src/main/java/net/hostsharing/hsadminng/hs/office/debitor/HsOfficeDebitorController.java

@@ -57,12 +57,15 @@ public class HsOfficeDebitorController implements HsOfficeDebitorsApi {
             final String currentSubject,
             final String assumedRoles,
             final String name,
+            final UUID partnerUuid,
             final String partnerNumber) {
         context.define(currentSubject, assumedRoles);
 
         final var entities = partnerNumber != null
-                ? debitorRepo.findDebitorByPartnerNumber(cropTag("P-", partnerNumber))
+                ? debitorRepo.findDebitorsByPartnerNumber(cropTag("P-", partnerNumber))
-                : debitorRepo.findDebitorByOptionalNameLike(name);
+                    : partnerUuid != null
+                        ? debitorRepo.findDebitorsByPartnerUuid(partnerUuid)
+                        : debitorRepo.findDebitorsByOptionalNameLike(name);
 
         final var resources = mapper.mapList(entities, HsOfficeDebitorResource.class, ENTITY_TO_RESOURCE_POSTMAPPER);
         return ResponseEntity.ok(resources);

src/main/java/net/hostsharing/hsadminng/hs/office/debitor/HsOfficeDebitorRepository.java

@@ -14,6 +14,9 @@ public interface HsOfficeDebitorRepository extends Repository<HsOfficeDebitorEnt
     @Timed("app.office.debitors.repo.findByUuid")
     Optional<HsOfficeDebitorEntity> findByUuid(UUID id);
 
+    @Timed("app.office.debitors.repo.findDebitorByPartnerUuid")
+    List<HsOfficeDebitorEntity> findDebitorsByPartnerUuid(UUID partnerUuid);
+
     @Query("""
             SELECT debitor FROM HsOfficeDebitorEntity debitor
             JOIN HsOfficePartnerEntity partner
@@ -32,7 +35,7 @@ public interface HsOfficeDebitorRepository extends Repository<HsOfficeDebitorEnt
         return result.stream().reduce(Reducer::toSingleElement);
     }
 
-    default List<HsOfficeDebitorEntity> findDebitorByPartnerNumber(int partnerNumber) {
+    default List<HsOfficeDebitorEntity> findDebitorsByPartnerNumber(int partnerNumber) {
         final var result = findDebitorByPartnerNumberAndOptionalDebitorNumberSuffix(partnerNumber, null);
         return result;
     }
@@ -56,7 +59,7 @@ public interface HsOfficeDebitorRepository extends Repository<HsOfficeDebitorEnt
                     OR contact.caption like concat(cast(:name as text), '%')
                """)
     @Timed("app.office.debitors.repo.findDebitorByOptionalNameLike")
-    List<HsOfficeDebitorEntity> findDebitorByOptionalNameLike(String name);
+    List<HsOfficeDebitorEntity> findDebitorsByOptionalNameLike(String name);
 
     @Timed("app.office.debitors.repo.save")
     HsOfficeDebitorEntity save(final HsOfficeDebitorEntity entity);

src/main/resources/api-definition/hs-office/hs-office-debitors-with-debitorNumber.yaml

@@ -12,8 +12,8 @@ get:
           schema:
               type: number
               format: integer
-              minimum: 1000000
+#              minimum: 1000000
-              maximum: 9999999
+#              maximum: 9999999
           description: debitor-number of the debitor to fetch.
     responses:
         "200":

src/main/resources/api-definition/hs-office/hs-office-debitors.yaml

@@ -13,13 +13,20 @@ get:
           schema:
               type: string
           description: Prefix of name properties from person or contact to filter the results.
+        - name: partnerUuid
+          in: query
+          required: false
+          schema:
+              type: string
+              format: uuid
+          description: UUID of the business partner, exclusive to `memberNumber`.
         - name: partnerNumber
           in: query
           required: false
           schema:
               type: string
-              minLength: 9
+              minLength: 7
-              maxLength: 9
+              maxLength: 7
               pattern: 'P-[0-9]{5}'
           description: Partner number of the requested debitor.
     responses:

src/test/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemRepositoryIntegrationTest.java

@@ -120,7 +120,7 @@ class HsBookingItemRepositoryIntegrationTest extends ContextBasedTestWithCleanup
             // given
             context("superuser-alex@hostsharing.net");
             final var count = rbacBookingItemRepo.count();
-            final var givenDebitor = debitorRepo.findDebitorByOptionalNameLike("First").get(0);
+            final var givenDebitor = debitorRepo.findDebitorsByOptionalNameLike("First").get(0);
             final var givenProject = realProjectRepo.findAllByDebitorUuid(givenDebitor.getUuid()).get(0);
 
