src/main/java/net/hostsharing/hsadminng/rbac/rbacgrant/RbacGrantController.java

@@ -94,4 +94,17 @@ public class RbacGrantController implements RbacGrantsApi {
 
         return ResponseEntity.noContent().build();
     }
+
+// TODO: implement an endpoint to create a Mermaid flowchart with all grants of a given user
+//    @GetMapping(
+//            path = "/api/rbac/users/{userUuid}/grants",
+//            produces = {"text/vnd.mermaid"})
+//    @Transactional(readOnly = true)
+//    public ResponseEntity<String> allGrantsOfUserAsMermaid(
+//            @RequestHeader(name = "current-user") String currentUser,
+//            @RequestHeader(name = "assumed-roles", required = false) String assumedRoles) {
+//        final var graph = RbacGrantsDiagramService.allGrantsToUser(currentUser);
+//        return ResponseEntity.ok(graph);
+//    }
+
 }

src/main/java/net/hostsharing/hsadminng/rbac/rbacrole/RbacRoleType.java

@@ -1,5 +1,5 @@
 package net.hostsharing.hsadminng.rbac.rbacrole;
 
 public enum RbacRoleType {
-    owner, admin, agent, tenant, guest
+    owner, admin, agent, tenant, guest, referrer
 }

src/main/resources/db/changelog/007-table-columns.sql

@@ -0,0 +1,20 @@
+--liquibase formatted sql
+
+
+-- ============================================================================
+-- TABLE-COLUMNS-FUNCTION
+--changeset table-columns-function:1 endDelimiter:--//
+-- ----------------------------------------------------------------------------
+
+create or replace function columnsNames( tableName text )
+    returns text
+    stable
+    language 'plpgsql' as $$
+declare columns text[];
+begin
+    columns := (select array(select column_name::text
+                    from information_schema.columns
+                    where table_name = tableName));
+    return array_to_string(columns, ', ');
+end; $$
+--//

src/main/resources/db/changelog/050-rbac-base.sql

@@ -164,7 +164,7 @@ end; $$;
 
  */
 
-create type RbacRoleType as enum ('owner', 'admin', 'agent', 'tenant', 'guest');
+create type RbacRoleType as enum ('owner', 'admin', 'agent', 'tenant', 'guest', 'referrer');
 
 create table RbacRole
 (
@@ -373,10 +373,12 @@ create table RbacPermission
     uuid        uuid primary key references RbacReference (uuid) on delete cascade,
     objectUuid  uuid not null references RbacObject,
     op          RbacOp not null,
-    opTableName varchar(60),
+    opTableName varchar(60)
-    unique (objectUuid, op)
 );
 
+ALTER TABLE RbacPermission
+    ADD CONSTRAINT RbacPermission_uc UNIQUE NULLS NOT DISTINCT (objectUuid, op, opTableName);
+
 call create_journal('RbacPermission');
 
 create or replace function createPermission(forObjectUuid uuid, forOp RbacOp, forOpTableName text = null)
@@ -395,7 +397,10 @@ begin
         raise exception 'forOpTableName must only be specified for ops: [INSERT]'; -- currently no other
     end if;
 
-    permissionUuid = (select uuid from RbacPermission where objectUuid = forObjectUuid and op = forOp and opTableName = forOpTableName);
+    permissionUuid := (
+        select uuid from RbacPermission
+         where objectUuid = forObjectUuid
+           and op = forOp and opTableName is not distinct from forOpTableName);
     if (permissionUuid is null) then
         insert into RbacReference ("type")
             values ('RbacPermission')
@@ -466,8 +471,44 @@ select uuid
       and p.op = forOp
       and p.opTableName = forOpTableName
 $$;
+
+create or replace function getPermissionId(forObjectUuid uuid, forOp RbacOp, forOpTableName text = null)
+    returns uuid
+    stable -- leakproof
+    language plpgsql as $$
+declare
+    permissionUuid uuid;
+begin
+    select uuid into permissionUuid
+        from RbacPermission p
+        where p.objectUuid = forObjectUuid
+          and p.op = forOp
+          and forOpTableName is null or p.opTableName = forOpTableName;
+    assert permissionUuid is not null,
+        format('permission %s %s for object UUID %s cannot be found', forOp, forOpTableName, forObjectUuid);
+    return permissionUuid;
+end; $$;
 --//
 
