{-# 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.SchemaChangePolicy
-- 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.SchemaChangePolicy where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import Amazonka.Glue.Types.DeleteBehavior
import Amazonka.Glue.Types.UpdateBehavior
import qualified Amazonka.Prelude as Prelude

-- | A policy that specifies update and deletion behaviors for the crawler.
--
-- /See:/ 'newSchemaChangePolicy' smart constructor.
data SchemaChangePolicy = SchemaChangePolicy'
  { -- | The deletion behavior when the crawler finds a deleted object.
    SchemaChangePolicy -> Maybe DeleteBehavior
deleteBehavior :: Prelude.Maybe DeleteBehavior,
    -- | The update behavior when the crawler finds a changed schema.
    SchemaChangePolicy -> Maybe UpdateBehavior
updateBehavior :: Prelude.Maybe UpdateBehavior
  }
  deriving (SchemaChangePolicy -> SchemaChangePolicy -> Bool
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: SchemaChangePolicy -> SchemaChangePolicy -> Bool
$c/= :: SchemaChangePolicy -> SchemaChangePolicy -> Bool
== :: SchemaChangePolicy -> SchemaChangePolicy -> Bool
$c== :: SchemaChangePolicy -> SchemaChangePolicy -> Bool
Prelude.Eq, ReadPrec [SchemaChangePolicy]
ReadPrec SchemaChangePolicy
Int -> ReadS SchemaChangePolicy
ReadS [SchemaChangePolicy]
forall a.
(Int -> ReadS a)
-> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
readListPrec :: ReadPrec [SchemaChangePolicy]
$creadListPrec :: ReadPrec [SchemaChangePolicy]
readPrec :: ReadPrec SchemaChangePolicy
$creadPrec :: ReadPrec SchemaChangePolicy
readList :: ReadS [SchemaChangePolicy]
$creadList :: ReadS [SchemaChangePolicy]
readsPrec :: Int -> ReadS SchemaChangePolicy
$creadsPrec :: Int -> ReadS SchemaChangePolicy
Prelude.Read, Int -> SchemaChangePolicy -> ShowS
[SchemaChangePolicy] -> ShowS
SchemaChangePolicy -> String
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [SchemaChangePolicy] -> ShowS
$cshowList :: [SchemaChangePolicy] -> ShowS
show :: SchemaChangePolicy -> String
$cshow :: SchemaChangePolicy -> String
showsPrec :: Int -> SchemaChangePolicy -> ShowS
$cshowsPrec :: Int -> SchemaChangePolicy -> ShowS
Prelude.Show, forall x. Rep SchemaChangePolicy x -> SchemaChangePolicy
forall x. SchemaChangePolicy -> Rep SchemaChangePolicy x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep SchemaChangePolicy x -> SchemaChangePolicy
$cfrom :: forall x. SchemaChangePolicy -> Rep SchemaChangePolicy x
Prelude.Generic)

-- |
-- Create a value of 'SchemaChangePolicy' 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:
--
-- 'deleteBehavior', 'schemaChangePolicy_deleteBehavior' - The deletion behavior when the crawler finds a deleted object.
--
-- 'updateBehavior', 'schemaChangePolicy_updateBehavior' - The update behavior when the crawler finds a changed schema.
newSchemaChangePolicy ::
  SchemaChangePolicy
newSchemaChangePolicy :: SchemaChangePolicy
newSchemaChangePolicy =
  SchemaChangePolicy'
    { $sel:deleteBehavior:SchemaChangePolicy' :: Maybe DeleteBehavior
deleteBehavior =
        forall a. Maybe a
Prelude.Nothing,
      $sel:updateBehavior:SchemaChangePolicy' :: Maybe UpdateBehavior
updateBehavior = forall a. Maybe a
Prelude.Nothing
    }

-- | The deletion behavior when the crawler finds a deleted object.
schemaChangePolicy_deleteBehavior :: Lens.Lens' SchemaChangePolicy (Prelude.Maybe DeleteBehavior)
schemaChangePolicy_deleteBehavior :: Lens' SchemaChangePolicy (Maybe DeleteBehavior)
schemaChangePolicy_deleteBehavior = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\SchemaChangePolicy' {Maybe DeleteBehavior
deleteBehavior :: Maybe DeleteBehavior
$sel:deleteBehavior:SchemaChangePolicy' :: SchemaChangePolicy -> Maybe DeleteBehavior
deleteBehavior} -> Maybe DeleteBehavior
deleteBehavior) (\s :: SchemaChangePolicy
s@SchemaChangePolicy' {} Maybe DeleteBehavior
a -> SchemaChangePolicy
s {$sel:deleteBehavior:SchemaChangePolicy' :: Maybe DeleteBehavior
deleteBehavior = Maybe DeleteBehavior
a} :: SchemaChangePolicy)

