#1586

opteryx/connectors/__init__.py

@@ -106,7 +106,6 @@ def connector_factory(dataset, statistics, **config):
             from opteryx.connectors import file_connector
 
             return file_connector.FileConnector(dataset=dataset, statistics=statistics)
-
         # fall back to the default connector (local disk if not set)
         connector = _storage_prefixes.get("_default", DiskConnector)
 

opteryx/planner/logical_planner/logical_planner.py

@@ -64,6 +64,8 @@
 from opteryx.managers.expression import get_all_nodes_of_type
 from opteryx.models import Node
 from opteryx.planner.logical_planner import logical_planner_builders
+from opteryx.planner.views import is_view
+from opteryx.planner.views import view_as_plan
 from opteryx.third_party.travers import Graph
 
 
@@ -663,6 +665,28 @@ def create_node_relation(relation):
                 root_node = step_id
         else:  # pragma: no cover
             raise NotImplementedError(relation["relation"]["Derived"])
+    elif is_view(relation["relation"]["Table"]["name"][0]["value"]):
+        # We're a view, we need to add it to the plan as a subquery
+        view_name = relation["relation"]["Table"]["name"][0]["value"]
+        sub_plan = view_as_plan(view_name=view_name)
+        plan_head = sub_plan.get_exit_points()[0]
+
+        # Replace the exit node with a subquery node
+        # We call the subquery the name of the view if we don't have an alias
+        # and we use the colums from the exit node
+        subquery_node = LogicalPlanNode(node_type=LogicalPlanStepType.Subquery)
+        subquery_node.alias = (
+            view_name
+            if relation["relation"]["Table"]["alias"] is None
+            else relation["relation"]["Table"]["alias"]["name"]["value"]
+        )
+        subquery_node.columns = sub_plan[plan_head].columns
+        sub_plan[plan_head] = subquery_node
+        root_node = plan_head
+
+        # DEBUG: log (f"VIEW PLAN")
+        # DEBUG: log (sub_plan)
+
     elif relation["relation"]["Table"]["args"]:
         function = relation["relation"]["Table"]
         function_name = function["name"][0]["value"].upper()

opteryx/planner/views/__init__.py

@@ -0,0 +1,47 @@
+# Licensed 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.
+
+import orjson
+
+from opteryx.managers.expression import NodeType
+from opteryx.third_party.travers import Graph
+
+
+def _load_views():
+    try:
+        with open("views.json", "rb") as defs:
+            return orjson.loads(defs.read())
+    except Exception as err:
+        print(f"[OPTERYX] Unable to open views definition file. {err}")
+        return {}
+
+
+VIEWS = _load_views()
+
+
+def is_view(view_name: str) -> bool:
+    return view_name in VIEWS
+
+
+def view_as_plan(view_name: str) -> Graph:
+    from opteryx.planner.logical_planner import do_logical_planning_phase
+    from opteryx.third_party import sqloxide
+    from opteryx.utils.sql import clean_statement
+    from opteryx.utils.sql import remove_comments
+
+    operation = VIEWS.get(view_name)["statement"]
+
+    clean_sql = clean_statement(remove_comments(operation))
+    parsed_statements = sqloxide.parse_sql(clean_sql, dialect="mysql")
+    logical_plan, _, _ = next(do_logical_planning_phase(parsed_statements))
+
+    return logical_plan

tests/sql_battery/test_shapes_and_errors_battery.py

@@ -1346,6 +1346,7 @@
         ("SELECT * FROM $astronauts WHERE LIST_CONTAINS_ANY(missions, @@user_memberships)", 3, 19, None),
         ("SELECT $missions.* FROM $missions INNER JOIN $user ON Mission = value WHERE attribute = 'membership'", 1, 8, None),
 
+        # TEST FUNCTIONS
         ("EXECUTE PLANETS_BY_ID (id=1)", 1, 20, None),  # simple case
         ("EXECUTE PLANETS_BY_ID (1)", None, None, ParameterError),  # simple case)
         ("EXECUTE PLANETS_BY_ID (name=1)", None, None, ParameterError),  # simple case)
@@ -1355,6 +1356,20 @@
         ("EXECUTE GET_SATELLITES_BY_PLANET_NAME(name='Jupiter')", 67, 1, SqlError),  # string param
         ("EXECUTE multiply_two_numbers (one=1.0, two=9.9)", 1, 1, None),  # multiple params
 
+        # TEST VIEWS
+        ("SELECT * FROM mission_reports", 177, 1, None),
+        ("SELECT * FROM mission_reports AS MR", 177, 1, None),
+        ("SELECT MR.* FROM mission_reports AS MR", 177, 1, None),
+        ("SELECT satellite_name FROM mission_reports", 177, 1, None),
+        ("SELECT MR.satellite_name FROM mission_reports AS MR", 177, 1, None),
+        ("SELECT satellite_name FROM mission_reports AS MR WHERE satellite_name ILIKE '%a%'", 90, 1, None),
+        ("SELECT satellite_name FROM mission_reports AS MR WHERE satellite_name ILIKE '%a%'", 90, 1, None),
+        ("SELECT * FROM mission_reports INNER JOIN $satellites ON satellite_name = name", 177, 9, None),
+        ("SELECT * FROM my_mission_reports", 3, 19, None),
+        ("SELECT * FROM my_mission_reports WHERE year = 1963", 2, 19, None),
+        ("SELECT * FROM my_mission_reports ORDER BY name", 3, 19, None),
+        ("SELECT name, status FROM my_mission_reports", 3, 2, None),
+
         # These are queries which have been found to return the wrong result or not run correctly
         # FILTERING ON FUNCTIONS
         ("SELECT DATE(birth_date) FROM $astronauts FOR TODAY WHERE DATE(birth_date) < '1930-01-01'", 14, 1, None),

views.json

@@ -0,0 +1,8 @@
+{
+    "mission_reports": {
+        "statement": "/* A test case for VIEW functionality */ SELECT s.name AS satellite_name FROM $satellites AS s INNER JOIN $planets AS p ON p.id = s.planetId"
+    },
+    "my_mission_reports": {
+        "statement": "/* A test case for row-permissions functionality */ SELECT * FROM $astronauts WHERE LIST_CONTAINS_ANY(missions, @@user_memberships)"
+    }
+}