Feature/minor improvments for python cli (#29)

* mps-cli-py: get_property uses the get function to return None if the property is not found instead of throwing an exception

* mps-cli-py: performance optimazation: use dict for get_model_by_uuid and get_node_by_uuid to speed up the functions if there are called multiple times for big repos

* Update SRepository.py by changing "model_2_uuid" to "uuid_2_model"

---------

Co-authored-by: Michael Langhammer <[email protected]>
Co-authored-by: danielratiu <[email protected]>

mps-cli-py/src/mpscli/model/SModel.py

@@ -8,6 +8,7 @@ def __init__(self, name, uuid, is_do_not_generate):
         self.root_nodes = []
         self.path_to_model_file = ""
         self.is_do_not_generate = is_do_not_generate
+        self.uuid_2_nodes = {}
 
     def get_nodes(self):
         res = []
@@ -17,7 +18,7 @@ def get_nodes(self):
         return res
 
     def get_node_by_uuid(self, uuid):
-        for n in self.get_nodes():
-            if n.uuid == uuid:
-                return n
-        return None
+        if len(self.uuid_2_nodes) == 0:
+            for n in self.get_nodes():
+                self.uuid_2_nodes[n.uuid] = n
+        return self.uuid_2_nodes[uuid]

mps-cli-py/src/mpscli/model/SNode.py

@@ -10,7 +10,7 @@ def __init__(self, uuid, concept, role_in_parent):
         self.children = []
 
     def get_property(self, name):
-        return self.properties[name]
+        return self.properties.get(name)
 
     def get_reference(self, name):
         return self.references[name]

mps-cli-py/src/mpscli/model/SRepository.py

@@ -4,6 +4,7 @@ class SRepository:
     def __init__(self):
         self.solutions = []
         self.languages = []
+        self.uuid_2_model = {}
 
     def find_solution_by_name(self, name):
         for sol in self.solutions:
@@ -52,8 +53,8 @@ def get_nodes_of_concept(self, concept_name):
         return res
 
     def get_model_by_uuid(self, uuid):
-        for sol in self.solutions:
-            for m in sol.models:
-                if m.uuid == uuid:
-                    return m
-        return None
+        if len(self.uuid_2_model) == 0:
+            for sol in self.solutions:
+                for m in sol.models:
+                    self.uuid_2_model[m.uuid] = m
+        return self.uuid_2_model.get(uuid)