[CHANGE] Updated queries, exception handler, role repository.

DotBased.AspNet.Authority.EFCore/Repositories/RepositoryBase.cs

@@ -0,0 +1,19 @@
+namespace DotBased.AspNet.Authority.EFCore.Repositories;
+
+public abstract class RepositoryBase
+{
+    protected Result<T> HandleExceptionResult<T>(string message, Exception ex) => new(HandleException(message, ex));
+
+    protected ListResult<T> HandleExceptionListResult<T>(string message, Exception ex) =>
+        new(HandleException(message, ex));
+
+    protected Result HandleException(string message, Exception ex)
+    {
+        if (ex is OperationCanceledException oce)
+        {
+            return Result.Failed("Operation cancelled.", oce);
+        }
+
+        return Result.Failed(message, ex);
+    }
+}