Add control api and test

api/s13_controls.py

@@ -0,0 +1,26 @@
+from .operation import *
+
+
+def get_control_schema(name: str) -> dict[str, dict[str, Any]]:
+    return { 'control' : {'type': 'str' , 'optional': False , 'readonly': False} }
+
+
+def get_control(name: str) -> dict[str, Any]:
+    e = read(name, f"select * from controls")
+    return { 'control': e['control'] }
+
+
+def set_control_cache(name: str, cs: ChangeSet) -> SqlChangeSet:
+    old = get_control(name)
+
+    redo_sql = f"update controls set control = '{cs.operations[0]['control']}' where control = '{old['control']}';"
+    undo_sql = f"update controls set control = '{old['control']}' where control = '{cs.operations[0]['control']}';"
+
+    redo_cs = g_update_prefix | { 'type': 'control', 'control': cs.operations[0]['control'] }
+    undo_cs = g_update_prefix | { 'type': 'control', 'control': old['control'] }
+
+    return SqlChangeSet(redo_sql, undo_sql, redo_cs, undo_cs)
+
+
+def set_control(name: str, cs: ChangeSet) -> ChangeSet:
+    return execute_command(name, set_control_cache(name, cs))