+
+-- ============================================================================
+--changeset rbac-base-duplicate-role-grant-exception:1 endDelimiter:--//
+-- ----------------------------------------------------------------------------
+
+create or replace procedure raiseDuplicateRoleGrantException(subRoleId uuid, superRoleId uuid)
+    language plpgsql as $$
+declare
+    subRoleIdName text;
+    superRoleIdName text;
+begin
+    select roleIdName from rbacRole_ev where uuid=subRoleId into subRoleIdName;
+    select roleIdName from rbacRole_ev where uuid=superRoleId into superRoleIdName;
+    raise exception '[400] Duplicate role grant detected: role % (%) already granted to % (%)', subRoleId, subRoleIdName, superRoleId, superRoleIdName;
+end;
+$$;
+--//
+
+
 -- ============================================================================
 --changeset rbac-base-GRANTS:1 endDelimiter:--//
 -- ----------------------------------------------------------------------------
@@ -634,7 +675,7 @@ begin
     perform assertReferenceType('subRoleId (descendant)', subRoleId, 'RbacRole');
 
     if isGranted(subRoleId, superRoleId) then
-        raise exception '[400] Cyclic role grant detected between % and %', subRoleId, superRoleId;
+        call raiseDuplicateRoleGrantException(subRoleId, superRoleId);
     end if;
 
     insert
@@ -650,6 +691,11 @@ declare
     superRoleId uuid;
     subRoleId uuid;
 begin
+    -- FIXME: maybe separate method grantRoleToRoleIfNotNull(...)?
+    if superRole.objectUuid is null or subRole.objectuuid is null then
+        return;
+    end if;
+
     superRoleId := findRoleId(superRole);
     subRoleId := findRoleId(subRole);
 
@@ -657,7 +703,7 @@ begin
     perform assertReferenceType('subRoleId (descendant)', subRoleId, 'RbacRole');
 
     if isGranted(subRoleId, superRoleId) then
-        raise exception '[400] Cyclic role grant detected between % and %', subRoleId, superRoleId;
+        call raiseDuplicateRoleGrantException(subRoleId, superRoleId);
     end if;
 
     insert
@@ -672,6 +718,7 @@ declare
     superRoleId uuid;
     subRoleId uuid;
 begin
+    if ( superRoleId is null ) then return; end if;
     superRoleId := findRoleId(superRole);
     if ( subRoleId is null ) then return; end if;
     subRoleId := findRoleId(subRole);
@@ -680,7 +727,7 @@ begin
     perform assertReferenceType('subRoleId (descendant)', subRoleId, 'RbacRole');
 
     if isGranted(subRoleId, superRoleId) then
-        raise exception '[400] Cyclic role grant detected between % and %', subRoleId, superRoleId;
+        call raiseDuplicateRoleGrantException(subRoleId, superRoleId);
     end if;
 
     insert
@@ -704,11 +751,39 @@ begin
     if (isGranted(superRoleId, subRoleId)) then
         delete from RbacGrants where ascendantUuid = superRoleId and descendantUuid = subRoleId;
     else
-        raise exception 'cannot revoke role % (%) from % (% because it is not granted',
+        raise exception 'cannot revoke role % (%) from % (%) because it is not granted',
             subRole, subRoleId, superRole, superRoleId;
     end if;
 end; $$;
 