             // when
@@ -151,7 +151,7 @@ class HsBookingItemRepositoryIntegrationTest extends ContextBasedTestWithCleanup
 
             // when
             attempt(em, () -> {
-                final var givenDebitor = debitorRepo.findDebitorByOptionalNameLike("First").get(0);
+                final var givenDebitor = debitorRepo.findDebitorsByOptionalNameLike("First").get(0);
                 final var givenProject = realProjectRepo.findAllByDebitorUuid(givenDebitor.getUuid()).get(0);
                 final var newBookingItem = HsBookingItemRbacEntity.builder()
                         .project(givenProject)

src/test/java/net/hostsharing/hsadminng/hs/office/debitor/HsOfficeDebitorControllerAcceptanceTest.java

@@ -31,7 +31,10 @@ import static net.hostsharing.hsadminng.hs.office.relation.HsOfficeRelationType.
 import static net.hostsharing.hsadminng.rbac.test.IsValidUuidMatcher.isUuidValid;
 import static net.hostsharing.hsadminng.rbac.test.JsonMatcher.lenientlyEquals;
 import static org.assertj.core.api.Assertions.assertThat;
-import static org.hamcrest.Matchers.*;
+import static org.hamcrest.Matchers.containsString;
+import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.startsWith;
 
 @SpringBootTest(
         webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT,
@@ -74,6 +77,69 @@ class HsOfficeDebitorControllerAcceptanceTest extends ContextBasedTestWithCleanu
     @PersistenceContext
     EntityManager em;
 
+    @Nested
+    class GetSingleDebitor {
+
+        @Test
+        void globalAdmin_withoutAssumedRoles_canGetDebitorByDebitorUuid() {
+
+            final var givenDebitor = jpaAttempt.transacted(() -> {
+                context("superuser-alex@hostsharing.net");
+                return debitorRepo.findDebitorByDebitorNumber(1000212).orElseThrow();
+            }).assertSuccessful().returnedValue();
+
+            RestAssured // @formatter:off
+                .given()
+                    .header("current-subject", "superuser-alex@hostsharing.net")
+                    .port(port)
+                .when()
+                    .get("http://localhost/api/hs/office/debitors/" + givenDebitor.getUuid())
+                .then().log().all().assertThat()
+                    .statusCode(200)
+                    .contentType("application/json")
+                    .body("", lenientlyEquals("""
+                        {
+                            "debitorNumber": "D-1000212",
+                            "partner": { "partnerNumber": "P-10002" },
+                            "debitorRel": {
+                               "contact": { "caption": "second contact" }
+                            },
+                            "vatId": null,
+                            "vatCountryCode": null,
+                            "vatBusiness": true
+                        }
+                        """));
+            // @formatter:on
+        }
+
+        @Test
+        void globalAdmin_withoutAssumedRoles_canGetDebitorByDebitorNumber() {
+
+            RestAssured // @formatter:off
+                .given()
+                    .header("current-subject", "superuser-alex@hostsharing.net")
+                    .port(port)
+                .when()
+                    .get("http://localhost/api/hs/office/debitors/D-1000212")
+                .then().log().all().assertThat()
+                    .statusCode(200)
+                    .contentType("application/json")
+                    .body("", lenientlyEquals("""
+                         {
+                             "debitorNumber": "D-1000212",
+                             "partner": { "partnerNumber": "P-10002" },
+                             "debitorRel": {
+                                "contact": { "caption": "second contact" }
+                             },
+                             "vatId": null,
+                             "vatCountryCode": null,
+                             "vatBusiness": true
+                         }
+                        """));
+            // @formatter:on
+        }
+    }
+
     @Nested
     class GetListOfDebitors {
 
@@ -232,55 +298,6 @@ class HsOfficeDebitorControllerAcceptanceTest extends ContextBasedTestWithCleanu
                 // @formatter:on
         }
 
