From 98d58d8e60a1ab49d9790e31510255083eb7effd Mon Sep 17 00:00:00 2001
From: sascha <skuehl1972@gmail.com>
Date: Wed, 27 May 2026 16:10:03 +0200
Subject: [PATCH] small fixes

---
 include/matador/object/observer.hpp         | 4 ++--
 include/matador/object/pk_field_locator.hpp | 6 ++++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/include/matador/object/observer.hpp b/include/matador/object/observer.hpp
index feb1695..e21ba5b 100644
--- a/include/matador/object/observer.hpp
+++ b/include/matador/object/observer.hpp
@@ -113,8 +113,8 @@ class null_observer : public observer<Type> {
 public:
   template < class OtherType >
   explicit null_observer(const null_observer<OtherType> *) {}
-  void on_attach(repository_node &, Type &) override {}
-  void on_detach(repository_node &, Type &) override {}
+  void on_attach(const repository_node &, const Type &) const override {}
+  void on_detach(const repository_node &, const Type &) const override {}
   void on_insert(Type &) override {}
   void on_update(Type &) override {}
   void on_delete(Type &) override {}
diff --git a/include/matador/object/pk_field_locator.hpp b/include/matador/object/pk_field_locator.hpp
index ad09ef6..c5132c2 100644
--- a/include/matador/object/pk_field_locator.hpp
+++ b/include/matador/object/pk_field_locator.hpp
@@ -88,9 +88,11 @@ struct pk_field_locator {
       desc.kind = pk_kind::uuid;
 
       desc.is_known_at = [](void *obj, const std::size_t off) -> bool {
-        auto *p = reinterpret_cast<uuid16 *>(static_cast<std::uint8_t *>(obj) + off);
+        const auto *p = reinterpret_cast<uuid16 *>(static_cast<std::uint8_t *>(obj) + off);
         // “unknown” = all zeros
-        for (auto b: *p) { if (b != 0) return true; }
+        for (const auto b: *p) {
+          if (b != 0) return true;
+        }
         return false;
       };