oai: fix error on document type processing

* Closes rero#789.

Co-Authored-by: Bertrand Zuchuat <bertrand.zuchuat@rero.ch>

sonar/modules/documents/serializers/dc.py

@@ -17,12 +17,22 @@
 
 """Dublin Core serializer."""
 
+from invenio_records_rest.serializers.base import PreprocessorMixin
 from invenio_records_rest.serializers.dc import DublinCoreSerializer
 
 
 class SonarDublinCoreSerializer(DublinCoreSerializer):
     """Marshmallow based DublinCore serializer for records."""
 
+    @staticmethod
+    def preprocess_search_hit(pid, record_hit, links_factory=None, **kwargs):
+        """Prepare a record hit from Elasticsearch for serialization."""
+        # TODO: SET VERSION BEFORE PROCESS RECORD. FIND BETTER SOLUTION.
+        if '_version' not in record_hit:
+            record_hit['_version'] = 1;
+        return PreprocessorMixin.preprocess_search_hit(
+            pid, record_hit, links_factory=None, **kwargs)
+
     def dump(self, obj, context=None):
         """Serialize object with schema.
 

sonar/modules/documents/serializers/schemas/dc.py

@@ -249,11 +249,12 @@ def get_titles(self, obj):
 
     def get_types(self, obj):
         """Get types."""
-        if obj['metadata'].get('documentType'):
-            return [
-                'http://purl.org/coar/resource_type/{type}'.format(
-                    type=obj['metadata']['documentType'].split(':')[1])
-            ]
+        if obj['metadata'].get('documentType', ''):
+            types = obj['metadata'].get('documentType', '').split(':')
+            if len(types) == 1:
+                return [f'{types[0]}']
+            if len(types) == 2:
+                return [f'http://purl.org/coar/resource_type/{types[1]}']
 
         return []
 

tests/ui/documents/test_dc_schema.py

@@ -458,6 +458,10 @@ def test_types(minimal_document):
     result = dc_v1.transform_record(minimal_document['pid'], minimal_document)
     assert result['types'] == []
 
+    minimal_document['documentType'] = 'advanced_studies_thesis'
+    result = dc_v1.transform_record(minimal_document['pid'], minimal_document)
+    assert result['types'] == ['advanced_studies_thesis']
+
     minimal_document['documentType'] = 'coar:c_2f33'
     result = dc_v1.transform_record(minimal_document['pid'], minimal_document)
     assert result['types'] == ['http://purl.org/coar/resource_type/c_2f33']