src/main/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationController.java

@@ -52,7 +52,7 @@ public class HsOfficeRelationController implements HsOfficeRelationsApi {
         context.define(currentSubject, assumedRoles);
 
         final var entities = relationRbacRepo.findRelationRelatedToPersonUuidAndRelationType(personUuid,
-                mapper.map(relationType, HsOfficeRelationType.class));
+                 relationType == null ? null : HsOfficeRelationType.valueOf(relationType.name()));
 
         final var resources = mapper.mapList(entities, HsOfficeRelationResource.class,
                 RELATION_ENTITY_TO_RESOURCE_POSTMAPPER);

src/main/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationRbacRepository.java

@@ -13,7 +13,7 @@ public interface HsOfficeRelationRbacRepository extends Repository<HsOfficeRelat
     Optional<HsOfficeRelationRbacEntity> findByUuid(UUID id);
 
     default List<HsOfficeRelationRbacEntity> findRelationRelatedToPersonUuidAndRelationType(@NotNull UUID personUuid, HsOfficeRelationType relationType) {
-        return findRelationRelatedToPersonUuidAndRelationTypeString(personUuid, relationType.toString());
+        return findRelationRelatedToPersonUuidAndRelationTypeString(personUuid, relationType == null ? null : relationType.toString());
     }
 
     @Query(value = """

src/main/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationRealRepository.java

@@ -13,7 +13,7 @@ public interface HsOfficeRelationRealRepository extends Repository<HsOfficeRelat
     Optional<HsOfficeRelationRealEntity> findByUuid(UUID id);
 
     default List<HsOfficeRelationRealEntity> findRelationRelatedToPersonUuidAndRelationType(@NotNull UUID personUuid, HsOfficeRelationType relationType) {
-        return findRelationRelatedToPersonUuidAndRelationTypeString(personUuid, relationType.toString());
+        return findRelationRelatedToPersonUuidAndRelationTypeString(personUuid, relationType == null ? null : relationType.toString());
     }
 
     @Query(value = """

src/test/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationControllerAcceptanceTest.java

@@ -55,7 +55,7 @@ class HsOfficeRelationControllerAcceptanceTest extends ContextBasedTestWithClean
     class ListRelations {
 
         @Test
-        void globalAdmin_withoutAssumedRoles_canViewAllRelationsOfGivenPersonAndType_ifNoCriteriaGiven() throws JSONException {
+        void globalAdmin_withoutAssumedRoles_canViewAllRelationsOfGivenPersonAndType() throws JSONException {
 
             // given
             context.define("superuser-alex@hostsharing.net");
@@ -111,6 +111,64 @@ class HsOfficeRelationControllerAcceptanceTest extends ContextBasedTestWithClean
                     """));
                 // @formatter:on
         }
+
+        @Test
+        void personAdmin_canViewAllRelationsOfGivenRelatedPersonAndAnyType() throws JSONException {
+
+            // given
+            context.define("contact-admin@firstcontact.example.com");
+            final var givenPerson = personRepo.findPersonByOptionalNameLike("First GmbH").get(0);
+
+            RestAssured // @formatter:off
+                    .given()
+                    .header("current-subject", "superuser-alex@hostsharing.net")
+                    .port(port)
+                    .when()
+                    .get("http://localhost/api/hs/office/relations?personUuid=%s"
+                            .formatted(givenPerson.getUuid(), HsOfficeRelationTypeResource.PARTNER))
+                    .then().log().all().assertThat()
+                    .statusCode(200)
+                    .contentType("application/json")
+                    .body("", lenientlyEquals("""
+                    [
+                         {
+                             "anchor": {
+                                 "tradeName": "First GmbH"
+                             },
+                             "holder": {
+                                 "givenName": "Susan",
+                                 "familyName": "Firby"
+                             },
+                             "type": "REPRESENTATIVE",
+                             "mark": null,
+                             "contact": { "caption": "first contact" }
+                         },
+                         {
+                             "anchor": {
+                                 "tradeName": "Hostsharing eG"
+                             },
+                             "holder": {
+                                 "tradeName": "First GmbH"
+                             },
+                             "type": "PARTNER",
+                             "mark": null,
+                             "contact": { "caption": "first contact" }
+                         },
+                         {
+                             "anchor": {
+                                 "tradeName": "First GmbH"
+                             },
+                             "holder": {
+                                 "tradeName": "First GmbH"
+                             },
+                             "type": "DEBITOR",
+                             "mark": null,
+                             "contact": { "caption": "first contact" }
+                         }
+                     ]
+                    """));
+            // @formatter:on
+        }
     }
 
     @Nested

src/test/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationRepositoryIntegrationTest.java

@@ -163,7 +163,7 @@ class HsOfficeRelationRepositoryIntegrationTest extends ContextBasedTestWithClea
     }
 
     @Nested
-    class FindAllRelations {
+    class FindRelations {
 
         @Test
         public void globalAdmin_withoutAssumedRole_canViewAllRelationsOfArbitraryPerson() {
@@ -193,7 +193,7 @@ class HsOfficeRelationRepositoryIntegrationTest extends ContextBasedTestWithClea
                     .findFirst().orElseThrow();
 
             // when:
-            final var result = relationRbacRepo.findRelationRelatedToPersonUuid(person.getUuid());
+            final var result = relationRbacRepo.findRelationRelatedToPersonUuidAndRelationType(person.getUuid(), null);
 
             // then:
             exactlyTheseRelationsAreReturned(