#560: object: add index from json if it exists to object

src/lbaf/IO/lbsVTDataReader.py

@@ -294,7 +294,8 @@ def _populate_rank(self, phase_id: int, rank_id: int) -> Tuple[Rank,dict]:
                 load=task_load,
                 user_defined=task_user_defined,
                 subphases=subphases,
-                collection_id=collection_id)
+                collection_id=collection_id,
+                index=index)
 
             # Update shared block information as needed
             if (shared_id := task_user_defined.get("shared_id", -1)) > -1:
@@ -306,8 +307,6 @@ def _populate_rank(self, phase_id: int, rank_id: int) -> Tuple[Rank,dict]:
 
             # Add dict of currently unused parameters
             unused_params = {}
-            if index is not None:
-                unused_params["index"] = index
             if objgroup_id is not None:
                 unused_params["objgroup_id"] = objgroup_id
             o.set_unused_params(unused_params)

src/lbaf/IO/lbsVTDataWriter.py

@@ -123,6 +123,9 @@ def __create_tasks(self, rank_id, objects, migratable):
             if o.get_collection_id() is not None:
                 task_data["entity"]["collection_id"] = o.get_collection_id()
 
+            if o.get_index() is not None:
+                task_data["entity"]["index"] = o.get_index()
+
             if unused_params:
                 task_data["entity"].update(unused_params)
 

src/lbaf/Model/lbsObject.py

@@ -58,6 +58,7 @@ class Object:
     :arg user_defined: user defined data dict, defaults to None
     :arg subphases: list of subphases, defaults to None
     :arg collection_id: collection id (required for migratable objects)
+    :arg index: the n-dimensional index for an object that belongs to a collection
     """
 
     def __init__(
@@ -70,7 +71,8 @@ def __init__(
         comm: Optional[ObjectCommunicator]=None,
         user_defined: dict=None,
         subphases: list=None,
-        collection_id: Optional[int] = None):
+        collection_id: Optional[int] = None,
+        index: Optional[list] = None):
 
         # Check that id is provided as defined in LBDatafile schema
         if packed_id is None and seq_id is None:
@@ -151,6 +153,9 @@ def __init__(
         else:
             raise TypeError(f"subphases: {subphases} is of type {type(subphases)} but must be <class 'list'>")
 
+        if index is not None:
+           self.__index = index
+
     def __repr__(self):
         return f"Object id: {self.get_id()}, load: {self.__load}"
 
@@ -174,6 +179,14 @@ def set_collection_id(self, collection_id: Optional[int]):
         """ Set object collection ID (required for migratable objects)."""
         self.__collection_id = collection_id
 
+    def get_index(self) -> Optional[list]:
+        """Return the object's index."""
+        return self.__index
+
+    def set_index(self, index: Optional[list]):
+        """Set an object's index."""
+        self.__index = index
+
     def set_load(self, load: float):
         """ Set object load."""
         self.__load = load