+create or replace procedure revokePermissionFromRole(permissionId UUID, superRole RbacRoleDescriptor)
+    language plpgsql as $$
+declare
+    superRoleId uuid;
+    permissionOp text;
+    objectTable text;
+    objectUuid uuid;
+begin
+    superRoleId := findRoleId(superRole);
+
+    perform assertReferenceType('superRoleId (ascendant)', superRoleId, 'RbacRole');
+    perform assertReferenceType('permission (descendant)', permissionId, 'RbacPermission');
+
+    if (isGranted(superRoleId, permissionId)) then
+        delete from RbacGrants where ascendantUuid = superRoleId and descendantUuid = permissionId;
+    else
+        select p.op, o.objectTable, o.uuid
+            from rbacGrants g
+                     join rbacPermission p on p.uuid=g.descendantUuid
+                     join rbacobject o on o.uuid=p.objectUuid
+            where g.uuid=permissionId
+            into permissionOp, objectTable, objectUuid;
+
+        raise exception 'cannot revoke permission % (% on %#% (%) from % (%)) because it is not granted',
+            permissionId, permissionOp, objectTable, objectUuid, permissionId, superRole, superRoleId;
+    end if;
+end; $$;
+
 -- ============================================================================
 --changeset rbac-base-QUERY-ACCESSIBLE-OBJECT-UUIDS:1 endDelimiter:--//
 -- ----------------------------------------------------------------------------

src/main/resources/db/changelog/054-rbac-context.sql

@@ -56,14 +56,17 @@ begin
             roleTypeToAssume = split_part(roleNameParts, '#', 3);
 
             objectUuidToAssume = findObjectUuidByIdName(objectTableToAssume, objectNameToAssume);
+            if objectUuidToAssume is null then
+                raise exception '[401] object % cannot be found in table %', objectNameToAssume, objectTableToAssume;
+            end if;
 
-            select uuid as roleuuidToAssume
+            select uuid
                 from RbacRole r
                 where r.objectUuid = objectUuidToAssume
                   and r.roleType = roleTypeToAssume
                 into roleUuidToAssume;
             if roleUuidToAssume is null then
-                raise exception '[403] role % not accessible for user %', roleName, currentSubjects();
+                raise exception '[403] role % does not exist or is not accessible for user %', roleName, currentUser();
             end if;
             if not isGranted(currentUserUuid, roleUuidToAssume) then
                 raise exception '[403] user % has no permission to assume role %', currentUser(), roleName;

src/main/resources/db/changelog/057-rbac-role-builder.sql

@@ -37,7 +37,7 @@ declare
     subRoleUuid             uuid;
     superRoleUuid           uuid;
     userUuid                uuid;
-    grantedByRoleUuid uuid;
+    userGrantsByRoleUuid    uuid;
 begin
     roleUuid := createRole(roleDescriptor);
 
@@ -58,14 +58,15 @@ begin
         end loop;
 
     if cardinality(userUuids) > 0 then
+        -- direct grants to users need a grantedByRole which can revoke the grant
         if grantedByRole is null then
-            grantedByRoleUuid := roleUuid;
+            userGrantsByRoleUuid := roleUuid; -- FIXME: or do we want to require an explicit userGrantsByRoleUuid?
         else
-            grantedByRoleUuid := getRoleId(grantedByRole);
+            userGrantsByRoleUuid := getRoleId(grantedByRole);
         end if;
         foreach userUuid in array userUuids
             loop
-                call grantRoleToUserUnchecked(grantedByRoleUuid, roleUuid, userUuid);
+                call grantRoleToUserUnchecked(userGrantsByRoleUuid, roleUuid, userUuid);
             end loop;
     end if;
 

src/main/resources/db/changelog/058-rbac-generators.sql

@@ -73,6 +73,7 @@ begin
             return roleDescriptor('%2$s', entity.uuid, 'tenant', assumed);
         end; $f$;
 
+        -- TODO: remove guest role
         create or replace function %1$sGuest(entity %2$s, assumed boolean = true)
             returns RbacRoleDescriptor
             language plpgsql
@@ -81,6 +82,14 @@ begin
             return roleDescriptor('%2$s', entity.uuid, 'guest', assumed);
         end; $f$;
 
