Allow activities with empty output

bootstrap/core_algorithm.alc

@@ -1044,6 +1044,7 @@ String function cmd_transformation_between(source_name : String, target_name : S
 	Element result
 	String transformation
 
+	log("Finding transformation from " + source_name + " to " + target_name)
 	source_id = get_entry_id(source_name)
 	if (source_id != ""):
 		target_id = get_entry_id(target_name)
@@ -1060,6 +1061,7 @@ String function cmd_transformation_between(source_name : String, target_name : S
 				transformation = set_pop(result)
 				if (allow_read(current_user_id, transformation)):
 					r = r + string_join(full_name(transformation), "\n")
+					log("Found: " + full_name(transformation))
 			return r!
 		else:
 			return "Model not found: " + target_name!
@@ -1255,26 +1257,24 @@ String function cmd_transformation_execute(transformation_name : String, source_
 					assoc_name = read_attribute(core, target, "name")
 					if (dict_in(target_models, assoc_name)):
 						target_model_name = target_models[assoc_name]
-					else:
-						return "Target model not bound: " + assoc_name!
 
-					if (get_entry_id(target_model_name) == ""):
-						// Doesn't exist yet, so we can easily create
-						if (get_entry_id(get_foldername(target_model_name)) == ""):
-							return "Folder not found: " + get_foldername(target_model_name)!
+						if (get_entry_id(target_model_name) == ""):
+							// Doesn't exist yet, so we can easily create
+							if (get_entry_id(get_foldername(target_model_name)) == ""):
+								return "Folder not found: " + get_foldername(target_model_name)!
+							else:
+								if (allow_write(current_user_id, get_entry_id(get_foldername(target_model_name)))):
+									dict_add(output_map, assoc_name, full_name(readAssociationDestination(core, target)))
+									dict_add(outputs, assoc_name, target_model_name)
+								else:
+									return "Permission denied to folder: " + get_foldername(target_model_name)!
 						else:
-							if (allow_write(current_user_id, get_entry_id(get_foldername(target_model_name)))):
-								dict_add(output_map, assoc_name, full_name(readAssociationDestination(core, target)))
+							// Already exists, so we need to check for write access
+							if (allow_write(current_user_id, get_entry_id(target_model_name))):
+								dict_add(output_map, assoc_name, read_attribute(core, readAssociationDestination(core, target), "name"))
 								dict_add(outputs, assoc_name, target_model_name)
 							else:
-								return "Permission denied to folder: " + get_foldername(target_model_name)!
-					else:
-						// Already exists, so we need to check for write access
-						if (allow_write(current_user_id, get_entry_id(target_model_name))):
-							dict_add(output_map, assoc_name, read_attribute(core, readAssociationDestination(core, target), "name"))
-							dict_add(outputs, assoc_name, target_model_name)
-						else:
-							return "Permission denied to model: " + target_model_name!
+								return "Permission denied to model: " + target_model_name!
 
 				if (read_type(core, transformation_id) == "ActionLanguage"):
 					output("Success: ready for AL execution")
@@ -2053,12 +2053,12 @@ String function cmd_transformation_signature(transformation_name : String):
 				inputs = allOutgoingAssociationInstances(core, model_id, "transformInput")
 				while (set_len(inputs) > 0):
 					elem = set_pop(inputs)
-					result = string_join(string_join(string_join(string_join("I ", read_attribute(core, elem, "name")), " "), full_name(readAssociationDestination(core, elem))), "\n")
+					result = string_join(string_join(string_join(string_join(result + "I ", read_attribute(core, elem, "name")), " "), full_name(readAssociationDestination(core, elem))), "\n")
 
 				outputs = allOutgoingAssociationInstances(core, model_id, "transformOutput")
 				while (set_len(outputs) > 0):
 					elem = set_pop(outputs)
-					result = string_join(string_join(string_join(string_join("O ", read_attribute(core, elem, "name")), " "), full_name(readAssociationDestination(core, elem))), "\n")
+					result = string_join(string_join(string_join(string_join(result + "O ", read_attribute(core, elem, "name")), " "), full_name(readAssociationDestination(core, elem))), "\n")
 
 				return result!
 			else: