Set preferred language in generator; get available languages in gpkg …

…connector

modelbaker/dbconnector/db_connector.py

@@ -401,7 +401,7 @@ def set_preferred_translation(self, lang: str) -> bool:
         """
         Returns whether the preferred translation language was successfully set
         """
-        if len(lang) == 2:
+        if len(lang) == 2 and lang != "__":
             self._lang = lang
             return True
 
@@ -417,6 +417,12 @@ def get_translation_handling(self) -> tuple[bool, str]:
         """
         return False, ""
 
+    def get_available_languages(self) -> list[str]:
+        """
+        Returns a list of available languages in the t_ili2db_nls table.
+        """
+        return []
+
 
 class DBConnectorError(Exception):
     """This error is raised when DbConnector could not connect to database.

modelbaker/dbconnector/gpkg_connector.py

@@ -106,10 +106,7 @@ def _get_tables_info(self):
         interlis_joins = ""
         tr_enabled, lang = self.get_translation_handling()
         if tr_enabled:
-            self.new_message.emit(
-                Qgis.Info,
-                f"Getting tables info with preferred language {lang}.",
-            )
+            self.stdout.emit(f"Getting tables info with preferred language {lang}.")
 
         if self.metadata_exists():
             interlis_fields = """p.setting AS kind_settings,
@@ -1213,3 +1210,20 @@ def set_ili2db_sequence_value(self, value):
 
     def get_translation_handling(self) -> tuple[bool, str]:
         return self._table_exists(GPKG_NLS_TABLE) and self._lang != "", self._lang
+
+    def get_available_languages(self):
+        if not self._table_exists(GPKG_NLS_TABLE):
+            return []
+
+        cursor = self.conn.cursor()
+        cursor.execute(
+            """SELECT DISTINCT
+            lang
+            FROM "{}";
+            """.format(
+                GPKG_NLS_TABLE
+            )
+        )
+        records = cursor.fetchall()
+        cursor.close()
+        return [record["lang"] for record in records]

modelbaker/generator/generator.py

@@ -53,6 +53,7 @@ def __init__(
         mgmt_uri: Optional[str] = None,
         consider_basket_handling: bool = False,
         optimize_strategy: OptimizeStrategy = OptimizeStrategy.NONE,
+        preferred_language: str = "",
     ) -> None:
         """
         Creates a new Generator objects.
@@ -76,6 +77,8 @@ def __init__(
         self.basket_handling = consider_basket_handling and self.get_basket_handling()
         self.optimize_strategy = optimize_strategy
 
+        self._db_connector.set_preferred_translation(preferred_language)
+
         self._additional_ignored_layers = (
             []
         )  # List of layers to ignore set by 3rd parties