+        create or replace function %1$sReferrer(entity %2$s)
+            returns RbacRoleDescriptor
+            language plpgsql
+            strict as $f$
+        begin
+            return roleDescriptor('%2$s', entity.uuid, 'referrer');
+        end; $f$;
+
         $sql$, prefix, targetTable);
     execute sql;
 end; $$;
@@ -148,12 +157,16 @@ end; $$;
 --changeset rbac-generators-RESTRICTED-VIEW:1 endDelimiter:--//
 -- ----------------------------------------------------------------------------
 
-create or replace procedure generateRbacRestrictedView(targetTable text, orderBy text, columnUpdates text = null)
+create or replace procedure generateRbacRestrictedView(targetTable text, orderBy text, columnUpdates text = null, columnNames text = '*')
     language plpgsql as $$
 declare
     sql text;
+    newColumns text;
 begin
     targetTable := lower(targetTable);
+    if columnNames = '*' then
+        columnNames := columnsNames(targetTable);
+    end if;
 
     /*
         Creates a restricted view based on the 'SELECT' permission of the current subject.
@@ -175,6 +188,7 @@ begin
     /**
         Instead of insert trigger function for the restricted view.
      */
+    newColumns := 'new.' || replace(columnNames, ',', ', new.');
     sql := format($sql$
     create or replace function %1$sInsert()
         returns trigger
@@ -183,12 +197,12 @@ begin
         newTargetRow %1$s;
     begin
         insert
-                into %1$s
+            into %1$s (%2$s)
-                values (new.*)
+            values (%3$s)
             returning * into newTargetRow;
         return newTargetRow;
     end; $f$;
-        $sql$, targetTable);
+    $sql$, targetTable, columnNames, newColumns);
     execute sql;
 
     /*

src/main/resources/db/changelog/080-rbac-global.sql

@@ -121,6 +121,29 @@ begin transaction;
     call defineContext('creating global admin role', null, null, null);
     select createRole(globalAdmin());
 commit;
+--//
+
+
+-- ============================================================================
+--changeset rbac-global-GUEST-ROLE:1 endDelimiter:--//
+-- ----------------------------------------------------------------------------
+/*
+    A global guest role.
+ */
+create or replace function globalGuest(assumed boolean = true)
+    returns RbacRoleDescriptor
+    returns null on null input
+    stable -- leakproof
+    language sql as $$
+select 'global', (select uuid from RbacObject where objectTable = 'global'), 'guest'::RbacRoleType, assumed;
+$$;
+
+begin transaction;
+    call defineContext('creating global guest role', null, null, null);
+    select createRole(globalGuest());
+commit;
+--//
+
 
 -- ============================================================================
 --changeset rbac-global-ADMIN-USERS:1 context:dev,tc endDelimiter:--//

src/main/resources/db/changelog/133-test-domain-rbac.sql

@@ -38,8 +38,6 @@ begin
     SELECT * FROM test_package p
         WHERE p.uuid= NEW.packageUuid
         INTO newPackage;
-    assert newPackage.uuid is not null, format('newPackage must not be null for NEW.packageUuid = %s', NEW.packageUuid);
-
 
     perform createRoleWithGrants(
         testDomainOwner(NEW),
@@ -91,41 +89,12 @@ create or replace procedure updateRbacRulesForTestDomain(
     NEW test_domain
 )
     language plpgsql as $$
-
-declare
-    oldPackage test_package;
-    newPackage test_package;
-
 begin
-    call enterTriggerForObjectUuid(NEW.uuid);
-
-    SELECT * FROM test_package p
-        WHERE p.uuid= OLD.packageUuid
-        INTO oldPackage;
-    assert oldPackage.uuid is not null, format('oldPackage must not be null for OLD.packageUuid = %s', OLD.packageUuid);
-
-    SELECT * FROM test_package p
-        WHERE p.uuid= NEW.packageUuid
-        INTO newPackage;
-    assert newPackage.uuid is not null, format('newPackage must not be null for NEW.packageUuid = %s', NEW.packageUuid);
-
-
-    if NEW.packageUuid <> OLD.packageUuid then
-
-        call revokePermissionFromRole(getPermissionId(OLD.uuid, 'INSERT'), testPackageAdmin(oldPackage));
-
-        call revokeRoleFromRole(testDomainOwner(OLD), testPackageAdmin(oldPackage));
-        call grantRoleToRole(testDomainOwner(NEW), testPackageAdmin(newPackage));
-
-        call revokeRoleFromRole(testPackageTenant(oldPackage), testDomainOwner(OLD));
-        call grantRoleToRole(testPackageTenant(newPackage), testDomainOwner(NEW));
-
-        call revokeRoleFromRole(testPackageTenant(oldPackage), testDomainAdmin(OLD));
-        call grantRoleToRole(testPackageTenant(newPackage), testDomainAdmin(NEW));
 
