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Improve prioritization of "publication_boost" records, by adding a second ordering in the end.

This commit is contained in:
Lampros Smyrnaios 2023-09-04 15:34:37 +03:00
parent 98516498eb
commit acef891167
1 changed files with 3 additions and 3 deletions
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6
src/main/java/eu/openaire/urls_controller/services/UrlsServiceImpl.java
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@ -111,7 +111,7 @@ 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" + // Select the final sorted data with "assignmentsLimit".
"from (select distinct pubid, url, datasourceid, datasourcename, attempt_count, pub_year\n" + // Select the distinct id-url data. Beware that this will return duplicate id-url paris, wince one pair may be associated with multiple datasources.
"from (select distinct pubid, url, datasourceid, datasourcename, level, pub_year, attempt_count\n" + // Select the distinct id-url data. Beware that this will return duplicate id-url paris, wince one pair may be associated with multiple datasources.
" from (select p.id as pubid, pu.url as url, pb.level as level, attempts.counts as attempt_count, p.year as pub_year, d.id as datasourceid, d.name as datasourcename\n" + // Select all needed columns frm JOINs, order by "boost.level" and limit them to (assignmentsLimit * 10)
" from " + DatabaseConnector.databaseName + ".publication p\n" +
" join " + DatabaseConnector.databaseName + ".publication_urls pu on pu.id=p.id\n" +
@ -132,10 +132,10 @@ public class UrlsServiceImpl implements UrlsService {
" and coalesce(attempts.counts, 0) <= " + maxAttemptsPerRecordAtomic.get() + "\n" +
" and not exists (select 1 from " + DatabaseConnector.databaseName + ".attempt a where a.id=p.id and a.error_class = 'noRetry' limit 1)\n" +
" 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.
" order by coalesce(level, -1000) desc\n" +
" order by coalesce(level, 0) desc\n" +
" limit " + (assignmentsLimit * 10) + "\n" +
" ) as non_distinct_results\n" +
" order by coalesce(attempt_count, 0), coalesce(pub_year, 0) desc, reverse(pubid), url\n" + // We also order by reverse "pubid" and "url", in order to get the exactly same records for consecutive runs, all things being equal.
" order by coalesce(level, 0) desc, coalesce(pub_year, 0) desc, coalesce(attempt_count, 0), reverse(pubid), url\n" + // We also order by reverse "pubid" and "url", in order to get the exactly same records for consecutive runs, all things being equal.
" limit " + assignmentsLimit + "\n" +
") as findAssignmentsQuery";