Revize d79d1369

Re #8471 - Initialization of DAO implementation
- created data class according to DB tables (Certificate, PrivateKey)
- created abstract class for DB communication

src/dao/repository.py

@@ +1 @@
+class IRepository:
+    def create(self, sql: str, *args) -> bool:
+        pass
+
+    def read(self, sql: str, item_id: int = None):
+        pass
+
+    def update(self, sql: str, item_id: int, *args) -> bool:
+        pass
+
+    def delete(self, sql: str, item_id: int) -> bool:
+        pass

src/db_objects/certificate.py

@@ +1 @@
+class Certificate:
+    def __init__(self,
+                 certificate_id: int,
+                 common_name: str,
+                 valid_from: str,
+                 valid_to: str,
+                 pem_data: str,
+                 type_id: int,
+                 private_key_id: int,
+                 usage_id: int):
+        self.certificate_id: int = certificate_id
+        self.common_name: str = common_name
+        self.valid_from: str = valid_from
+        self.valid_to: str = valid_to
+        self.pem_data: str = pem_data
+        self.type_id: int = type_id
+        self.private_key_id: int = private_key_id
+        self.usage_id: int = usage_id

src/db_objects/private_key.py

@@ +1 @@
+class PrivateKey:
+    def __init__(self,
+                 private_key: str,
+                 password: str):
+        self.private_key = private_key
+        self.password = password