-- | The update behavior when the crawler finds a changed schema.
schemaChangePolicy_updateBehavior :: Lens.Lens' SchemaChangePolicy (Prelude.Maybe UpdateBehavior)
schemaChangePolicy_updateBehavior :: Lens' SchemaChangePolicy (Maybe UpdateBehavior)
schemaChangePolicy_updateBehavior = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\SchemaChangePolicy' {Maybe UpdateBehavior
updateBehavior :: Maybe UpdateBehavior
$sel:updateBehavior:SchemaChangePolicy' :: SchemaChangePolicy -> Maybe UpdateBehavior
updateBehavior} -> Maybe UpdateBehavior
updateBehavior) (\s :: SchemaChangePolicy
s@SchemaChangePolicy' {} Maybe UpdateBehavior
a -> SchemaChangePolicy
s {$sel:updateBehavior:SchemaChangePolicy' :: Maybe UpdateBehavior
updateBehavior = Maybe UpdateBehavior
a} :: SchemaChangePolicy)

instance Data.FromJSON SchemaChangePolicy where
  parseJSON :: Value -> Parser SchemaChangePolicy
parseJSON =
    forall a. String -> (Object -> Parser a) -> Value -> Parser a
Data.withObject
      String
"SchemaChangePolicy"
      ( \Object
x ->
          Maybe DeleteBehavior -> Maybe UpdateBehavior -> SchemaChangePolicy
SchemaChangePolicy'
            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
"DeleteBehavior")
            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
"UpdateBehavior")
      )

instance Prelude.Hashable SchemaChangePolicy where
  hashWithSalt :: Int -> SchemaChangePolicy -> Int
hashWithSalt Int
_salt SchemaChangePolicy' {Maybe DeleteBehavior
Maybe UpdateBehavior
updateBehavior :: Maybe UpdateBehavior
deleteBehavior :: Maybe DeleteBehavior
$sel:updateBehavior:SchemaChangePolicy' :: SchemaChangePolicy -> Maybe UpdateBehavior
$sel:deleteBehavior:SchemaChangePolicy' :: SchemaChangePolicy -> Maybe DeleteBehavior
..} =
    Int
_salt
      forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` Maybe DeleteBehavior
deleteBehavior
      forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` Maybe UpdateBehavior
updateBehavior

instance Prelude.NFData SchemaChangePolicy where
  rnf :: SchemaChangePolicy -> ()
rnf SchemaChangePolicy' {Maybe DeleteBehavior
Maybe UpdateBehavior
updateBehavior :: Maybe UpdateBehavior
deleteBehavior :: Maybe DeleteBehavior
$sel:updateBehavior:SchemaChangePolicy' :: SchemaChangePolicy -> Maybe UpdateBehavior
$sel:deleteBehavior:SchemaChangePolicy' :: SchemaChangePolicy -> Maybe DeleteBehavior
..} =
    forall a. NFData a => a -> ()
Prelude.rnf Maybe DeleteBehavior
deleteBehavior
      seq :: forall a b. a -> b -> b
`Prelude.seq` forall a. NFData a => a -> ()
Prelude.rnf Maybe UpdateBehavior
updateBehavior

instance Data.ToJSON SchemaChangePolicy where
  toJSON :: SchemaChangePolicy -> Value
toJSON SchemaChangePolicy' {Maybe DeleteBehavior
Maybe UpdateBehavior
updateBehavior :: Maybe UpdateBehavior
deleteBehavior :: Maybe DeleteBehavior
$sel:updateBehavior:SchemaChangePolicy' :: SchemaChangePolicy -> Maybe UpdateBehavior
$sel:deleteBehavior:SchemaChangePolicy' :: SchemaChangePolicy -> Maybe DeleteBehavior
..} =
    [Pair] -> Value
Data.object
      ( forall a. [Maybe a] -> [a]
Prelude.catMaybes
          [ (Key
"DeleteBehavior" forall kv v. (KeyValue kv, ToJSON v) => Key -> v -> kv
Data..=)
              forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
Prelude.<$> Maybe DeleteBehavior
deleteBehavior,
            (Key
"UpdateBehavior" 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 UpdateBehavior
updateBehavior
          ]
      )