X-Git-Url: https://plomlompom.com/repos/%7B%7B%20web_path%20%7D%7D/decks/%7B%7Bdeck_id%7D%7D/cards/%7B%7Bcard_id%7D%7D/static/gitweb.js?a=blobdiff_plain;f=plomtask%2Fdb.py;h=fe67e5cc799303efada094f510b537616a30bbd0;hb=4815fe5c7be508e67ceec144968a81bdd6a923d4;hp=2d9ae2714ca9a2e625036ea44f295880db986f16;hpb=7eb81e526c45118a295dbfc12be01f92dc809974;p=plomtask

diff --git a/plomtask/db.py b/plomtask/db.py
index 2d9ae27..fe67e5c 100644
--- a/plomtask/db.py
+++ b/plomtask/db.py
@@ -121,7 +121,46 @@ class BaseModel(Generic[BaseModelId]):
     table_name = ''
     to_save: list[str] = []
     id_: None | BaseModelId
-    cache_: dict[BaseModelId, Self] = {}
+    cache_: dict[BaseModelId, Self]
+
+    @classmethod
+    def get_cached(cls: type[BaseModelInstance],
+                   id_: BaseModelId) -> BaseModelInstance | None:
+        """Get object of id_ from class's cache, or None if not found."""
+        # pylint: disable=consider-iterating-dictionary
+        cache = cls.get_cache()
+        if id_ in cache.keys():
+            obj = cache[id_]
+            assert isinstance(obj, cls)
+            return obj
+        return None
+
+    @classmethod
+    def empty_cache(cls) -> None:
+        """Empty class's cache."""
+        cls.cache_ = {}
+
+    @classmethod
+    def get_cache(cls: type[BaseModelInstance]) -> dict[Any, BaseModel[Any]]:
+        """Get cache dictionary, create it if not yet existing."""
+        if not hasattr(cls, 'cache_'):
+            d: dict[Any, BaseModel[Any]] = {}
+            cls.cache_ = d
+        return cls.cache_
+
+    def cache(self) -> None:
+        """Update object in class's cache."""
+        if self.id_ is None:
+            raise HandledException('Cannot cache object without ID.')
+        cache = self.__class__.get_cache()
+        cache[self.id_] = self
+
+    def uncache(self) -> None:
+        """Remove self from cache."""
+        if self.id_ is None:
+            raise HandledException('Cannot un-cache object without ID.')
+        cache = self.__class__.get_cache()
+        del cache[self.id_]
 
     @classmethod
     def from_table_row(cls: type[BaseModelInstance],
@@ -149,6 +188,22 @@ class BaseModel(Generic[BaseModelId]):
                 break
         return obj, from_cache
 
+    @classmethod
+    def all(cls: type[BaseModelInstance],
+            db_conn: DatabaseConnection) -> list[BaseModelInstance]:
+        """Collect all objects of class."""
+        items: dict[BaseModelId, BaseModelInstance] = {}
+        for k, v in cls.get_cache().items():
+            assert isinstance(v, cls)
+            items[k] = v
+        already_recorded = items.keys()
+        for id_ in db_conn.column_all(cls.table_name, 'id'):
+            if id_ not in already_recorded:
+                # pylint: disable=no-member
+                item = cls.by_id(db_conn, id_)  # type: ignore[attr-defined]
+                items[item.id_] = item
+        return list(items.values())
+
     def set_int_id(self, id_: int | None) -> None:
         """Set id_ if >= 1 or None, else fail."""
         if (id_ is not None) and id_ < 1:
@@ -168,47 +223,3 @@ class BaseModel(Generic[BaseModelId]):
         if update_with_lastrowid:
             self.id_ = cursor.lastrowid  # type: ignore[assignment]
         self.cache()
-
-    @classmethod
-    def get_cached(cls: type[BaseModelInstance],
-                   id_: BaseModelId) -> BaseModelInstance | None:
-        """Get object of id_ from class's cache, or None if not found."""
-        # pylint: disable=consider-iterating-dictionary
-        if id_ in cls.cache_.keys():
-            obj = cls.cache_[id_]
-            assert isinstance(obj, cls)
-            return obj
-        return None
-
-    def cache(self) -> None:
-        """Update object in class's cache."""
-        if self.id_ is None:
-            raise HandledException('Cannot cache object without ID.')
-        self.__class__.cache_[self.id_] = self
-
-    def uncache(self) -> None:
-        """Remove self from cache."""
-        if self.id_ is None:
-            raise HandledException('Cannot un-cache object without ID.')
-        del self.__class__.cache_[self.id_]
-
-    @classmethod
-    def empty_cache(cls) -> None:
-        """Empty class's cache."""
-        cls.cache_ = {}
-
-    @classmethod
-    def all(cls: type[BaseModelInstance],
-            db_conn: DatabaseConnection) -> list[BaseModelInstance]:
-        """Collect all objects of class."""
-        items: dict[BaseModelId, BaseModelInstance] = {}
-        for k, v in cls.cache_.items():
-            assert isinstance(v, cls)
-            items[k] = v
-        already_recorded = items.keys()
-        for id_ in db_conn.column_all(cls.table_name, 'id'):
-            if id_ not in already_recorded:
-                # pylint: disable=no-member
-                item = cls.by_id(db_conn, id_)  # type: ignore[attr-defined]
-                items[item.id_] = item
-        return list(items.values())