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Prioritize most recent publications.

This commit is contained in:
Lampros Smyrnaios 2023-04-10 15:00:23 +03:00
parent 484cf5cefc
commit 37363100fd
1 changed files with 4 additions and 3 deletions
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src/main/java/eu/openaire/urls_controller/services/UrlsServiceImpl.java
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@ -87,8 +87,8 @@ public class UrlsServiceImpl implements UrlsService {
// Create the Assignments from the id-urls stored in the database up to the < assignmentsLimit >.
String findAssignmentsQuery =
"select pubid, url, datasourceid, datasourcename\n" +
"from (select distinct pubid, url, datasourceid, datasourcename, attempt_count\n" +
" from (select p.id as pubid, pu.url as url, d.id as datasourceid, d.name as datasourcename, attempts.counts as attempt_count\n" +
"from (select distinct pubid, url, datasourceid, datasourcename, attempt_count, pub_year\n" +
" from (select p.id as pubid, p.year as pub_year, pu.url as url, d.id as datasourceid, d.name as datasourcename, attempts.counts as attempt_count\n" +
" from " + ImpalaConnector.databaseName + ".publication p\n" +
" join " + ImpalaConnector.databaseName + ".publication_urls pu on pu.id=p.id\n" +
" join " + ImpalaConnector.databaseName + ".datasource d on d.id=p.datasourceid\n" +
@ -106,10 +106,11 @@ public class UrlsServiceImpl implements UrlsService {
" and pu.url != '' and pu.url is not null\n" + // Some IDs have empty-string urls, there are no "null" urls, but keep the relevant check for future-proofing.
" limit " + (assignmentsLimit * 10) + ")\n" +
" as non_distinct_results\n" +
" order by coalesce(attempt_count, 0), reverse(pubid), url\n" +
" order by coalesce(attempt_count, 0), coalesce(pub_year, 0) desc, reverse(pubid), url\n" +
" limit " + assignmentsLimit + ")\n" +
"as findAssignmentsQuery";
// The "order by" in the end makes sure the older attempted records will be re-attempted after a long time.
//logger.debug("findAssignmentsQuery:\n" + findAssignmentsQuery); // DEBUG!