Propagate logger via property setters instead of per-call in InternalEnforce

Co-authored-by: sagilio <42855245+sagilio@users.noreply.github.com>

Author: Copilot

Casbin/Enforcer.Internal.cs

@@ -72,12 +72,6 @@ private bool InternalEnforce<TRequest, TPolicy>(in EnforceContext context, in TR
     {
         EnforceSession session = new EnforceSession();
         IExpressionHandler expressionHandler = Model.ExpressionHandler;
-#if !NET452
-        if (expressionHandler is ExpressionHandler exprHandler)
-        {
-            exprHandler.Logger = Logger;
-        }
-#endif
         PolicyScanner<TRequest> scanner = context.View.PolicyAssertion.Scan(in requestValues);
 
         EffectChain effectChain = new();

Casbin/Enforcer.cs

@@ -2,6 +2,7 @@
 using System.Threading.Tasks;
 using Casbin.Caching;
 using Casbin.Effect;
+using Casbin.Evaluation;
 using Casbin.Model;
 using Casbin.Persist;
 using Casbin.Persist.Adapter.File;
@@ -84,7 +85,22 @@ public IReadOnlyWatcher Watcher
             set => Model.WatcherHolder.Watcher = value;
         }
 
-        public IModel Model { get; set; }
+        private IModel _model;
+
+        public IModel Model
+        {
+            get => _model;
+            set
+            {
+                _model = value;
+#if !NET452
+                if (value?.ExpressionHandler is ExpressionHandler exprHandler)
+                {
+                    exprHandler.Logger = _logger;
+                }
+#endif
+            }
+        }
 
         public IReadOnlyAdapter Adapter
         {
@@ -99,7 +115,20 @@ public IEnforceCache EnforceCache
         }
 
 #if !NET452
-        public ILogger Logger { get; set; }
+        private ILogger _logger;
+
+        public ILogger Logger
+        {
+            get => _logger;
+            set
+            {
+                _logger = value;
+                if (_model?.ExpressionHandler is ExpressionHandler exprHandler)
+                {
+                    exprHandler.Logger = value;
+                }
+            }
+        }
 #endif
 
         #endregion