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content/posts/2024-04.md

@@ -109,4 +109,42 @@ map $request_uri $new_uri {
 }
 ```
 
+## 2024-04-19
+
+- Spend some time looking at duplicate DOIs again...
+- Refresh ORCID identifiers from ORCID API and update CGSpace metadata and controlled vocabulary
+
+## 2024-04-20
+
+- I read an [interesting thread about DOI casing](https://github.com/greenelab/scihub/issues/9)
+  - Apparently the DOI specification says ASCII characters in DOIs are case insensitive
+  - Indeed, [Crossref recommends lower case](https://www.crossref.org/documentation/member-setup/constructing-your-dois/) for all DOIs
+  - I was curious about the DOIs in our database so I checked before and after lower casing:
+
+```console
+localhost/dspace7= ☘ \COPY (SELECT DISTINCT(text_value) FROM metadatavalue WHERE dspace_object_id IN (SELECT uuid FROM item) AND metadata_field_id=220 AND text_value IS NOT NULL AND text_value !='') TO /tmp/dois-sql-before.txt;
+COPY 25675
+localhost/dspace7= ☘ \COPY (SELECT DISTINCT(lower(text_value)) FROM metadatavalue WHERE dspace_object_id IN (SELECT uuid FROM item) AND metadata_field_id=220 AND text_value IS NOT NULL AND text_value !='') TO /tmp/dois-sql-after.txt;
+COPY 25666
+```
+
+- I need to investigate options for lower casing these in the repository, for example in a curation task, and in all workflows around DSpace metadata...
+
+## 2024-04-23
+
+- Spent some time writing a Java curation task to normalize DOIs in items when they enter the workflow edit step
+  - The workflow curation tasks are not documented very well but I got a basic configuration working
+  - I found a bug in DSpace curation tasks and discussed on Slack
+  - I finalized the `NormalizeDOIs` curation task and released v7.6.1.1 of the [cgspace-java-helpers](https://github.com/ilri/cgspace-java-helpers) project
+
+## 2024-04-24
+
+- A bit more testing of the curation tasks
+  - I tested a patch by Mark Wood
+- I added support for normalizing DOIs to this same format to my [csv-metadata-quality](https://github.com/ilri/csv-metadata-quality) project
+
+## 2024-04-25
+
+- I lowercased the remaining 3,900 DOIs on CGSpace that had uppercase ASCII characters
+
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