Warehouse deleted from db

src/engine/db/handlers/dbWarehouseHandler.java

@@ -84,6 +84,18 @@ public class dbWarehouseHandler extends dbHandlerBase {
         return transactionsList;
     }
 
+    public void DELETE_WAREHOUSE(Warehouse warehouse) {
+        try (Connection connection = DbManager.getConnection();
+             PreparedStatement preparedStatement = connection.prepareStatement("DELETE FROM ``dyn_warehouse` WHERE `cityUUID` = ?;")) {
+            preparedStatement.setInt(1, warehouse.city.getObjectUUID());
+            preparedStatement.executeUpdate();
+
+        } catch (SQLException e) {
+            Logger.error(e);
+        }
+
+    }
+
     public boolean UPDATE_WAREHOUSE(Warehouse warehouse) {
 
         JSONObject warehouseJSON = new JSONObject();

src/engine/objects/Building.java

@@ -425,9 +425,10 @@ public class Building extends AbstractWorldObject {
 
         // Special handling of warehouses
 
-        if (blueprint.getBuildingGroup() == BuildingGroup.WAREHOUSE)
+        if (blueprint.getBuildingGroup() == BuildingGroup.WAREHOUSE) {
-            if (city != null)
+            DbManager.WarehouseQueries.DELETE_WAREHOUSE(city.warehouse);
-                city.setWarehouseBuildingID(0);
+            city.warehouse = null;
+        }
 
         // Special handling of destroyed Spires