src/main/java/net/hostsharing/hsadminng/hs/office/coopassets/HsOfficeCoopAssetsTransactionEntity.java

@@ -105,6 +105,13 @@ public class HsOfficeCoopAssetsTransactionEntity implements Stringifyable, RbacO
     @OneToOne(mappedBy = "adjustedAssetTx")
     private HsOfficeCoopAssetsTransactionEntity adjustmentAssetTx;
 
+    @Override
+    public HsOfficeCoopAssetsTransactionEntity load() {
+        RbacObject.super.load();
+        membership.load();
+        return this;
+    }
+
     public String getTaggedMemberNumber() {
         return ofNullable(membership).map(HsOfficeMembershipEntity::toShortString).orElse("M-???????");
     }

src/main/java/net/hostsharing/hsadminng/hs/office/coopshares/HsOfficeCoopSharesTransactionEntity.java

@@ -102,6 +102,13 @@ public class HsOfficeCoopSharesTransactionEntity implements Stringifyable, RbacO
     @OneToOne(mappedBy = "adjustedShareTx")
     private HsOfficeCoopSharesTransactionEntity adjustmentShareTx;
 
+    @Override
+    public HsOfficeCoopSharesTransactionEntity load() {
+        RbacObject.super.load();
+        membership.load();
+        return this;
+    }
+
     @Override
     public String toString() {
         return stringify.apply(this);

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

@@ -92,7 +92,7 @@ public class HsOfficeDebitorEntity implements RbacObject<HsOfficeDebitorEntity>,
                 WHERE pRel.holderUuid = dRel.anchorUuid
             )
             """)
-    @NotFound(action = NotFoundAction.IGNORE)
+    @NotFound(action = NotFoundAction.IGNORE) // TODO.impl: map a simplified raw-PartnerEntity, just for the partner-number
     private HsOfficePartnerEntity partner;
 
     @Column(name = "debitornumbersuffix", length = 2)
@@ -120,6 +120,7 @@ public class HsOfficeDebitorEntity implements RbacObject<HsOfficeDebitorEntity>,
 
     @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "refundbankaccountuuid")
+    @NotFound(action = NotFoundAction.IGNORE)
     private HsOfficeBankAccountEntity refundBankAccount;
 
     @Column(name = "defaultprefix", columnDefinition = "char(3) not null")
@@ -128,7 +129,9 @@ public class HsOfficeDebitorEntity implements RbacObject<HsOfficeDebitorEntity>,
     @Override
     public HsOfficeDebitorEntity load() {
         RbacObject.super.load();
-        partner.load();
+        if (partner != null) {
+            partner.load();
+        }
         debitorRel.load();
         if (refundBankAccount != null) {
             refundBankAccount.load();

src/test/java/net/hostsharing/hsadminng/hs/office/coopassets/HsOfficeCoopAssetsTransactionRepositoryIntegrationTest.java

@@ -62,7 +62,7 @@ class HsOfficeCoopAssetsTransactionRepositoryIntegrationTest extends ContextBase
             // given
             context("superuser-alex@hostsharing.net");
             final var count = coopAssetsTransactionRepo.count();
-            final var givenMembership = membershipRepo.findMembershipByMemberNumber(1000101);
+            final var givenMembership = membershipRepo.findMembershipByMemberNumber(1000101).load();
 
             // when
             final var result = attempt(em, () -> {

src/test/java/net/hostsharing/hsadminng/hs/office/coopshares/HsOfficeCoopSharesTransactionRepositoryIntegrationTest.java

@@ -61,7 +61,7 @@ class HsOfficeCoopSharesTransactionRepositoryIntegrationTest extends ContextBase
             // given
             context("superuser-alex@hostsharing.net");
             final var count = coopSharesTransactionRepo.count();
-            final var givenMembership = membershipRepo.findMembershipByMemberNumber(1000101);
+            final var givenMembership = membershipRepo.findMembershipByMemberNumber(1000101).load();
 
             // when
             final var result = attempt(em, () -> {

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

@@ -720,7 +720,7 @@ class HsOfficeDebitorControllerAcceptanceTest extends ContextBasedTestWithCleanu
     private HsOfficeDebitorEntity givenSomeTemporaryDebitor() {
         return jpaAttempt.transacted(() -> {
             context.define("superuser-alex@hostsharing.net");
-            final var givenPartner = partnerRepo.findPartnerByOptionalNameLike("Fourth").get(0);
+            final var givenPartner = partnerRepo.findPartnerByOptionalNameLike("Fourth").get(0).load();
             final var givenContact = contactRepo.findContactByOptionalCaptionLike("fourth contact").get(0);
             final var newDebitor = HsOfficeDebitorEntity.builder()
                     .debitorNumberSuffix(nextDebitorSuffix())

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

@@ -14,6 +14,7 @@ import net.hostsharing.hsadminng.rbac.rbacrole.RawRbacRoleRepository;
 import net.hostsharing.hsadminng.mapper.Array;
 import net.hostsharing.hsadminng.rbac.test.JpaAttempt;
 import org.hibernate.Hibernate;
+import org.hibernate.exception.GenericJDBCException;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
@@ -23,7 +24,6 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
 import org.springframework.boot.test.mock.mockito.MockBean;
 import org.springframework.context.annotation.Import;
-import org.springframework.orm.jpa.JpaObjectRetrievalFailureException;
 import org.springframework.orm.jpa.JpaSystemException;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -83,12 +83,14 @@ class HsOfficeDebitorRepositoryIntegrationTest extends ContextBasedTestWithClean
             // given
             context("superuser-alex@hostsharing.net");
             final var count = debitorRepo.count();
+            final var givenPartner = partnerRepo.findPartnerByPartnerNumber(10001);
             final var givenPartnerPerson = one(personRepo.findPersonByOptionalNameLike("First GmbH"));
             final var givenContact = one(contactRepo.findContactByOptionalCaptionLike("first contact"));
 
             // when
             final var result = attempt(em, () -> {
                 final var newDebitor = HsOfficeDebitorEntity.builder()
+                        .partner(givenPartner)
                         .debitorNumberSuffix("21")
                         .debitorRel(HsOfficeRelationEntity.builder()
                                 .type(HsOfficeRelationType.DEBITOR)
@@ -472,7 +474,7 @@ class HsOfficeDebitorRepositoryIntegrationTest extends ContextBasedTestWithClean
 
             // then
             result.assertExceptionWithRootCauseMessage(
-                    JpaObjectRetrievalFailureException.class,
+                    GenericJDBCException.class,
                     // this technical error message gets translated to a [403] error at the controller level
                     "Unable to find net.hostsharing.hsadminng.hs.office.bankaccount.HsOfficeBankAccountEntity with id ");
         }
@@ -613,6 +615,7 @@ class HsOfficeDebitorRepositoryIntegrationTest extends ContextBasedTestWithClean
             final var givenBankAccount =
                     bankAccountHolder != null ? one(bankAccountRepo.findByOptionalHolderLike(bankAccountHolder)) : null;
             final var newDebitor = HsOfficeDebitorEntity.builder()
+                    .partner(givenPartner)
                     .debitorNumberSuffix("20")
                     .debitorRel(HsOfficeRelationEntity.builder()
                             .type(HsOfficeRelationType.DEBITOR)