+    if NEW.packageUuid is distinct from OLD.packageUuid then
+        delete from rbacgrants g where g.grantedbytriggerof = OLD.uuid;
+        call buildRbacSystemForTestDomain(NEW);
     end if;
-
-    call leaveTriggerForObjectUuid(NEW.uuid);
 end; $$;
 
 /*

src/main/resources/db/changelog/223-hs-office-relation-rbac-generated.sql

@@ -38,14 +38,10 @@ begin
     call enterTriggerForObjectUuid(NEW.uuid);
 
     select * from hs_office_person as p where p.uuid = NEW.holderUuid    INTO newHolderPerson;
-    assert newHolderPerson.uuid is not null, format('newHolderPerson must not be null for NEW.holderUuid = %s', NEW.holderUuid);
 
     select * from hs_office_person as p where p.uuid = NEW.anchorUuid    INTO newAnchorPerson;
-    assert newAnchorPerson.uuid is not null, format('newAnchorPerson must not be null for NEW.anchorUuid = %s', NEW.anchorUuid);
 
     select * from hs_office_contact as c where c.uuid = NEW.contactUuid    INTO newContact;
-    assert newContact.uuid is not null, format('newContact must not be null for NEW.contactUuid = %s', NEW.contactUuid);
-
 
     perform createRoleWithGrants(
         hsOfficeRelationOwner(NEW),
@@ -73,13 +69,13 @@ begin
         hsOfficeRelationTenant(NEW),
             permissions => array['SELECT'],
             incomingSuperRoles => array[
-            	hsOfficeRelationAgent(NEW),
             	hsOfficeContactAdmin(newContact),
+            	hsOfficeRelationAgent(NEW),
             	hsOfficePersonAdmin(newHolderPerson)],
             outgoingSubRoles => array[
-            	hsOfficePersonReferrer(newHolderPerson),
             	hsOfficeContactReferrer(newContact),
-            	hsOfficePersonReferrer(newAnchorPerson)]
+            	hsOfficePersonReferrer(newAnchorPerson),
+            	hsOfficePersonReferrer(newHolderPerson)]
     );
 
