[SHARE-633][Fix] Parse datacite description and tags (#650)

* [SHARE-633][Fix] Datacite.org parse description and tags
* Update datacite source.yaml
* Fix description and tags parsing

* Remove use of concat

Author: sheriefvt

share/sources/org.datacite/source.yaml

@@ -27,6 +27,7 @@ configs:
       namespaces:
           'http://purl.org/dc/elements/1.1/': dc
           'http://datacite.org/schema/kernel-3': null
+          'http://datacite.org/schema/kernel-4': null
           'http://www.openarchives.org/OAI/2.0/': null
           'http://schema.datacite.org/oai/oai-1.0/': null
           'http://www.openarchives.org/OAI/2.0/oai_dc/': null

share/transformers/org_datacite.py

@@ -488,9 +488,14 @@ def get_schema(self, type):
         force_text,
         tools.Try(ctx.record.metadata['oai_datacite'].payload.resource.titles.title)
     )
-    description = tools.RunPython(
-        force_text,
-        tools.Try(ctx.record.metadata['oai_datacite'].payload.resource.descriptions.description[0])
+
+    description = tools.Try(
+        tools.Join(
+            tools.RunPython(
+                'text_list',
+                tools.Try(ctx.record.metadata['oai_datacite'].payload.resource.descriptions.description)
+            )
+        )
     )
 
     rights = tools.Try(
@@ -541,22 +546,20 @@ def get_schema(self, type):
         tools.Subjects(
             tools.RunPython(
                 'text_list',
-                tools.Concat(
-                    tools.Try(ctx.record.metadata['oai_datacite'].payload.resource.subjects.subject),
-                )
+                tools.Try(ctx.record.metadata['oai_datacite'].payload.resource.subjects.subject)
             )
         )
     )
 
     tags = tools.Map(
         tools.Delegate(ThroughTags),
         tools.RunPython(
-            force_text,
+            'text_list',
             tools.Concat(
                 tools.Maybe(tools.Maybe(ctx.record, 'metadata')['oai_datacite'], 'type'),
                 tools.RunPython(
                     'text_list',
-                    (tools.Concat(tools.Try(ctx.record.metadata['oai_datacite'].payload.resource.subjects.subject)))
+                    tools.Try(ctx.record.metadata['oai_datacite'].payload.resource.subjects.subject)
                 ),
                 tools.Try(ctx.record.metadata['oai_datacite'].payload.resource.formats.format),
                 tools.Try(ctx.record.metadata['oai_datacite'].datacentreSymbol),