-        @Test
-        void globalAdmin_withoutAssumedRoles_canGetDebitorByDebitorNumber() {
-
-            RestAssured // @formatter:off
-                    .given()
-                    .header("current-subject", "superuser-alex@hostsharing.net")
-                    .port(port)
-                    .when()
-                    .get("http://localhost/api/hs/office/debitors/P-10002")
-                    .then().log().all().assertThat()
-                    .statusCode(200)
-                    .contentType("application/json")
-                    .body("", lenientlyEquals("""
-                     [
-                         {
-                             "debitorNumber": "D-1000211",
-                             "partner": { "partnerNumber": "P-10002" },
-                             "debitorRel": {
-                                "contact": { "caption": "second contact" }
-                             },
-                             "vatId": null,
-                             "vatCountryCode": null,
-                             "vatBusiness": true
-                         },
-                         {
-                             "debitorNumber": "D-1000212",
-                             "partner": { "partnerNumber": "P-10002" },
-                             "debitorRel": {
-                                "contact": { "caption": "second contact" }
-                             },
-                             "vatId": null,
-                             "vatCountryCode": null,
-                             "vatBusiness": true
-                         },
-                         {
-                             "debitorNumber": "D-1000213",
-                             "partner": { "partnerNumber": "P-10002" },
-                             "debitorRel": {
-                                "contact": { "caption": "second contact" }
-                             },
-                             "vatId": null,
-                             "vatCountryCode": null,
-                             "vatBusiness": true
-                         }
-                     ]
-                    """));
-                    // @formatter:on
-        }
-
         @Test
         void globalAdmin_withoutAssumedRoles_canFindDebitorsByPartnerNumber() {
 
@@ -289,7 +306,7 @@ class HsOfficeDebitorControllerAcceptanceTest extends ContextBasedTestWithCleanu
                     .header("current-subject", "superuser-alex@hostsharing.net")
                     .port(port)
                 .when()
-                    .get("http://localhost/api/hs/office/debitors?debitorNumber=D-1000212")
+                    .get("http://localhost/api/hs/office/debitors?partnerNumber=P-10002")
                 .then().log().all().assertThat()
                     .statusCode(200)
                     .contentType("application/json")
@@ -297,13 +314,9 @@ class HsOfficeDebitorControllerAcceptanceTest extends ContextBasedTestWithCleanu
                     [
                         {
                             "debitorNumber": "D-1000212",
-                             "partner": { "partnerNumber": "P-10002" },
+                            "partner": {
-                             "debitorRel": {
+                                "partnerNumber": "P-10002"
-                                "contact": { "caption": "second contact" }
+                            }
-                             },
-                             "vatId": null,
-                             "vatCountryCode": null,
-                             "vatBusiness": true
                         }
                     ]
                     """));
@@ -493,7 +506,7 @@ class HsOfficeDebitorControllerAcceptanceTest extends ContextBasedTestWithCleanu
         @Test
         void globalAdmin_withoutAssumedRole_canGetArbitraryDebitor() {
             context.define("superuser-alex@hostsharing.net");
-            final var givenDebitorUuid = debitorRepo.findDebitorByOptionalNameLike("First").get(0).getUuid();
+            final var givenDebitorUuid = debitorRepo.findDebitorsByOptionalNameLike("First").get(0).getUuid();
 
             RestAssured // @formatter:off
                 .given()
@@ -558,7 +571,7 @@ class HsOfficeDebitorControllerAcceptanceTest extends ContextBasedTestWithCleanu
         @Test
         void normalUser_canNotGetUnrelatedDebitor() {
             context.define("superuser-alex@hostsharing.net");
-            final var givenDebitorUuid = debitorRepo.findDebitorByOptionalNameLike("First").get(0).getUuid();
+            final var givenDebitorUuid = debitorRepo.findDebitorsByOptionalNameLike("First").get(0).getUuid();
 
             RestAssured // @formatter:off
                 .given()
@@ -573,7 +586,7 @@ class HsOfficeDebitorControllerAcceptanceTest extends ContextBasedTestWithCleanu
         @Test
         void contactAdminUser_canGetRelatedDebitorExceptRefundBankAccount() {
             context.define("superuser-alex@hostsharing.net");
-            final var givenDebitorUuid = debitorRepo.findDebitorByOptionalNameLike("first contact").get(0).getUuid();
+            final var givenDebitorUuid = debitorRepo.findDebitorsByOptionalNameLike("first contact").get(0).getUuid();
 
             RestAssured // @formatter:off
                 .given()

src/test/java/net/hostsharing/hsadminng/hs/office/debitor/HsOfficeDebitorRepositoryIntegrationTest.java

@@ -234,7 +234,7 @@ class HsOfficeDebitorRepositoryIntegrationTest extends ContextBasedTestWithClean
             context("superuser-alex@hostsharing.net");
 
             // when
-            final var result = debitorRepo.findDebitorByOptionalNameLike(null);
+            final var result = debitorRepo.findDebitorsByOptionalNameLike(null);
 
             // then
             allTheseDebitorsAreReturned(
@@ -256,7 +256,7 @@ class HsOfficeDebitorRepositoryIntegrationTest extends ContextBasedTestWithClean
             context("superuser-alex@hostsharing.net", assumedRole);
 
