{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE StrictData #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# OPTIONS_GHC -fno-warn-unused-imports #-}
{-# OPTIONS_GHC -fno-warn-unused-matches #-}

-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- |
-- Module      : Amazonka.Glue.Types.SkewedInfo
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
module Amazonka.Glue.Types.SkewedInfo where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import qualified Amazonka.Prelude as Prelude

-- | Specifies skewed values in a table. Skewed values are those that occur
-- with very high frequency.
--
-- /See:/ 'newSkewedInfo' smart constructor.
data SkewedInfo = SkewedInfo'
  { -- | A list of names of columns that contain skewed values.
    SkewedInfo -> Maybe [Text]
skewedColumnNames :: Prelude.Maybe [Prelude.Text],
    -- | A mapping of skewed values to the columns that contain them.
    SkewedInfo -> Maybe (HashMap Text Text)
skewedColumnValueLocationMaps :: Prelude.Maybe (Prelude.HashMap Prelude.Text Prelude.Text),
    -- | A list of values that appear so frequently as to be considered skewed.
    SkewedInfo -> Maybe [Text]
skewedColumnValues :: Prelude.Maybe [Prelude.Text]
  }
  deriving (SkewedInfo -> SkewedInfo -> Bool
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: SkewedInfo -> SkewedInfo -> Bool
$c/= :: SkewedInfo -> SkewedInfo -> Bool
== :: SkewedInfo -> SkewedInfo -> Bool
$c== :: SkewedInfo -> SkewedInfo -> Bool
Prelude.Eq, ReadPrec [SkewedInfo]
ReadPrec SkewedInfo
Int -> ReadS SkewedInfo
ReadS [SkewedInfo]
forall a.
(Int -> ReadS a)
-> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
readListPrec :: ReadPrec [SkewedInfo]
$creadListPrec :: ReadPrec [SkewedInfo]
readPrec :: ReadPrec SkewedInfo
$creadPrec :: ReadPrec SkewedInfo
readList :: ReadS [SkewedInfo]
$creadList :: ReadS [SkewedInfo]
readsPrec :: Int -> ReadS SkewedInfo
$creadsPrec :: Int -> ReadS SkewedInfo
Prelude.Read, Int -> SkewedInfo -> ShowS
[SkewedInfo] -> ShowS
SkewedInfo -> String
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [SkewedInfo] -> ShowS
$cshowList :: [SkewedInfo] -> ShowS
show :: SkewedInfo -> String
$cshow :: SkewedInfo -> String
showsPrec :: Int -> SkewedInfo -> ShowS
$cshowsPrec :: Int -> SkewedInfo -> ShowS
Prelude.Show, forall x. Rep SkewedInfo x -> SkewedInfo
forall x. SkewedInfo -> Rep SkewedInfo x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep SkewedInfo x -> SkewedInfo
$cfrom :: forall x. SkewedInfo -> Rep SkewedInfo x
Prelude.Generic)

-- |
-- Create a value of 'SkewedInfo' with all optional fields omitted.
--
-- Use <https://hackage.haskell.org/package/generic-lens generic-lens> or <https://hackage.haskell.org/package/optics optics> to modify other optional fields.
--
-- The following record fields are available, with the corresponding lenses provided
-- for backwards compatibility:
--
-- 'skewedColumnNames', 'skewedInfo_skewedColumnNames' - A list of names of columns that contain skewed values.
--
-- 'skewedColumnValueLocationMaps', 'skewedInfo_skewedColumnValueLocationMaps' - A mapping of skewed values to the columns that contain them.
--
-- 'skewedColumnValues', 'skewedInfo_skewedColumnValues' - A list of values that appear so frequently as to be considered skewed.
newSkewedInfo ::
  SkewedInfo
newSkewedInfo :: SkewedInfo
newSkewedInfo =
  SkewedInfo'
    { $sel:skewedColumnNames:SkewedInfo' :: Maybe [Text]
skewedColumnNames = forall a. Maybe a
Prelude.Nothing,
      $sel:skewedColumnValueLocationMaps:SkewedInfo' :: Maybe (HashMap Text Text)
skewedColumnValueLocationMaps = forall a. Maybe a
Prelude.Nothing,
      $sel:skewedColumnValues:SkewedInfo' :: Maybe [Text]
skewedColumnValues = forall a. Maybe a
Prelude.Nothing
    }

-- | A list of names of columns that contain skewed values.
skewedInfo_skewedColumnNames :: Lens.Lens' SkewedInfo (Prelude.Maybe [Prelude.Text])
skewedInfo_skewedColumnNames :: Lens' SkewedInfo (Maybe [Text])
skewedInfo_skewedColumnNames = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\SkewedInfo' {Maybe [Text]
skewedColumnNames :: Maybe [Text]
$sel:skewedColumnNames:SkewedInfo' :: SkewedInfo -> Maybe [Text]
skewedColumnNames} -> Maybe [Text]
skewedColumnNames) (\s :: SkewedInfo
s@SkewedInfo' {} Maybe [Text]
a -> SkewedInfo
s {$sel:skewedColumnNames:SkewedInfo' :: Maybe [Text]
skewedColumnNames = Maybe [Text]
a} :: SkewedInfo) forall b c a. (b -> c) -> (a -> b) -> a -> c
Prelude.. forall (f :: * -> *) (g :: * -> *) s t a b.
(Functor f, Functor g) =>
AnIso s t a b -> Iso (f s) (g t) (f a) (g b)
Lens.mapping forall s t a b. (Coercible s a, Coercible t b) => Iso s t a b
Lens.coerced

-- | A mapping of skewed values to the columns that contain them.
skewedInfo_skewedColumnValueLocationMaps :: Lens.Lens' SkewedInfo (Prelude.Maybe (Prelude.HashMap Prelude.Text Prelude.Text))
skewedInfo_skewedColumnValueLocationMaps :: Lens' SkewedInfo (Maybe (HashMap Text Text))
skewedInfo_skewedColumnValueLocationMaps = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\SkewedInfo' {Maybe (HashMap Text Text)
skewedColumnValueLocationMaps :: Maybe (HashMap Text Text)
$sel:skewedColumnValueLocationMaps:SkewedInfo' :: SkewedInfo -> Maybe (HashMap Text Text)
skewedColumnValueLocationMaps} -> Maybe (HashMap Text Text)
skewedColumnValueLocationMaps) (\s :: SkewedInfo
s@SkewedInfo' {} Maybe (HashMap Text Text)
a -> SkewedInfo
s {$sel:skewedColumnValueLocationMaps:SkewedInfo' :: Maybe (HashMap Text Text)
skewedColumnValueLocationMaps = Maybe (HashMap Text Text)
a} :: SkewedInfo) forall b c a. (b -> c) -> (a -> b) -> a -> c
Prelude.. forall (f :: * -> *) (g :: * -> *) s t a b.
(Functor f, Functor g) =>
AnIso s t a b -> Iso (f s) (g t) (f a) (g b)
Lens.mapping forall s t a b. (Coercible s a, Coercible t b) => Iso s t a b
Lens.coerced

-- | A list of values that appear so frequently as to be considered skewed.
skewedInfo_skewedColumnValues :: Lens.Lens' SkewedInfo (Prelude.Maybe [Prelude.Text])
skewedInfo_skewedColumnValues :: Lens' SkewedInfo (Maybe [Text])
skewedInfo_skewedColumnValues = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\SkewedInfo' {Maybe [Text]
skewedColumnValues :: Maybe [Text]
$sel:skewedColumnValues:SkewedInfo' :: SkewedInfo -> Maybe [Text]
skewedColumnValues} -> Maybe [Text]
skewedColumnValues) (\s :: SkewedInfo
s@SkewedInfo' {} Maybe [Text]
a -> SkewedInfo
s {$sel:skewedColumnValues:SkewedInfo' :: Maybe [Text]
skewedColumnValues = Maybe [Text]
a} :: SkewedInfo) forall b c a. (b -> c) -> (a -> b) -> a -> c
Prelude.. forall (f :: * -> *) (g :: * -> *) s t a b.
(Functor f, Functor g) =>
AnIso s t a b -> Iso (f s) (g t) (f a) (g b)
Lens.mapping forall s t a b. (Coercible s a, Coercible t b) => Iso s t a b
Lens.coerced

