Try to order tables by class dimension

- Rows in tables are sorted by ascending dimension count
- Switch from lexicographical to natural ordering.
  -> Now parameter2 belongs above parameter10.

Re #2711

spinetoolbox/helpers.py

@@ -1825,3 +1825,15 @@ def add_action(self, text, slot, enabled=True, tooltip=None, icon=None):
         action.setEnabled(enabled)
         if tooltip is not None:
             action.setToolTip(tooltip)
+
+
+def order_key(name):
+    """Splits the given string into a list of its substrings and digits
+    example: "David_1946_Gilmour" -> ["David_", 1946, "_Gilmour"]
+    If given a string that starts with a digit, a 'big' string (in comparisons) will be added to the start
+    of the order key that makes sure that every key starts with a str and alternates with int after that.
+    """
+    key_list = [int(text) if text.isdigit() else text for text in re.split(r"(\d+)", name) if text]
+    if len(key_list) and isinstance(key_list[0], int):
+        key_list.insert(0, "\U0010FFFF")
+    return key_list

spinetoolbox/spine_db_editor/mvcmodels/single_models.py

@@ -12,7 +12,7 @@
 
 """Single models for parameter definitions and values (as 'for a single entity')."""
 from PySide6.QtCore import Qt
-from spinetoolbox.helpers import DB_ITEM_SEPARATOR, plain_to_rich
+from spinetoolbox.helpers import DB_ITEM_SEPARATOR, plain_to_rich, order_key
 from ...mvcmodels.minimal_table_model import MinimalTableModel
 from ..mvcmodels.single_and_empty_model_mixins import SplitValueAndTypeMixin, MakeEntityOnTheFlyMixin
 from ...mvcmodels.shared import PARSED_ROLE, DB_MAP_ROLE
@@ -62,7 +62,15 @@ def __init__(self, parent, db_map, entity_class_id, committed, lazy=False):
     def __lt__(self, other):
         if self.entity_class_name == other.entity_class_name:
             return self.db_map.codename < other.db_map.codename
-        return self.entity_class_name < other.entity_class_name
+        keys = {}
+        for side, model in {"left": self, "right": other}.items():
+            dim = len(model.dimension_id_list)
+            class_name = model.entity_class_name
+            keys[side] = (
+                dim,
+                class_name,
+            )
+        return keys["left"] < keys["right"]
 
     @property
     def item_type(self):
@@ -365,7 +373,7 @@ def item_type(self):
 
     def _sort_key(self, element):
         item = self.db_item_from_id(element)
-        return item.get("name", "")
+        return order_key(item.get("name", ""))
 
     def _do_update_items_in_db(self, db_map_data):
         self.db_mngr.update_parameter_definitions(db_map_data)
@@ -387,7 +395,10 @@ def item_type(self):
 
     def _sort_key(self, element):
         item = self.db_item_from_id(element)
-        return (item.get("entity_byname", ()), item.get("parameter_name", ""), item.get("alternative_name", ""))
+        byname = order_key("_".join(item.get("entity_byname", ())))
+        parameter_name = order_key(item.get("parameter_name", ""))
+        alt_name = order_key(item.get("alternative_name", ""))
+        return byname, parameter_name, alt_name
 
     def _do_update_items_in_db(self, db_map_data):
         self.db_mngr.update_parameter_values(db_map_data)
@@ -402,7 +413,9 @@ def item_type(self):
 
     def _sort_key(self, element):
         item = self.db_item_from_id(element)
-        return (item.get("entity_byname", ()), item.get("alternative_name", ""))
+        byname = order_key("_".join(item.get("entity_byname", ())))
+        alt_name = order_key(item.get("alternative_name", ""))
+        return byname, alt_name
 
     @property
     def _references(self):

tests/spine_db_editor/widgets/test_custom_qtableview.py

@@ -303,18 +303,51 @@ def setUp(self):
         self._temp_dir = TemporaryDirectory()
         url = "sqlite:///" + os.path.join(self._temp_dir.name, "test_database.sqlite")
         db_map = DatabaseMapping(url, create=True)
-        import_functions.import_object_classes(db_map, ("object_class",))
-        self._n_objects = 12
-        object_data = (("object_class", f"object_{n}") for n in range(self._n_objects))
-        import_functions.import_objects(db_map, object_data)
+        # 1-D entity class
+        self._n_entities = 12
         self._n_parameters = 12
+        import_functions.import_entity_classes(db_map, (("object_class",),))
+        object_data = [("object_class", f"object_{n}") for n in range(self._n_entities)]
+        import_functions.import_entities(db_map, object_data)
         parameter_definition_data = (("object_class", f"parameter_{n}") for n in range(self._n_parameters))
         import_functions.import_object_parameters(db_map, parameter_definition_data)
         parameter_value_data = (
             ("object_class", f"object_{object_n}", f"parameter_{parameter_n}", "a_value")
-            for object_n, parameter_n in itertools.product(range(self._n_objects), range(self._n_parameters))
+            for object_n, parameter_n in itertools.product(range(self._n_entities), range(self._n_parameters))
         )
         import_functions.import_object_parameter_values(db_map, parameter_value_data)
+        # 2-D entity class
+        self._n_ND_entities = 2
+        self._n_ND_parameters = 2
+        import_functions.import_entity_classes(
+            db_map,
+            (
+                (
+                    "multi_d_class",
+                    (
+                        "object_class",
+                        "object_class",
+                    ),
+                ),
+            ),
+        )
+        nd_entity_names = [
+            (f"object_{i}", f"object_{j}") for i, j in itertools.permutations(range(self._n_ND_entities), 2)
+        ]
+        object_data = [("multi_d_class", byname) for byname in nd_entity_names]
+        import_functions.import_entities(db_map, object_data)
+        parameter_definition_data = (("multi_d_class", f"parameter_{n}") for n in range(self._n_ND_parameters))
+        import_functions.import_object_parameters(db_map, parameter_definition_data)
+        parameter_value_data = [
+            (
+                "multi_d_class",
+                byname,
+                f"parameter_{parameter_n}",
+                "a_value",
+            )
+            for byname, parameter_n in itertools.product(nd_entity_names, range(self._n_ND_parameters))
+        ]
+        import_functions.import_parameter_values(db_map, parameter_value_data)
         db_map.commit_session("Add test data.")
         db_map.close()
         self._common_setup(url, create=False)
@@ -327,6 +360,9 @@ def tearDown(self):
         self._common_tear_down()
         self._temp_dir.cleanup()
 
+    def _whole_model_rowcount(self):
+        return self._n_entities * self._n_parameters + self._n_ND_entities * self._n_ND_parameters + 1
+
     def test_purging_value_data_removes_all_rows(self):
         table_view = self._db_editor.ui.tableView_parameter_value
         model = table_view.model()
@@ -355,9 +391,9 @@ def test_removing_fetched_rows_allows_still_fetching_more(self):
         table_view = self._db_editor.ui.tableView_parameter_value
         model = table_view.model()
         self.assertEqual(model.rowCount(), self._CHUNK_SIZE + 1)
-        n_values = self._n_parameters * self._n_objects
+        n_values = self._whole_model_rowcount() - 1
         self._db_mngr.remove_items({self._db_map: {"parameter_value": set(range(1, n_values, 2))}})
-        self.assertEqual(model.rowCount(), (self._CHUNK_SIZE) / 2 + 1)
+        self.assertEqual(model.rowCount(), self._CHUNK_SIZE / 2 + 1)
 
     def test_undoing_purge(self):
         table_view = self._db_editor.ui.tableView_parameter_value
@@ -366,19 +402,23 @@ def test_undoing_purge(self):
         self._db_mngr.purge_items({self._db_map: ["parameter_value"]})
         self.assertEqual(model.rowCount(), 1)
         self._db_editor.undo_action.trigger()
-        while model.rowCount() != self._n_objects * self._n_parameters + 1:
+        while model.rowCount() != self._whole_model_rowcount():
             # Fetch the entire model, because we want to validate all the data.
             model.fetchMore(QModelIndex())
             QApplication.processEvents()
-        expected = sorted(
+        expected = [
+            ["object_class", f"object_{object_n}", f"parameter_{parameter_n}", "Base", "a_value", self.db_codename]
+            for object_n, parameter_n in itertools.product(range(self._n_entities), range(self._n_parameters))
+        ]
+        nd_entity_names = [f"object_{i} ǀ object_{j}" for i, j in itertools.permutations(range(self._n_ND_entities), 2)]
+        expected.extend(
             [
-                ["object_class", f"object_{object_n}", f"parameter_{parameter_n}", "Base", "a_value", self.db_codename]
-                for object_n, parameter_n in itertools.product(range(self._n_objects), range(self._n_parameters))
-            ],
-            key=lambda x: (x[1], x[2]),
+                ["multi_d_class", entity_name, f"parameter_{parameter_n}", "Base", "a_value", self.db_codename]
+                for entity_name, parameter_n in itertools.product(nd_entity_names, range(self._n_ND_parameters))
+            ]
         )
         expected.append([None, None, None, None, None, self.db_codename])
-        self.assertEqual(model.rowCount(), self._n_objects * self._n_parameters + 1)
+        self.assertEqual(model.rowCount(), self._whole_model_rowcount())
         for row, column in itertools.product(range(model.rowCount()), range(model.columnCount())):
             self.assertEqual(model.index(row, column).data(), expected[row][column])
 
