ref: replaced NodeFunctions with repeated NodeFunction

Author: raphael-goetz

build/rust/src/lib.rs

@@ -19,7 +19,7 @@ pub mod shared {
                 r#type: "no".to_string(),
                 settings: vec![],
                 starting_node_id: 0,
-                node_functions: None,
+                node_functions: vec![],
             };
 
             let str_flow = serde_json::to_string(&flow).expect("Serialization failed");
@@ -35,7 +35,7 @@ pub mod shared {
                 "data_types": [],
                 "settings": [],
                 "starting_node_id": 0,
-                "node_functions": null
+                "node_functions": []
             });
 
             assert_eq!(json_flow, expected_json);
@@ -52,7 +52,7 @@ pub mod shared {
                 "data_types": [],
                 "settings": [],
                 "starting_node_id": 0,
-                "node_functions": null
+                "node_functions": []
             }"#;
 
             let deserialized: Result<ValidationFlow, _> = serde_json::from_str(json_data);
@@ -67,7 +67,7 @@ pub mod shared {
                 input_type_identifier: None,
                 return_type_identifier: None,
                 starting_node_id: 0,
-                node_functions: None,
+                node_functions: vec![],
             };
 
             assert_eq!(deserialized.unwrap(), expected_flow);

proto/shared/shared.flow.proto

@@ -20,14 +20,14 @@ message ValidationFlow {
   optional string return_type_identifier = 6;
   repeated FlowSetting settings = 7;
   int64 starting_node_id = 8;
-  NodeFunctions node_functions = 9;
+  repeated NodeFunction node_functions = 9;
 }
 
 message ExecutionFlow {
   // Database ID -> req. for Aquila to identify in FlowStore
   int64 flow_id = 1;
   int64 starting_node_id = 2;
-  NodeFunctions node_functions = 4;
+  repeated NodeFunction node_functions = 4;
   optional shared.Value input_value = 3;
 }
 
@@ -46,10 +46,6 @@ message NodeFunction {
   optional int64 next_node_id = 4;
 }
 
-message NodeFunctions {
-  repeated NodeFunction functions = 1;
-}
-
 message NodeValue {
   oneof value {
     shared.Value literal_value = 1;