     call leaveTriggerForObjectUuid(NEW.uuid);
@@ -118,48 +114,12 @@ create or replace procedure updateRbacRulesForHsOfficeRelation(
     NEW hs_office_relation
 )
     language plpgsql as $$
-
-declare
-    oldHolderPerson hs_office_person;
-    newHolderPerson hs_office_person;
-    oldAnchorPerson hs_office_person;
-    newAnchorPerson hs_office_person;
-    oldContact hs_office_contact;
-    newContact hs_office_contact;
-
 begin
-    call enterTriggerForObjectUuid(NEW.uuid);
-
-    select * from hs_office_person as p where p.uuid = OLD.holderUuid    INTO oldHolderPerson;
-    assert oldHolderPerson.uuid is not null, format('oldHolderPerson must not be null for OLD.holderUuid = %s', OLD.holderUuid);
-
-    select * from hs_office_person as p where p.uuid = NEW.holderUuid    INTO newHolderPerson;
-    assert newHolderPerson.uuid is not null, format('newHolderPerson must not be null for NEW.holderUuid = %s', NEW.holderUuid);
-
-    select * from hs_office_person as p where p.uuid = OLD.anchorUuid    INTO oldAnchorPerson;
-    assert oldAnchorPerson.uuid is not null, format('oldAnchorPerson must not be null for OLD.anchorUuid = %s', OLD.anchorUuid);
-
-    select * from hs_office_person as p where p.uuid = NEW.anchorUuid    INTO newAnchorPerson;
-    assert newAnchorPerson.uuid is not null, format('newAnchorPerson must not be null for NEW.anchorUuid = %s', NEW.anchorUuid);
-
-    select * from hs_office_contact as c where c.uuid = OLD.contactUuid    INTO oldContact;
-    assert oldContact.uuid is not null, format('oldContact must not be null for OLD.contactUuid = %s', OLD.contactUuid);
-
-    select * from hs_office_contact as c where c.uuid = NEW.contactUuid    INTO newContact;
-    assert newContact.uuid is not null, format('newContact must not be null for NEW.contactUuid = %s', NEW.contactUuid);
-
-
-    if NEW.contactUuid <> OLD.contactUuid then
-
-        call revokeRoleFromRole(hsOfficeRelationTenant(OLD), hsOfficeContactAdmin(oldContact));
-        call grantRoleToRole(hsOfficeRelationTenant(NEW), hsOfficeContactAdmin(newContact));
-
-        call revokeRoleFromRole(hsOfficeContactReferrer(oldContact), hsOfficeRelationTenant(OLD));
-        call grantRoleToRole(hsOfficeContactReferrer(newContact), hsOfficeRelationTenant(NEW));
 
+    if NEW.contactUuid is distinct from OLD.contactUuid then
+        delete from rbacgrants g where g.grantedbytriggerof = OLD.uuid;
+        call buildRbacSystemForHsOfficeRelation(NEW);
     end if;
-
-    call leaveTriggerForObjectUuid(NEW.uuid);
 end; $$;
 
 /*

src/main/resources/db/changelog/253-hs-office-sepamandate-rbac-generated.sql

@@ -57,8 +57,8 @@ begin
         hsOfficeSepaMandateAgent(NEW),
             incomingSuperRoles => array[hsOfficeSepaMandateAdmin(NEW)],
             outgoingSubRoles => array[
-            	hsOfficeBankAccountReferrer(newBankAccount),
+            	hsOfficeRelationAgent(newDebitorRel),
-            	hsOfficeRelationAgent(newDebitorRel)]
+            	hsOfficeBankAccountReferrer(newBankAccount)]
     );
 
     perform createRoleWithGrants(

src/main/resources/db/changelog/273-hs-office-debitor-rbac-generated.sql

@@ -41,7 +41,6 @@ begin
          FROM hs_office_relation AS partnerRel
          WHERE ${debitorRel}.anchorUuid = partnerRel.holderUuid
         INTO newPartnerRel;
-    assert newPartnerRel.uuid is not null, format('newPartnerRel must not be null for NEW.partnerRelUuid = %s', NEW.partnerRelUuid);
 
     SELECT *
         FROM hs_office_relation AS r
@@ -53,7 +52,6 @@ begin
         FROM hs_office_relation AS r
         WHERE r.type = 'DEBITOR' AND r.holderUuid = NEW.debitorRelUuid
         INTO newRefundBankAccount;
-    assert newRefundBankAccount.uuid is not null, format('newRefundBankAccount must not be null for NEW.refundBankAccountUuid = %s', NEW.refundBankAccountUuid);
 
