{-# 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.JoinColumn
-- 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.JoinColumn 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 a column to be joined.
--
-- /See:/ 'newJoinColumn' smart constructor.
data JoinColumn = JoinColumn'
  { -- | The column to be joined.
    JoinColumn -> Text
from :: Prelude.Text,
    -- | The key of the column to be joined.
    JoinColumn -> [[Text]]
keys :: [[Prelude.Text]]
  }
  deriving (JoinColumn -> JoinColumn -> Bool
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: JoinColumn -> JoinColumn -> Bool
$c/= :: JoinColumn -> JoinColumn -> Bool
== :: JoinColumn -> JoinColumn -> Bool
$c== :: JoinColumn -> JoinColumn -> Bool
Prelude.Eq, ReadPrec [JoinColumn]
ReadPrec JoinColumn
Int -> ReadS JoinColumn
ReadS [JoinColumn]
forall a.
(Int -> ReadS a)
-> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
readListPrec :: ReadPrec [JoinColumn]
$creadListPrec :: ReadPrec [JoinColumn]
readPrec :: ReadPrec JoinColumn
$creadPrec :: ReadPrec JoinColumn
readList :: ReadS [JoinColumn]
$creadList :: ReadS [JoinColumn]
readsPrec :: Int -> ReadS JoinColumn
$creadsPrec :: Int -> ReadS JoinColumn
Prelude.Read, Int -> JoinColumn -> ShowS
[JoinColumn] -> ShowS
JoinColumn -> String
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [JoinColumn] -> ShowS
$cshowList :: [JoinColumn] -> ShowS
show :: JoinColumn -> String
$cshow :: JoinColumn -> String
showsPrec :: Int -> JoinColumn -> ShowS
$cshowsPrec :: Int -> JoinColumn -> ShowS
Prelude.Show, forall x. Rep JoinColumn x -> JoinColumn
forall x. JoinColumn -> Rep JoinColumn x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep JoinColumn x -> JoinColumn
$cfrom :: forall x. JoinColumn -> Rep JoinColumn x
Prelude.Generic)

-- |
-- Create a value of 'JoinColumn' 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:
--
-- 'from', 'joinColumn_from' - The column to be joined.
--
-- 'keys', 'joinColumn_keys' - The key of the column to be joined.
newJoinColumn ::
  -- | 'from'
  Prelude.Text ->
  JoinColumn
newJoinColumn :: Text -> JoinColumn
newJoinColumn Text
pFrom_ =
  JoinColumn' {$sel:from:JoinColumn' :: Text
from = Text
pFrom_, $sel:keys:JoinColumn' :: [[Text]]
keys = forall a. Monoid a => a
Prelude.mempty}

-- | The column to be joined.
joinColumn_from :: Lens.Lens' JoinColumn Prelude.Text
joinColumn_from :: Lens' JoinColumn Text
joinColumn_from = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\JoinColumn' {Text
from :: Text
$sel:from:JoinColumn' :: JoinColumn -> Text
from} -> Text
from) (\s :: JoinColumn
s@JoinColumn' {} Text
a -> JoinColumn
s {$sel:from:JoinColumn' :: Text
from = Text
a} :: JoinColumn)

-- | The key of the column to be joined.
joinColumn_keys :: Lens.Lens' JoinColumn [[Prelude.Text]]
joinColumn_keys :: Lens' JoinColumn [[Text]]
joinColumn_keys = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\JoinColumn' {[[Text]]
keys :: [[Text]]
$sel:keys:JoinColumn' :: JoinColumn -> [[Text]]
keys} -> [[Text]]
keys) (\s :: JoinColumn
s@JoinColumn' {} [[Text]]
a -> JoinColumn
s {$sel:keys:JoinColumn' :: [[Text]]
keys = [[Text]]
a} :: JoinColumn) forall b c a. (b -> c) -> (a -> b) -> a -> c
Prelude.. forall s t a b. (Coercible s a, Coercible t b) => Iso s t a b
Lens.coerced

instance Data.FromJSON JoinColumn where
  parseJSON :: Value -> Parser JoinColumn
parseJSON =
    forall a. String -> (Object -> Parser a) -> Value -> Parser a
Data.withObject
      String
"JoinColumn"
      ( \Object
x ->
          Text -> [[Text]] -> JoinColumn
JoinColumn'
            forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
Prelude.<$> (Object
x forall a. FromJSON a => Object -> Key -> Parser a
Data..: Key
"From")
            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
"Keys" forall a. Parser (Maybe a) -> a -> Parser a
Data..!= forall a. Monoid a => a
Prelude.mempty)
      )

instance Prelude.Hashable JoinColumn where
  hashWithSalt :: Int -> JoinColumn -> Int
hashWithSalt Int
_salt JoinColumn' {[[Text]]
Text
keys :: [[Text]]
from :: Text
$sel:keys:JoinColumn' :: JoinColumn -> [[Text]]
$sel:from:JoinColumn' :: JoinColumn -> Text
..} =
    Int
_salt
      forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` Text
from
      forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` [[Text]]
keys

instance Prelude.NFData JoinColumn where
  rnf :: JoinColumn -> ()
rnf JoinColumn' {[[Text]]
Text
keys :: [[Text]]
from :: Text
$sel:keys:JoinColumn' :: JoinColumn -> [[Text]]
$sel:from:JoinColumn' :: JoinColumn -> Text
..} =
    forall a. NFData a => a -> ()
Prelude.rnf Text
from seq :: forall a b. a -> b -> b
`Prelude.seq` forall a. NFData a => a -> ()
Prelude.rnf [[Text]]
keys

instance Data.ToJSON JoinColumn where
  toJSON :: JoinColumn -> Value
toJSON JoinColumn' {[[Text]]
Text
keys :: [[Text]]
from :: Text
$sel:keys:JoinColumn' :: JoinColumn -> [[Text]]
$sel:from:JoinColumn' :: JoinColumn -> Text
..} =
    [Pair] -> Value
Data.object
      ( forall a. [Maybe a] -> [a]
Prelude.catMaybes
          [ forall a. a -> Maybe a
Prelude.Just (Key
"From" forall kv v. (KeyValue kv, ToJSON v) => Key -> v -> kv
Data..= Text
from),
            forall a. a -> Maybe a
Prelude.Just (Key
"Keys" forall kv v. (KeyValue kv, ToJSON v) => Key -> v -> kv
Data..= [[Text]]
keys)
          ]
      )