cgspace-notes/content/posts/2024-04.md

title	date	author	categories
April, 2024	2024-04-04T10:23:00+03:00	Alan Orth	Notes

2024-04-04

• Work on CGSpace duplicate DOIs more

2024-04-08

• Start working on IFPRI's 2022 batch import
  • I ran the duplicate checker against CGSpace and started downloading all linked PDFs

2024-04-09

• Continue working on IFPRI's 2022 batch import
  • I started validating the potential duplicates in OpenRefine

2024-04-12

• Finish working on the 650 IFPRI 2022 records that were not already on CGSpace, then uploaded them
  • I need to merge the metadata for the remaining 212 that are already on CGSpace
• Spend some time looking at duplicate DOIs again...

2024-04-13

• Spend some time looking at duplicate DOIs again...

2024-04-14

• Spend some time looking at duplicate DOIs again...

2024-04-15

• Spend some time looking at duplicate DOIs again...
• Delete ~260 duplicate metadata values using the elaborate SQL and sort method I documented here: https://github.com/DSpace/DSpace/issues/8253#issuecomment-1331756418
• Tony noticed that the DSpace 7 REST API is very slow with the embeds so I profiled a bit:

$ time curl -s -o /dev/null 'https://cgspace.cgiar.org/server/api/discover/search/objects?query=cg.identifier.project%3AIFPRI*&scope=8f1e9650-fe87-4e6e-889a-1cacfb747408&page=0&size=100&embed=thumbnail,bundles/bitstreams&sort=dcterms.issued,desc'
curl -s -o /dev/null   0.01s user 0.01s system 0% cpu 47.515 total
$ time curl -s -o /dev/null 'https://cgspace.cgiar.org/server/api/discover/search/objects?query=cg.identifier.project%3AIFPRI*&scope=8f1e9650-fe87-4e6e-889a-1cacfb747408&page=0&size=100&sort=dcterms.issued,desc'
curl -s -o /dev/null   0.01s user 0.01s system 0% cpu 4.764 total

• Finalize processing the remaining 206 items from the IFPRI 2022 batch set that already existed on CGSpace
  • I merged metadata with the existing items
  • There are still six remaining items that I identified as being duplicates (3x2) in the IFPRI set itself

2024-04-16

• Spend some time looking at duplicate DOIs again...
• Assist Deborah with an advanced query on CGSpace for biodiversity and health:

dcterms.issued:[2010 TO 2024] AND dcterms.type:"Journal Article" AND (dc.title:"biodiversity" OR dcterms.subject:"biodiversity" OR dc.title:"health" OR dcterms.subject:"health")

• Remove CIMMYT URLs and citations from 277 journal articles on CGSpace since it is a bit tacky
  • I used this Jython expression in OpenRefine with Crossref's content negotiation to get citations for all DOIs:

import urllib2

doi = cells['cg.identifier.doi[en_US]'].value
url = "https://api.crossref.org/works/" + doi + "/transform/text/x-bibliography"
useragent = "Python (mailto:a.o@cgiar.org)"

request = urllib2.Request(url.encode("utf-8"), headers={"User-Agent" : useragent})
get = urllib2.urlopen(request)

return get.read().decode('utf-8')

• It took ten or so minutes for it to finish (and note this is Python 2 inside OpenRefine so I had to be careful with Unicode), but worked well!

2024-04-18

• Write a SQL query to build the IFPRI CONTENTdm redirects to Handles:

SELECT m.text_value, h.handle FROM metadatavalue m JOIN handle h on m.dspace_object_id = h.resource_id WHERE m.metadata_field_id=28 AND m.text_value LIKE 'Original URL%' AND h.resource_type_id=2;

• Similarly, I need a SQL query to get the redirects for duplicate Handles, querying for dcterms.replaces:

SELECT m.text_value AS handle_from, h.handle AS handle_to FROM metadatavalue m JOIN handle h on m.dspace_object_id = h.resource_id WHERE m.metadata_field_id=181 AND h.resource_type_id=2;

• Then I can work that list into an nginx map with redirect, for example:

server {
...

    if ($new_uri) {
        return 301 $new_uri;
    }
}

map $request_uri $new_uri {
    /handle/10568/112821 /handle/10568/97605;
}