -> Value # toEncodingList :: [DropNullFields] -> Encoding #
Generic DropNullFields Source #
Instance details Defined in Amazonka.Glue.Types.DropNullFields Associated Types type Rep DropNullFields :: Type -> Type # Methods from :: DropNullFields -> Rep DropNullFields x # to :: Rep DropNullFields x -> DropNullFields #
Read DropNullFields Source #
Instance details Defined in Amazonka.Glue.Types.DropNullFields Methods readsPrec :: Int -> ReadS DropNullFields # readList :: ReadS [DropNullFields] # readPrec :: ReadPrec DropNullFields # readListPrec :: ReadPrec [DropNullFields] #
Show DropNullFields Source #
Instance details Defined in Amazonka.Glue.Types.DropNullFields Methods showsPrec :: Int -> DropNullFields -> ShowS # show :: DropNullFields -> String # showList :: [DropNullFields] -> ShowS #
NFData DropNullFields Source #
Instance details Defined in Amazonka.Glue.Types.DropNullFields Methods rnf :: DropNullFields -> () #
Eq DropNullFields Source #
Instance details Defined in Amazonka.Glue.Types.DropNullFields Methods (==) :: DropNullFields -> DropNullFields -> Bool # (/=) :: DropNullFields -> DropNullFields -> Bool #
Hashable DropNullFields Source #
Instance details Defined in Amazonka.Glue.Types.DropNullFields Methods hashWithSalt :: Int -> DropNullFields -> Int # hash :: DropNullFields -> Int #
type Rep DropNullFields Source #
Instance details Defined in Amazonka.Glue.Types.DropNullFields type Rep DropNullFields = D1 ('MetaData "DropNullFields" "Amazonka.Glue.Types.DropNullFields" "amazonka-glue-2.0-7miPWwBHdfn8N8SvbpLgE0" 'False) (C1 ('MetaCons "DropNullFields'" 'PrefixI 'True) ((S1 ('MetaSel ('Just "nullCheckBoxList") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe NullCheckBoxList)) :: S1 ('MetaSel ('Just "nullTextList") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [NullValueField]))) :: (S1 ('MetaSel ('Just "name") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 Text) :*: S1 ('MetaSel ('Just "inputs") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (NonEmpty Text)))))

newDropNullFields Source #

Arguments

:: Text	`$sel:name:DropNullFields'`
-> NonEmpty Text	`$sel:inputs:DropNullFields'`
-> DropNullFields

Create a value of DropNullFields 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:nullCheckBoxList:DropNullFields', dropNullFields_nullCheckBoxList - A structure that represents whether certain values are recognized as null values for removal.

$sel:nullTextList:DropNullFields', dropNullFields_nullTextList - A structure that specifies a list of NullValueField structures that represent a custom null value such as zero or other value being used as a null placeholder unique to the dataset.

The DropNullFields transform removes custom null values only if both the value of the null placeholder and the datatype match the data.

$sel:name:DropNullFields', dropNullFields_name - The name of the transform node.

$sel:inputs:DropNullFields', dropNullFields_inputs - The data inputs identified by their node names.

dropNullFields_nullCheckBoxList :: Lens' DropNullFields (Maybe NullCheckBoxList) Source #

A structure that represents whether certain values are recognized as null values for removal.

dropNullFields_nullTextList :: Lens' DropNullFields (Maybe [NullValueField]) Source #

A structure that specifies a list of NullValueField structures that represent a custom null value such as zero or other value being used as a null placeholder unique to the dataset.

The DropNullFields transform removes custom null values only if both the value of the null placeholder and the datatype match the data.

dropNullFields_name :: Lens' DropNullFields Text Source #

The name of the transform node.

dropNullFields_inputs :: Lens' DropNullFields (NonEmpty Text) Source #

The data inputs identified by their node names.