Amazonka.Glue.Types.Mapping

Documentation

data Mapping

Specifies the mapping of data property keys.

See: newMapping smart constructor.

Constructors

Mapping'

Fields

• children :: Maybe [Mapping]

  Only applicable to nested data structures. If you want to change the parent structure, but also one of its children, you can fill out this data strucutre. It is also Mapping, but its FromPath will be the parent's FromPath plus the FromPath from this structure.

  For the children part, suppose you have the structure:

  { "FromPath": "OuterStructure", "ToKey": "OuterStructure", "ToType": "Struct", "Dropped": false, "Chidlren": [{ "FromPath": "inner", "ToKey": "inner", "ToType": "Double", "Dropped": false, }] }

  You can specify a Mapping that looks like:

  { "FromPath": "OuterStructure", "ToKey": "OuterStructure", "ToType": "Struct", "Dropped": false, "Chidlren": [{ "FromPath": "inner", "ToKey": "inner", "ToType": "Double", "Dropped": false, }] }

• dropped :: Maybe Bool

  If true, then the column is removed.

• fromPath :: Maybe [Text]

  The table or column to be modified.

• fromType :: Maybe Text

  The type of the data to be modified.

• toKey :: Maybe Text

  After the apply mapping, what the name of the column should be. Can be the same as FromPath.

• toType :: Maybe Text

  The data type that the data is to be modified to.

Instances

FromJSON Mapping

Defined in Amazonka.Glue.Types.Mapping

Methods

parseJSON :: Value -> Parser Mapping

parseJSONList :: Value -> Parser [Mapping]

ToJSON Mapping

Defined in Amazonka.Glue.Types.Mapping

Methods

toJSON :: Mapping -> Value

toEncoding :: Mapping -> Encoding

toJSONList :: [Mapping] -> Value

toEncodingList :: [Mapping] -> Encoding

Generic Mapping

Defined in Amazonka.Glue.Types.Mapping

Associated Types

type Rep Mapping :: Type -> Type

Methods

from :: Mapping -> Rep Mapping x

to :: Rep Mapping x -> Mapping

Read Mapping

Defined in Amazonka.Glue.Types.Mapping

Methods

readsPrec :: Int -> ReadS Mapping

readList :: ReadS [Mapping]

readPrec :: ReadPrec Mapping

readListPrec :: ReadPrec [Mapping]

Show Mapping

Defined in Amazonka.Glue.Types.Mapping

Methods

showsPrec :: Int -> Mapping -> ShowS

show :: Mapping -> String

showList :: [Mapping] -> ShowS

NFData Mapping

Defined in Amazonka.Glue.Types.Mapping

Methods

rnf :: Mapping -> ()

Eq Mapping

Defined in Amazonka.Glue.Types.Mapping

Methods

(==) :: Mapping -> Mapping -> Bool

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

Hashable Mapping

Defined in Amazonka.Glue.Types.Mapping

Methods

hashWithSalt :: Int -> Mapping -> Int

hash :: Mapping -> Int

type Rep Mapping

Defined in Amazonka.Glue.Types.Mapping

type Rep Mapping = D1 ('MetaData "Mapping" "Amazonka.Glue.Types.Mapping" "amazonka-glue-2.0-7miPWwBHdfn8N8SvbpLgE0" 'False) (C1 ('MetaCons "Mapping'" 'PrefixI 'True) ((S1 ('MetaSel ('Just "children") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [Mapping])) :*: (S1 ('MetaSel ('Just "dropped") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Bool)) :*: S1 ('MetaSel ('Just "fromPath") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [Text])))) :*: (S1 ('MetaSel ('Just "fromType") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Text)) :*: (S1 ('MetaSel ('Just "toKey") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Text)) :*: S1 ('MetaSel ('Just "toType") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Text))))))

newMapping :: Mapping

Create a value of Mapping 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:children:Mapping', mapping_children - Only applicable to nested data structures. If you want to change the parent structure, but also one of its children, you can fill out this data strucutre. It is also Mapping, but its FromPath will be the parent's FromPath plus the FromPath from this structure.

For the children part, suppose you have the structure:

{ "FromPath": "OuterStructure", "ToKey": "OuterStructure", "ToType": "Struct", "Dropped": false, "Chidlren": [{ "FromPath": "inner", "ToKey": "inner", "ToType": "Double", "Dropped": false, }] }

You can specify a Mapping that looks like:

{ "FromPath": "OuterStructure", "ToKey": "OuterStructure", "ToType": "Struct", "Dropped": false, "Chidlren": [{ "FromPath": "inner", "ToKey": "inner", "ToType": "Double", "Dropped": false, }] }

$sel:dropped:Mapping', mapping_dropped - If true, then the column is removed.

$sel:fromPath:Mapping', mapping_fromPath - The table or column to be modified.

$sel:fromType:Mapping', mapping_fromType - The type of the data to be modified.

$sel:toKey:Mapping', mapping_toKey - After the apply mapping, what the name of the column should be. Can be the same as FromPath.

$sel:toType:Mapping', mapping_toType - The data type that the data is to be modified to.

mapping_children :: Lens' Mapping (Maybe [Mapping])

Only applicable to nested data structures. If you want to change the parent structure, but also one of its children, you can fill out this data strucutre. It is also Mapping, but its FromPath will be the parent's FromPath plus the FromPath from this structure.

For the children part, suppose you have the structure:

{ "FromPath": "OuterStructure", "ToKey": "OuterStructure", "ToType": "Struct", "Dropped": false, "Chidlren": [{ "FromPath": "inner", "ToKey": "inner", "ToType": "Double", "Dropped": false, }] }

You can specify a Mapping that looks like:

{ "FromPath": "OuterStructure", "ToKey": "OuterStructure", "ToType": "Struct", "Dropped": false, "Chidlren": [{ "FromPath": "inner", "ToKey": "inner", "ToType": "Double", "Dropped": false, }] }

mapping_dropped :: Lens' Mapping (Maybe Bool)

If true, then the column is removed.

mapping_fromPath :: Lens' Mapping (Maybe [Text])

The table or column to be modified.

mapping_fromType :: Lens' Mapping (Maybe Text)

The type of the data to be modified.

mapping_toKey :: Lens' Mapping (Maybe Text)

After the apply mapping, what the name of the column should be. Can be the same as FromPath.

mapping_toType :: Lens' Mapping (Maybe Text)

The data type that the data is to be modified to.