src/main/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemController.java

@@ -5,6 +5,7 @@ import net.hostsharing.hsadminng.hs.booking.generated.api.v1.api.HsBookingItemsA
 import net.hostsharing.hsadminng.hs.booking.generated.api.v1.model.HsBookingItemInsertResource;
 import net.hostsharing.hsadminng.hs.booking.generated.api.v1.model.HsBookingItemPatchResource;
 import net.hostsharing.hsadminng.hs.booking.generated.api.v1.model.HsBookingItemResource;
+import net.hostsharing.hsadminng.mapper.KeyValueMap;
 import net.hostsharing.hsadminng.mapper.Mapper;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.ResponseEntity;
@@ -16,7 +17,6 @@ import java.util.List;
 import java.util.UUID;
 import java.util.function.BiConsumer;
 
-import static net.hostsharing.hsadminng.mapper.EntityPatcher.castToKeyValueMap;
 import static net.hostsharing.hsadminng.mapper.PostgresDateRange.toPostgresDateRange;
 
 @RestController
@@ -126,6 +126,6 @@ public class HsBookingItemController implements HsBookingItemsApi {
     @SuppressWarnings("unchecked")
     final BiConsumer<HsBookingItemInsertResource, HsBookingItemEntity> RESOURCE_TO_ENTITY_POSTMAPPER = (resource, entity) -> {
         entity.setValidity(toPostgresDateRange(resource.getValidFrom(), resource.getValidTo()));
-        entity.putResources(castToKeyValueMap(resource.getResources()));
+        entity.putResources(KeyValueMap.from(resource.getResources()));
     };
 }

src/main/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemEntityPatcher.java

@@ -2,11 +2,11 @@ package net.hostsharing.hsadminng.hs.booking.item;
 
 import net.hostsharing.hsadminng.hs.booking.generated.api.v1.model.HsBookingItemPatchResource;
 import net.hostsharing.hsadminng.mapper.EntityPatcher;
+import net.hostsharing.hsadminng.mapper.KeyValueMap;
 import net.hostsharing.hsadminng.mapper.OptionalFromJson;
 
 import java.util.Optional;
 
-import static net.hostsharing.hsadminng.mapper.EntityPatcher.castToKeyValueMap;
 
 public class HsBookingItemEntityPatcher implements EntityPatcher<HsBookingItemPatchResource> {
 
@@ -21,7 +21,7 @@ public class HsBookingItemEntityPatcher implements EntityPatcher<HsBookingItemPa
         OptionalFromJson.of(resource.getCaption())
                 .ifPresent(entity::setCaption);
         Optional.ofNullable(resource.getResources())
-                .ifPresent(r -> entity.getResources().patch(castToKeyValueMap(resource.getResources())));
+                .ifPresent(r -> entity.getResources().patch(KeyValueMap.from(resource.getResources())));
         OptionalFromJson.of(resource.getValidFrom())
                 .ifPresent(entity::setValidFrom);
         OptionalFromJson.of(resource.getValidTo())

src/main/java/net/hostsharing/hsadminng/mapper/EntityPatcher.java

@@ -1,17 +1,6 @@
 package net.hostsharing.hsadminng.mapper;
 
-import java.util.Map;
-
 public interface EntityPatcher<R> {
 
     void apply(R resource);
-
-    @SuppressWarnings("unchecked")
-    public static Map<String, Object> castToKeyValueMap(final Object obj) {
-        if (obj instanceof Map<?, ?>) {
-            return (Map<String, Object>) obj;
-        }
-        throw new ClassCastException("Map expected, but got: " + obj);
-    }
-
 }

src/main/java/net/hostsharing/hsadminng/mapper/KeyValueMap.java

@@ -0,0 +1,14 @@
+package net.hostsharing.hsadminng.mapper;
+
+import java.util.Map;
+
+public class KeyValueMap {
+
+    @SuppressWarnings("unchecked")
+    public static Map<String, Object> from(final Object obj) {
+        if (obj instanceof Map<?, ?>) {
+            return (Map<String, Object>) obj;
+        }
+        throw new ClassCastException("Map expected, but got: " + obj);
+    }
+}

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

@@ -3,6 +3,7 @@ package net.hostsharing.hsadminng.hs.booking.item;
 import io.hypersistence.utils.hibernate.type.range.Range;
 import net.hostsharing.hsadminng.hs.booking.generated.api.v1.model.HsBookingItemPatchResource;
 import net.hostsharing.hsadminng.hs.office.debitor.HsOfficeDebitorEntity;
+import net.hostsharing.hsadminng.mapper.KeyValueMap;
 import net.hostsharing.hsadminng.rbac.test.PatchUnitTestBase;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.TestInstance;
@@ -17,7 +18,6 @@ import java.util.UUID;
 import java.util.stream.Stream;
 
 import static net.hostsharing.hsadminng.hs.office.debitor.TestHsOfficeDebitor.TEST_DEBITOR;
-import static net.hostsharing.hsadminng.mapper.EntityPatcher.castToKeyValueMap;
 import static net.hostsharing.hsadminng.mapper.PatchMap.entry;
 import static net.hostsharing.hsadminng.mapper.PatchMap.patchMap;
 import static org.junit.jupiter.api.TestInstance.Lifecycle.PER_CLASS;
@@ -72,7 +72,7 @@ class HsBookingItemEntityPatcherUnitTest extends PatchUnitTestBase<
         final var entity = new HsBookingItemEntity();
         entity.setUuid(INITIAL_BOOKING_ITEM_UUID);
         entity.setDebitor(TEST_DEBITOR);
-        entity.getResources().putAll(castToKeyValueMap(INITIAL_RESOURCES));
+        entity.getResources().putAll(KeyValueMap.from(INITIAL_RESOURCES));
         entity.setCaption(INITIAL_CAPTION);
         entity.setValidity(Range.closedInfinite(GIVEN_VALID_FROM));
         return entity;