[datasets] new, API using command pattern (#9129)

* [datasets] new, API using command pattern

* [datasets] tests and improvements

* [datasets] lint

* [database] address comments

* [datasets] lint

* [datasets] Address PR comments

* [dataset] Fix, dataset expects a Dict now

* [dataset] lint and optional commits

* [dataset] mypy

* [dataset] Fix, license and parent class

* [dataset] Make CRUD DAO raise exceptions

superset/commands/exceptions.py

@@ -0,0 +1,71 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+from typing import List, Optional
+
+from marshmallow import ValidationError
+
+
+class CommandException(Exception):
+    """ Common base class for Command exceptions. """
+
+    message = ""
+
+    def __init__(self, message: str = "", exception: Optional[Exception] = None):
+        if message:
+            self.message = message
+        self._exception = exception
+        super().__init__(self.message)
+
+    @property
+    def exception(self):
+        return self._exception
+
+
+class CommandInvalidError(CommandException):
+    """ Common base class for Command Invalid errors. """
+
+    def __init__(self, message=""):
+        self._invalid_exceptions = list()
+        super().__init__(self.message)
+
+    def add(self, exception: ValidationError):
+        self._invalid_exceptions.append(exception)
+
+    def add_list(self, exceptions: List[ValidationError]):
+        self._invalid_exceptions.extend(exceptions)
+
+    def normalized_messages(self):
+        errors = {}
+        for exception in self._invalid_exceptions:
+            errors.update(exception.normalized_messages())
+        return errors
+
+
+class UpdateFailedError(CommandException):
+    message = "Command update failed"
+
+
+class CreateFailedError(CommandException):
+    message = "Command create failed"
+
+
+class DeleteFailedError(CommandException):
+    message = "Command delete failed"
+
+
+class ForbiddenError(CommandException):
+    message = "Action is forbidden"