Resolved an issue in FileEntitySchema for empty MIME types (CMEM-6623)

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this project adheres to [Semantic Versioning](https://semver.org/)
 
+## Unreleased
+
+### Fixed
+
+- Resolved an issue in `FileEntitySchema` for empty MIME types (CMEM-6623).
+
 ## [4.10.1] 2025-05-08 - shipped with DI v25.1.1
 
 ### Fixed

cmem_plugin_base/dataintegration/typed_entities/file.py

@@ -47,14 +47,14 @@ def to_entity(self, value: File) -> Entity:
         """Create a generic entity from a file"""
         return Entity(
             uri=instance_uri(value.path),
-            values=[[value.path], [value.file_type], [value.mime or ""]],
+            values=[[value.path], [value.file_type], [value.mime] if value.mime else []],
         )
 
     def from_entity(self, entity: Entity) -> File:
         """Create a file entity from a generic entity."""
         path = entity.values[0][0]
         file_type = entity.values[1][0]
-        mime = entity.values[2][0] if entity.values[2][0] else None
+        mime = entity.values[2][0] if entity.values[2] and entity.values[2][0] else None
         match file_type:
             case "Local":
                 return LocalFile(path, mime)