From e3550f954ab6a2b6190784e6b917dc2053b82649 Mon Sep 17 00:00:00 2001
From: dormi330 <dormi330@gmail.com>
Date: Fri, 10 Mar 2023 18:11:21 +0800
Subject: [PATCH] style, (T1, T2) ==> Tuple[T1, T2]

---
 dbt/adapters/flink/connections.py     |  4 ++--
 dbt/adapters/flink/impl.py            |  2 +-
 flink/sqlgateway/schema_operations.py | 21 ++++++++-------------
 3 files changed, 11 insertions(+), 16 deletions(-)

diff --git a/dbt/adapters/flink/connections.py b/dbt/adapters/flink/connections.py
index f5d5fb2..ea92048 100644
--- a/dbt/adapters/flink/connections.py
+++ b/dbt/adapters/flink/connections.py
@@ -117,7 +117,7 @@ def _read_session_handle(cls, credentials: FlinkCredentials) -> Optional[SqlGate
                 )
 
                 if (
-                    datetime.now() - session_timestamp
+                        datetime.now() - session_timestamp
                 ).seconds > credentials.session_idle_timeout_s:
                     logger.info("Stored session has timeout.")
                     return None
@@ -182,7 +182,7 @@ def show_catalogs(self) -> List[str]:
     def show_databases(self, catalog: str) -> List[str]:
         return SchemaOperation.show_databases(self.current_session(), catalog)
 
-    def show_relations(self, catalog: str, database: str) -> (List[str], List[str]):
+    def show_relations(self, catalog: str, database: str) -> Tuple[List[str], List[str]]:
         tables, views = SchemaOperation.show_relations(self.current_session(), catalog, database)
         return tables, views
 
diff --git a/dbt/adapters/flink/impl.py b/dbt/adapters/flink/impl.py
index 2cdec53..413f980 100644
--- a/dbt/adapters/flink/impl.py
+++ b/dbt/adapters/flink/impl.py
@@ -76,7 +76,7 @@ def get_columns_in_relation(self, relation: BaseRelation) -> List[BaseColumn]:
     def is_cancelable(cls) -> bool:
         return False  # TODO
 
-    def list_relations_without_caching(self, schema_relation: BaseRelation) -> List[BaseRelation]:
+    def list_relations_without_caching(self, schema_relation: BaseRelation) -> List[FlinkRelation]:
         database = schema_relation.path.database
         if not database:
             raise RuntimeError("database(flink catalog) should not be empty")
diff --git a/flink/sqlgateway/schema_operations.py b/flink/sqlgateway/schema_operations.py
index cea6f9b..45fcab1 100644
--- a/flink/sqlgateway/schema_operations.py
+++ b/flink/sqlgateway/schema_operations.py
@@ -1,5 +1,5 @@
 import time
-from typing import List
+from typing import List, Tuple
 
 from flink.sqlgateway.operation import SqlGatewayOperation
 from flink.sqlgateway.result_parser import SqlGatewayResult
@@ -15,6 +15,7 @@
 sql_show_databases = "show databases"
 sql_show_current_database = "show current database"
 sql_show_tables = "show tables"
+sql_show_views = "show views"
 
 pull_interval_s = 0.1
 
@@ -107,12 +108,10 @@ def show_databases(session: SqlGatewaySession, catalog: str) -> List[str]:
         return dbs
 
     @staticmethod
-    def show_relations(session, catalog: str, database: str) -> (List[str], List[str]):
-        """
-        note: for hive catalog, show tables also returns views
-        views = show views in catalog.database
-        tables = show tables in catalog.database - views
-        """
+    def show_relations(session, catalog: str, database: str) -> Tuple[List[str], List[str]]:
+        # note: for hive catalog, show tables also returns views
+        # views = show views in catalog.database
+        # tables = show tables in catalog.database - views
         views = SchemaOperation.show_views(session, catalog, database)
 
         if catalog is None:
@@ -136,12 +135,8 @@ def show_tables(session: SqlGatewaySession, catalog: str = None, database: str =
 
     @staticmethod
     def show_views(session: SqlGatewaySession, catalog: str = None, database: str = None) -> List[str]:
-        """
-        NO such sql
-        show views in|from catalog.database
-        """
-        sql = "show views"
-        return SchemaOperation.show_xxx(session, sql)
+        # NO such sql: show views in|from catalog.database
+        return SchemaOperation.show_xxx(session, sql_show_views)
 
     @staticmethod
     def show_xxx(session: SqlGatewaySession, sql: str) -> List[str]: