From 94b9bfd7c6b67ccf4a23e8b79bcc34ea15f35eaa Mon Sep 17 00:00:00 2001
From: Chinmay Garde <chinmaygarde@google.com>
Date: Sun, 12 Dec 2021 13:54:46 -0800
Subject: [PATCH] Add error message for incorrect member lookup.

---
 impeller/archivist/archive_class_registration.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/impeller/archivist/archive_class_registration.cc b/impeller/archivist/archive_class_registration.cc
index 0a715eabaf8b4..335f3acd0e86e 100644
--- a/impeller/archivist/archive_class_registration.cc
+++ b/impeller/archivist/archive_class_registration.cc
@@ -8,6 +8,7 @@
 
 #include "impeller/archivist/archive_database.h"
 #include "impeller/archivist/archive_statement.h"
+#include "impeller/base/validation.h"
 
 namespace impeller {
 
@@ -39,6 +40,9 @@ std::optional<size_t> ArchiveClassRegistration::FindColumnIndex(
     const std::string& member) const {
   auto found = column_map_.find(member);
   if (found == column_map_.end()) {
+    VALIDATION_LOG << "No member named '" << member << "' in class '"
+                   << definition_.table_name
+                   << "'. Did you forget to register it?";
     return std::nullopt;
   }
   return found->second;