     call grantRoleToRole(hsOfficeBankAccountReferrer(newRefundBankAccount), hsOfficeRelationAgent(newDebitorRel));
     call grantRoleToRole(hsOfficeRelationAdmin(newDebitorRel), hsOfficeRelationAdmin(newPartnerRel));
@@ -101,66 +99,12 @@ create or replace procedure updateRbacRulesForHsOfficeDebitor(
     NEW hs_office_debitor
 )
     language plpgsql as $$
-
-declare
-    oldPartnerRel hs_office_relation;
-    newPartnerRel hs_office_relation;
-    oldDebitorRel hs_office_relation;
-    newDebitorRel hs_office_relation;
-    oldRefundBankAccount hs_office_bankaccount;
-    newRefundBankAccount hs_office_bankaccount;
-
 begin
-    call enterTriggerForObjectUuid(NEW.uuid);
-
-    SELECT *
-         FROM hs_office_relation AS partnerRel
-         WHERE ${debitorRel}.anchorUuid = partnerRel.holderUuid
-        INTO oldPartnerRel;
-    assert oldPartnerRel.uuid is not null, format('oldPartnerRel must not be null for OLD.partnerRelUuid = %s', OLD.partnerRelUuid);
-
-    SELECT *
-         FROM hs_office_relation AS partnerRel
-         WHERE ${debitorRel}.anchorUuid = partnerRel.holderUuid
-        INTO newPartnerRel;
-    assert newPartnerRel.uuid is not null, format('newPartnerRel must not be null for NEW.partnerRelUuid = %s', NEW.partnerRelUuid);
-
-    SELECT *
-        FROM hs_office_relation AS r
-        WHERE r.type = 'DEBITOR' AND r.holderUuid = OLD.debitorRelUuid
-        INTO oldDebitorRel;
-    assert oldDebitorRel.uuid is not null, format('oldDebitorRel must not be null for OLD.debitorRelUuid = %s', OLD.debitorRelUuid);
-
-    SELECT *
-        FROM hs_office_relation AS r
-        WHERE r.type = 'DEBITOR' AND r.holderUuid = NEW.debitorRelUuid
-        INTO newDebitorRel;
-    assert newDebitorRel.uuid is not null, format('newDebitorRel must not be null for NEW.debitorRelUuid = %s', NEW.debitorRelUuid);
-
-    SELECT *
-        FROM hs_office_relation AS r
-        WHERE r.type = 'DEBITOR' AND r.holderUuid = OLD.debitorRelUuid
-        INTO oldRefundBankAccount;
-    assert oldRefundBankAccount.uuid is not null, format('oldRefundBankAccount must not be null for OLD.refundBankAccountUuid = %s', OLD.refundBankAccountUuid);
-
-    SELECT *
-        FROM hs_office_relation AS r
-        WHERE r.type = 'DEBITOR' AND r.holderUuid = NEW.debitorRelUuid
-        INTO newRefundBankAccount;
-    assert newRefundBankAccount.uuid is not null, format('newRefundBankAccount must not be null for NEW.refundBankAccountUuid = %s', NEW.refundBankAccountUuid);
-
-
-    if NEW.refundBankAccountUuid <> OLD.refundBankAccountUuid then
-
-        call revokeRoleFromRole(hsOfficeRelationAgent(oldDebitorRel), hsOfficeBankAccountAdmin(oldRefundBankAccount));
-        call grantRoleToRole(hsOfficeRelationAgent(newDebitorRel), hsOfficeBankAccountAdmin(newRefundBankAccount));
-
-        call revokeRoleFromRole(hsOfficeBankAccountReferrer(oldRefundBankAccount), hsOfficeRelationAgent(oldDebitorRel));
-        call grantRoleToRole(hsOfficeBankAccountReferrer(newRefundBankAccount), hsOfficeRelationAgent(newDebitorRel));
 
+    if NEW.refundBankAccountUuid is distinct from OLD.refundBankAccountUuid then
+        delete from rbacgrants g where g.grantedbytriggerof = OLD.uuid;
+        call buildRbacSystemForHsOfficeDebitor(NEW);
     end if;
-
-    call leaveTriggerForObjectUuid(NEW.uuid);
 end; $$;
 
 /*

src/main/resources/db/changelog/db.changelog-master.yaml

@@ -11,6 +11,8 @@ databaseChangeLog:
         file: db/changelog/005-uuid-ossp-extension.sql
     - include:
         file: db/changelog/006-numeric-hash-functions.sql
+    - include:
+        file: db/changelog/007-table-columns.sql
     - include:
         file: db/changelog/009-check-environment.sql
     - include: