Change getters to properties

Per jmao

Co-authored-by: Jianfeng Mao <4297243+jmao-denver@users.noreply.github.com>

py/server/deephaven/table_factory.py

@@ -272,18 +272,16 @@ def delete(self, table: Table) -> None:
         except Exception as e:
             raise DHError(e, "delete data in the InputTable failed.") from e
 
+    @property
     def get_key_names(self) -> List[str]:
-        """Gets the names of the key columns.
-
-        Returns:
-            a list with the names of the key columns of this input table
+        """The names of the key columns of the InputTable.
         """
         return j_list_to_list(self.j_input_table.getKeyNames())
 
-    def get_value_names(self) -> List[str]:
-        """Gets the names of the value columns. By default, any column not marked as a key column is a value column.
+    @property
+    def value_names(self) -> List[str]:
+        """The names of the value columns. By default, any column not marked as a key column is a value column.
 
-        Returns: a list with the names of the value columns of this input table
         """
         return j_list_to_list(self.j_input_table.getValueNames())
 

py/server/tests/test_table_factory.py

@@ -327,8 +327,8 @@ def test_input_table(self):
         col_defs = {c.name: c.data_type for c in t.columns}
         with self.subTest("from table definition"):
             append_only_input_table = input_table(col_defs=col_defs)
-            self.assertEqual(append_only_input_table.get_key_names(), [])
-            self.assertEqual(append_only_input_table.get_value_names(), [col.name for col in cols])
+            self.assertEqual(append_only_input_table.key_names, [])
+            self.assertEqual(append_only_input_table.value_names, [col.name for col in cols])
             append_only_input_table.add(t)
             self.assertEqual(append_only_input_table.size, 2)
             append_only_input_table.add(t)