API endpoint for listing accessions by set of UUIDs

- with Unit test

src/main/java/org/genesys2/server/api/v1/AccessionController.java

@@ -202,8 +202,19 @@ public class AccessionController {
 	}
 
 	/**
-	 * Converts AccessionIdentifiers to UUID
+	 * Gets accessions by list of uuid-s
 	 * 
+	 * @param uuids accession identifi`ers to lookup in DB
+	 * @return list of Accessions
+	 */
+	@PostMapping(value = "/for-uuid", produces = { MediaType.APPLICATION_JSON_VALUE })
+	public List<Accession> forUuids(@RequestBody Set<UUID> uuids) {
+		return accessionService.forUuids(uuids);
+	}
+
+	/**
+	 * Converts AccessionIdentifiers to UUID
+	 *
 	 * @param identifiers accession identifiers to lookup in DB
 	 * @return map with UUIDs and related AccessionIdentifiers
 	 */

src/main/java/org/genesys2/server/service/AccessionService.java

@@ -87,6 +87,7 @@ public interface AccessionService {
 	 */
 	Map<UUID, AccessionIdentifier3> toUUID(List<? extends AccessionIdentifier3> identifiers);
 
+	List<Accession> forUuids(Set<UUID> uuids);
 	/**
 	 * Loads {@link Accession} by IDs and executes the action on each accession in a
 	 * Spring transaction. Spring security context not supported.

src/main/java/org/genesys2/server/service/impl/AccessionServiceImpl.java

@@ -130,7 +130,22 @@ public class AccessionServiceImpl implements AccessionService {
 		return res;
 	}
 
-	@Override
+    @Override
+    public List<Accession> forUuids(Set<UUID> uuids) {
+		final int chunkSize = 100;
+
+		List<UUID> uuidList = new ArrayList<>(uuids);
+		List<Accession> accessions = new ArrayList<>(uuidList.size());
+
+		for (int i = 0; i < uuidList.size(); i+= chunkSize){
+			List<UUID> chunk = uuidList.subList(i, i+chunkSize);
+			accessions.addAll((List<Accession>) accessionRepository.findAll(QAccession.accession.accessionId.uuid.in(chunk)));
+		}
+
+		return accessions;
+    }
+
+    @Override
 	public long countAccessions(AccessionFilter filter) {
 		long total = elasticsearchService.count(Accession.class, filter);
 

src/test/java/org/genesys/test/server/api/v1/AccessionControllerTest.java

@@ -22,12 +22,15 @@ import static org.springframework.restdocs.mockmvc.MockMvcRestDocumentation.docu
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.UUID;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.stream.Collectors;
 
 import org.genesys.test.base.AbstractApiTest;
 import org.genesys2.server.api.v0.AccessionController;
-import org.genesys2.server.model.genesys.Accession;
+import org.genesys2.server.model.genesys.*;
 import org.genesys2.server.model.genesys.AccessionAlias.AliasType;
 import org.genesys2.server.model.impl.FaoInstitute;
 import org.genesys2.server.persistence.AccessionIdRepository;
@@ -35,6 +38,7 @@ import org.genesys2.server.persistence.AccessionRepository;
 import org.genesys2.server.persistence.FaoInstituteRepository;
 import org.genesys2.server.persistence.Taxonomy2Repository;
 import org.genesys2.server.service.InstituteService;
+import org.genesys2.server.service.TaxonomyService;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Rule;
@@ -81,6 +85,8 @@ public class AccessionControllerTest extends AbstractApiTest {
 	private InstituteService instituteService;
 	@Autowired
 	private Taxonomy2Repository taxonomyRepository;
+	@Autowired
+	private TaxonomyService taxonomyService;
 
 	MockMvc mockMvc;
 
@@ -146,6 +152,28 @@ public class AccessionControllerTest extends AbstractApiTest {
 		assertThat(accessionRepository.count(), is(1L));
 	}
 
+	@Test
+	public void getAccessionsTest() throws Exception {
+
+		// Also works with 2000, 5000, 10000, 15000
+		int amount = 1000;
+
+		List<Accession> accessions = setUpAccessions(amount);
+
+		assertThat(accessionRepository.count(), is((long)(amount)));
+
+		List<UUID> uuids = accessions.stream().map(Accession::getAccessionId).map(AccessionId::getUuid).collect(Collectors.toList());
+
+		final String s = objectMapper.writeValueAsString(uuids);
+
+		mockMvc.perform(post(org.genesys2.server.api.v1.AccessionController.API_BASE + "/for-uuid")
+				.contentType(MediaType.APPLICATION_JSON)
+				.content(s))
+				.andExpect(status().isOk())
+				.andExpect(jsonPath("$", hasSize(amount)));
+	}
+
+
 	@Test
 	public void updateAccessionNoChange() throws Exception {
 		ObjectNode accessionJson = setUpAccession();
@@ -367,6 +395,26 @@ public class AccessionControllerTest extends AbstractApiTest {
 		return objectMapper.readValue(responseBody, Accession.class);
 	}
 
+	private List<Accession> setUpAccessions(int amount) {
+		final List<Accession> accessions = new ArrayList<>(amount);
+
+		for (int i = 0; i < amount; i++) {
+			accessions.add(addAccessionInDB());
+		}
+		return accessionRepository.save(accessions);
+	}
+
+	private Accession addAccessionInDB() {
+		Accession a = new Accession();
+		a.setAccessionId(new AccessionId());
+		a.setInstitute(institute);
+		a.setAccessionNumber("ACC" + System.currentTimeMillis() + "-" + acceNumb.incrementAndGet());
+		Taxonomy2 taxon = new Taxonomy2();
+		taxon.setGenus("Hordeum");
+		a.setTaxonomy(taxonomyService.ensureTaxonomy(taxon));
+		return a;
+	}
+
 	private ObjectNode setUpAccession() {
 		ObjectNode accession = objectMapper.createObjectNode();
 		accession.put("instCode", institute.getCode());