remove extra asdf validation during DataModel.clone (#230)

Co-authored-by: Howard Bushouse <[email protected]>
spacetelescope · Dec 4, 2023 · d3d37c4 · d3d37c4
1 parent 6884f83
commit d3d37c4
Show file tree

Hide file tree

Showing 2 changed files with 6 additions and 1 deletion.
diff --git a/CHANGES.rst b/CHANGES.rst
@@ -22,6 +22,8 @@ Other
 
 - Add mrsptcorr ref_file to core.schema [#228]
 
+- Avoid unnecessary validation during ``DataModel.clone`` [#230] 
+
 - Replace uses of ``utcnow`` (deprecated in python 3.12) [#231] 
 
 - Updated JWST MIRI imager photom model to include time-dependent correction

diff --git a/src/stdatamodels/model_base.py b/src/stdatamodels/model_base.py
@@ -406,7 +406,10 @@ def close(self):
     def clone(target, source, deepcopy=False, memo=None):
         if deepcopy:
             instance = copy.deepcopy(source._instance, memo=memo)
-            target._asdf = AsdfFile(instance)
+            target._asdf = AsdfFile()
+            # assign to private '_tree' to avoid validation caused
+            # by either using AsdfFile(instance) or target._asdf = tree
+            target._asdf._tree = instance
             target._instance = instance
         else:
             target._asdf = source._asdf