instance Data.FromJSON SkewedInfo where
  parseJSON :: Value -> Parser SkewedInfo
parseJSON =
    forall a. String -> (Object -> Parser a) -> Value -> Parser a
Data.withObject
      String
"SkewedInfo"
      ( \Object
x ->
          Maybe [Text]
-> Maybe (HashMap Text Text) -> Maybe [Text] -> SkewedInfo
SkewedInfo'
            forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
Prelude.<$> ( Object
x
                            forall a. FromJSON a => Object -> Key -> Parser (Maybe a)
Data..:? Key
"SkewedColumnNames"
                            forall a. Parser (Maybe a) -> a -> Parser a
Data..!= forall a. Monoid a => a
Prelude.mempty
                        )
            forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
Prelude.<*> ( Object
x
                            forall a. FromJSON a => Object -> Key -> Parser (Maybe a)
Data..:? Key
"SkewedColumnValueLocationMaps"
                            forall a. Parser (Maybe a) -> a -> Parser a
Data..!= forall a. Monoid a => a
Prelude.mempty
                        )
            forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
Prelude.<*> ( Object
x
                            forall a. FromJSON a => Object -> Key -> Parser (Maybe a)
Data..:? Key
"SkewedColumnValues"
                            forall a. Parser (Maybe a) -> a -> Parser a
Data..!= forall a. Monoid a => a
Prelude.mempty
                        )
      )

instance Prelude.Hashable SkewedInfo where
  hashWithSalt :: Int -> SkewedInfo -> Int
hashWithSalt Int
_salt SkewedInfo' {Maybe [Text]
Maybe (HashMap Text Text)
skewedColumnValues :: Maybe [Text]
skewedColumnValueLocationMaps :: Maybe (HashMap Text Text)
skewedColumnNames :: Maybe [Text]
$sel:skewedColumnValues:SkewedInfo' :: SkewedInfo -> Maybe [Text]
$sel:skewedColumnValueLocationMaps:SkewedInfo' :: SkewedInfo -> Maybe (HashMap Text Text)
$sel:skewedColumnNames:SkewedInfo' :: SkewedInfo -> Maybe [Text]
..} =
    Int
_salt
      forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` Maybe [Text]
skewedColumnNames
      forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` Maybe (HashMap Text Text)
skewedColumnValueLocationMaps
      forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` Maybe [Text]
skewedColumnValues

instance Prelude.NFData SkewedInfo where
  rnf :: SkewedInfo -> ()
rnf SkewedInfo' {Maybe [Text]
Maybe (HashMap Text Text)
skewedColumnValues :: Maybe [Text]
skewedColumnValueLocationMaps :: Maybe (HashMap Text Text)
skewedColumnNames :: Maybe [Text]
$sel:skewedColumnValues:SkewedInfo' :: SkewedInfo -> Maybe [Text]
$sel:skewedColumnValueLocationMaps:SkewedInfo' :: SkewedInfo -> Maybe (HashMap Text Text)
$sel:skewedColumnNames:SkewedInfo' :: SkewedInfo -> Maybe [Text]
..} =
    forall a. NFData a => a -> ()
Prelude.rnf Maybe [Text]
skewedColumnNames
      seq :: forall a b. a -> b -> b
`Prelude.seq` forall a. NFData a => a -> ()
Prelude.rnf Maybe (HashMap Text Text)
skewedColumnValueLocationMaps
      seq :: forall a b. a -> b -> b
`Prelude.seq` forall a. NFData a => a -> ()
Prelude.rnf Maybe [Text]
skewedColumnValues

instance Data.ToJSON SkewedInfo where
  toJSON :: SkewedInfo -> Value
toJSON SkewedInfo' {Maybe [Text]
Maybe (HashMap Text Text)
skewedColumnValues :: Maybe [Text]
skewedColumnValueLocationMaps :: Maybe (HashMap Text Text)
skewedColumnNames :: Maybe [Text]
$sel:skewedColumnValues:SkewedInfo' :: SkewedInfo -> Maybe [Text]
$sel:skewedColumnValueLocationMaps:SkewedInfo' :: SkewedInfo -> Maybe (HashMap Text Text)
$sel:skewedColumnNames:SkewedInfo' :: SkewedInfo -> Maybe [Text]
..} =
    [Pair] -> Value
Data.object
      ( forall a. [Maybe a] -> [a]
Prelude.catMaybes
          [ (Key
"SkewedColumnNames" forall kv v. (KeyValue kv, ToJSON v) => Key -> v -> kv
Data..=)
              forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
Prelude.<$> Maybe [Text]
skewedColumnNames,
            (Key
"SkewedColumnValueLocationMaps" forall kv v. (KeyValue kv, ToJSON v) => Key -> v -> kv
Data..=)
              forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
Prelude.<$> Maybe (HashMap Text Text)
skewedColumnValueLocationMaps,
            (Key
"SkewedColumnValues" forall kv v. (KeyValue kv, ToJSON v) => Key -> v -> kv
Data..=)
              forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
Prelude.<$> Maybe [Text]
skewedColumnValues
          ]
      )