dpgaspar commented on a change in pull request #9129: [datasets] new, API using 
command pattern
URL: 
https://github.com/apache/incubator-superset/pull/9129#discussion_r379414952
 
 

 ##########
 File path: superset/datasets/commands/delete.py
 ##########
 @@ -0,0 +1,57 @@
+# 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 Optional, List
+
+from flask_appbuilder.security.sqla.models import User
+
+from superset.commands.base import BaseCommand, CommandValidateReturn
+from superset.datasets.commands.exceptions import (
+    DatasetDeleteFailedError,
+    DatasetForbiddenError,
+    DatasetNotFoundError,
+)
+from superset.connectors.sqla.models import SqlaTable
+from superset.datasets.dao import DatasetDAO
+from superset.exceptions import SupersetSecurityException
+from superset.views.base import check_ownership
+
+
+class DeleteDatasetCommand(BaseCommand):
+    def __init__(self, user: User, model_id: int):
+        self._actor = user
+        self._model_id = model_id
+        self._model: Optional[SqlaTable] = None
+
+    def run(self):
+        self.validate()
+        dataset = DatasetDAO.delete(self._model)
+
+        if not dataset:
+            raise DatasetDeleteFailedError()
+        return dataset
+
+    def validate(self) -> CommandValidateReturn:
+        # Validate/populate model exists
 
 Review comment:
   Added `model` get, since `validate` should run independently of `run`

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