Use scrollable result to reindex ES instead of paginated queries

src/main/java/org/genesys2/server/servlet/controller/AdminController.java

@@ -46,9 +46,6 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.cache.Cache;
 import org.springframework.cache.CacheManager;
 import org.springframework.core.task.TaskExecutor;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.PageRequest;
-import org.springframework.data.elasticsearch.core.query.IndexQuery;
 import org.springframework.jdbc.core.RowCallbackHandler;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
@@ -151,34 +148,14 @@ public class AdminController {
 
 		AppliedFilters filters = mapper.readValue(jsonFilter, AppliedFilters.class);
 
-		int page = 0, size = 100;
-		List<IndexQuery> queries = new ArrayList<IndexQuery>();
-		do {
-			LOG.info("Reindexing progress " + (page * size));
-			queries.clear();
-
-			Page<Accession> accessions = filterService.listAccessions(filters, new PageRequest(page, size));
-
-			if (!accessions.hasContent()) {
-				LOG.info("No more content");
-				break;
-			}
-
-			page++;
-
-			for (Accession a : accessions) {
-				elasticUpdater.update(Accession.class, a.getId());
-			}
+		genesysLowlevelRepository.listAccessionIds(filters, null, new RowCallbackHandler() {
+			@Override
+			public void processRow(ResultSet rs) throws SQLException {
+				long accessionId = rs.getLong(1);
 
-			if (slow) {
-				try {
-					Thread.sleep(50);
-				} catch (InterruptedException e) {
-					break;
+				elasticUpdater.update(Accession.class, accessionId);
 			}
-			}
-
-		} while (true);
+		});
 
 		LOG.info("Done.");