             // when:
-            final var result = debitorRepo.findDebitorByOptionalNameLike("");
+            final var result = debitorRepo.findDebitorsByOptionalNameLike("");
 
             // then:
             exactlyTheseDebitorsAreReturned(result,
@@ -270,7 +270,7 @@ class HsOfficeDebitorRepositoryIntegrationTest extends ContextBasedTestWithClean
             context("selfregistered-test-user@hostsharing.org");
 
             // when:
-            final var result = debitorRepo.findDebitorByOptionalNameLike(null);
+            final var result = debitorRepo.findDebitorsByOptionalNameLike(null);
 
             // then:
             assertThat(result).isEmpty();
@@ -303,7 +303,7 @@ class HsOfficeDebitorRepositoryIntegrationTest extends ContextBasedTestWithClean
             context("superuser-alex@hostsharing.net");
 
             // when
-            final var result = debitorRepo.findDebitorByPartnerNumber(10003);
+            final var result = debitorRepo.findDebitorsByPartnerNumber(10003);
 
             // then
             exactlyTheseDebitorsAreReturned(result,
@@ -320,7 +320,7 @@ class HsOfficeDebitorRepositoryIntegrationTest extends ContextBasedTestWithClean
             context("superuser-alex@hostsharing.net");
 
             // when
-            final var result = debitorRepo.findDebitorByOptionalNameLike("third contact");
+            final var result = debitorRepo.findDebitorsByOptionalNameLike("third contact");
 
             // then
             exactlyTheseDebitorsAreReturned(result, "debitor(D-1000313: rel(anchor='IF Third OHG', type='DEBITOR', holder='IF Third OHG'), thi)");

src/test/java/net/hostsharing/hsadminng/hs/office/scenarios/debitor/CreateSepaMandateForDebitor.java

@@ -17,9 +17,9 @@ public class CreateSepaMandateForDebitor extends UseCase<CreateSepaMandateForDeb
     protected HttpResponse run() {
 
         obtain("Debitor: Test AG - main debitor", () ->
-            httpGet("/api/hs/office/debitors?debitorNumber=&{debitorNumber}")
+            httpGet("/api/hs/office/debitors/%{debitorNumber}")
                     .expecting(OK).expecting(JSON),
-            response -> response.expectArrayElements(1).getFromBody("[0].uuid")
+            response -> response.getFromBody("uuid")
         );
 
         obtain("BankAccount: Test AG - debit bank account", () ->

src/test/java/net/hostsharing/hsadminng/hs/office/scenarios/membership/CancelMembership.java

@@ -18,9 +18,8 @@ public class CancelMembership extends UseCase<CancelMembership> {
     protected HttpResponse run() {
 
         obtain("Membership: %{memberNumber}", () ->
-                httpGet("/api/hs/office/memberships?memberNumber=%{memberNumber}")
+                httpGet("/api/hs/office/memberships/%{memberNumber}"),
-                        .expectArrayElements(1),
+                response -> response.getFromBody("uuid")
-                response -> response.expectArrayElements(1).getFromBody("[0].uuid")
         );
 
         return withTitle("Patch the New Status Into the Membership", () ->

src/test/java/net/hostsharing/hsadminng/hs/office/scenarios/membership/coopassets/CreateCoopAssetsTransaction.java

@@ -18,9 +18,9 @@ public abstract class CreateCoopAssetsTransaction extends UseCase<CreateCoopAsse
     protected HttpResponse run() {
 
         obtain("#{Find }membershipUuid", () ->
-            httpGet("/api/hs/office/memberships?memberNumber=&{memberNumber}")
+            httpGet("/api/hs/office/memberships/%{memberNumber}")
-                    .expecting(OK).expecting(JSON).expectArrayElements(1),
+                    .expecting(OK).expecting(JSON),
-            response -> response.getFromBody("$[0].uuid")
+            response -> response.getFromBody("uuid")
         );
 
         return withTitle("Create the Coop-Assets-%{transactionType} Transaction", () ->

src/test/java/net/hostsharing/hsadminng/hs/office/scenarios/membership/coopshares/CreateCoopSharesTransaction.java

@@ -18,9 +18,9 @@ public abstract class CreateCoopSharesTransaction extends UseCase<CreateCoopShar
     protected HttpResponse run() {
 
         obtain("#{Find }membershipUuid", () ->
-            httpGet("/api/hs/office/memberships?memberNumber=&{memberNumber}")
+            httpGet("/api/hs/office/memberships/%{memberNumber}")
-                    .expecting(OK).expecting(JSON).expectArrayElements(1),
+                    .expecting(OK).expecting(JSON),
-            response -> response.getFromBody("$[0].uuid")
+            response -> response.getFromBody("uuid")
         );
 
         return withTitle("Create the Coop-Shares-%{transactionType} Transaction", () ->

src/test/java/net/hostsharing/hsadminng/hs/office/sepamandate/HsOfficeSepaMandateControllerAcceptanceTest.java

@@ -138,7 +138,7 @@ class HsOfficeSepaMandateControllerAcceptanceTest extends ContextBasedTestWithCl
         void globalAdmin_canPostNewSepaMandate() {
 
             context.define("superuser-alex@hostsharing.net");
-            final var givenDebitor = debitorRepo.findDebitorByOptionalNameLike("Third").get(0);
+            final var givenDebitor = debitorRepo.findDebitorsByOptionalNameLike("Third").get(0);
             final var givenBankAccount = bankAccountRepo.findByIbanOrderByIbanAsc("DE02200505501015871393").get(0);
 
             final var location = RestAssured // @formatter:off
@@ -180,7 +180,7 @@ class HsOfficeSepaMandateControllerAcceptanceTest extends ContextBasedTestWithCl
         void globalAdmin_canNotPostNewSepaMandateWhenDebitorUuidIsMissing() {
 
             context.define("superuser-alex@hostsharing.net");
-            final var givenDebitor = debitorRepo.findDebitorByOptionalNameLike("Third").get(0);
+            final var givenDebitor = debitorRepo.findDebitorsByOptionalNameLike("Third").get(0);
             final var givenBankAccount = bankAccountRepo.findByIbanOrderByIbanAsc("DE02200505501015871393").get(0);
 
             final var location = RestAssured // @formatter:off
@@ -205,7 +205,7 @@ class HsOfficeSepaMandateControllerAcceptanceTest extends ContextBasedTestWithCl
         void globalAdmin_canNotPostNewSepaMandate_ifBankAccountDoesNotExist() {
 
             context.define("superuser-alex@hostsharing.net");
-            final var givenDebitor = debitorRepo.findDebitorByOptionalNameLike("Third").get(0);
+            final var givenDebitor = debitorRepo.findDebitorsByOptionalNameLike("Third").get(0);
             final var givenBankAccountUuid = UUID.fromString("00000000-0000-0000-0000-000000000000");
 
             final var location = RestAssured // @formatter:off

src/test/java/net/hostsharing/hsadminng/hs/office/sepamandate/HsOfficeSepaMandateRepositoryIntegrationTest.java

@@ -66,7 +66,7 @@ class HsOfficeSepaMandateRepositoryIntegrationTest extends ContextBasedTestWithC
             // given
             context("superuser-alex@hostsharing.net");
             final var count = sepaMandateRepo.count();
-            final var givenDebitor = debitorRepo.findDebitorByOptionalNameLike("First").get(0);
+            final var givenDebitor = debitorRepo.findDebitorsByOptionalNameLike("First").get(0);
             final var givenBankAccount = bankAccountRepo.findByOptionalHolderLike("Paul Winkler").get(0);
 
             // when
@@ -100,7 +100,7 @@ class HsOfficeSepaMandateRepositoryIntegrationTest extends ContextBasedTestWithC
 
             // when
             attempt(em, () -> {
-                final var givenDebitor = debitorRepo.findDebitorByOptionalNameLike("First").get(0);
+                final var givenDebitor = debitorRepo.findDebitorsByOptionalNameLike("First").get(0);
                 final var givenBankAccount = bankAccountRepo.findByOptionalHolderLike("Paul Winkler").get(0);
                 final var newSepaMandate = HsOfficeSepaMandateEntity.builder()
                         .debitor(givenDebitor)
@@ -397,7 +397,7 @@ class HsOfficeSepaMandateRepositoryIntegrationTest extends ContextBasedTestWithC
     private HsOfficeSepaMandateEntity givenSomeTemporarySepaMandate(final String iban) {
         return jpaAttempt.transacted(() -> {
             context("superuser-alex@hostsharing.net");
-            final var givenDebitor = debitorRepo.findDebitorByOptionalNameLike("First").get(0);
+            final var givenDebitor = debitorRepo.findDebitorsByOptionalNameLike("First").get(0);
             final var givenBankAccount = bankAccountRepo.findByIbanOrderByIbanAsc(iban).get(0);
             final var newSepaMandate = HsOfficeSepaMandateEntity.builder()
                     .debitor(givenDebitor)