@@ -394,20 +434,80 @@ def test_rolling_back_purge(self):
             instance.exec.return_value = QMessageBox.StandardButton.Ok
             self._db_editor.ui.actionRollback.trigger()
             self._db_editor.rollback_session()
-        while model.rowCount() != self._n_objects * self._n_parameters + 1:
+        while model.rowCount() != self._whole_model_rowcount():
             # Fetch the entire model, because we want to validate all the data.
             model.fetchMore(QModelIndex())
             QApplication.processEvents()
-        expected = sorted(
+        expected = [
+            ["object_class", f"object_{object_n}", f"parameter_{parameter_n}", "Base", "a_value", self.db_codename]
+            for object_n, parameter_n in itertools.product(range(self._n_entities), range(self._n_parameters))
+        ]
+        nd_entity_names = [f"object_{i} ǀ object_{j}" for i, j in itertools.permutations(range(self._n_ND_entities), 2)]
+        expected.extend(
             [
-                ["object_class", f"object_{object_n}", f"parameter_{parameter_n}", "Base", "a_value", self.db_codename]
-                for object_n, parameter_n in itertools.product(range(self._n_objects), range(self._n_parameters))
-            ],
-            key=lambda x: (x[1], x[2]),
+                ["multi_d_class", entity_name, f"parameter_{parameter_n}", "Base", "a_value", self.db_codename]
+                for entity_name, parameter_n in itertools.product(nd_entity_names, range(self._n_ND_parameters))
+            ]
         )
         QApplication.processEvents()
         expected.append([None, None, None, None, None, self.db_codename])
-        self.assertEqual(model.rowCount(), self._n_objects * self._n_parameters + 1)
+        self.assertEqual(model.rowCount(), self._whole_model_rowcount())
+        for row, column in itertools.product(range(model.rowCount()), range(model.columnCount())):
+            self.assertEqual(model.index(row, column).data(), expected[row][column])
+
+    def test_sorting(self):
+        """Test that the parameter value table sorts in an expected order."""
+        url = "sqlite:///" + os.path.join(self._temp_dir.name, "test_database.sqlite")
+        db_map = DatabaseMapping(url)
+        parameter_definition_data = (
+            ("object_class", f"0parameter_"),
+            ("object_class", f"1parameter_"),
+        )
+        import_functions.import_object_parameters(db_map, parameter_definition_data)
+        parameter_value_data = (
+            ("object_class", f"object_0", f"0parameter_", "a_value"),
+            ("object_class", f"object_0", f"1parameter_", "a_value"),
+            ("object_class", f"object_1", f"0parameter_", "a_value"),
+            ("object_class", f"object_1", f"1parameter_", "a_value"),
+        )
+        import_functions.import_object_parameter_values(db_map, parameter_value_data)
+        db_map.commit_session("Add test data.")
+        db_map.close()
+        table_view = self._db_editor.ui.tableView_parameter_value
+        model = table_view.model()
+        self.assertEqual(model.rowCount(), self._CHUNK_SIZE + 1)
+        while model.rowCount() != self._whole_model_rowcount() + 4:
+            model.fetchMore(QModelIndex())
+            QApplication.processEvents()
+        expected = []
+        for object_n in range(self._n_entities):
+            for parameter_n in range(self._n_parameters):
+                expected.append(
+                    [
+                        "object_class",
+                        f"object_{object_n}",
+                        f"parameter_{parameter_n}",
+                        "Base",
+                        "a_value",
+                        self.db_codename,
+                    ]
+                )
+            if object_n < 2:
+                expected.extend(
+                    [
+                        ["object_class", f"object_{object_n}", f"0parameter_", "Base", "a_value", self.db_codename],
+                        ["object_class", f"object_{object_n}", f"1parameter_", "Base", "a_value", self.db_codename],
+                    ]
+                )
+        nd_entity_names = [f"object_{i} ǀ object_{j}" for i, j in itertools.permutations(range(self._n_ND_entities), 2)]
+        expected.extend(
+            [
+                ["multi_d_class", entity_name, f"parameter_{parameter_n}", "Base", "a_value", self.db_codename]
+                for entity_name, parameter_n in itertools.product(nd_entity_names, range(self._n_ND_parameters))
+            ]
+        )
+        expected.append([None, None, None, None, None, self.db_codename])
+        self.assertEqual(model.rowCount(), self._whole_model_rowcount() + 4)
         for row, column in itertools.product(range(model.rowCount()), range(model.columnCount())):
             self.assertEqual(model.index(row, column).data(), expected[row][column])
 

tests/test_helpers.py

@@ -52,6 +52,7 @@
     merge_dicts,
     HTMLTagFilter,
     home_dir,
+    order_key,
 )
 
 
@@ -419,6 +420,11 @@ def test_merge_dicts_when_source_overwrites_data_in_target(self):
         merge_dicts({"a": {"b": 2}}, target)
         self.assertEqual(target, {"a": {"b": 2}})
 
+    def test_order_key(self):
+        self.assertEqual(["Humphrey_Bogart"], order_key("Humphrey_Bogart"))
+        self.assertEqual(["Wes_", 1969, "_Anderson"], order_key("Wes_1969_Anderson"))
+        self.assertEqual(["", 1899, "_Alfred-", 1980, "Hitchcock"], order_key("1899_Alfred-1980Hitchcock"))
+
 
 class TestHTMLTagFilter(unittest.TestCase):
     def test_simple_log_line(self):