Index tier history sources lazily

2026-10-25 23:13:00 +00:00
parent 1dd94a3cc6
commit 75e209eb3b
3 changed files with 26 additions and 14 deletions
--- a/internal/engine/sequence_history_projection.go
+++ b/internal/engine/sequence_history_projection.go
@@ -16,6 +16,7 @@ func projectTierHistoryApplications(applications []historyApplication, operation
 	projected := cloneHistoryApplications(applications)
 	for index, original := range applications {
 		application := &projected[index]
+		var originalLookup *documentLookup
 		if path, found := projectSequenceOperationPath(original.path, projections); found {
 			application.path = path
 		}
@@ -25,7 +26,10 @@ func projectTierHistoryApplications(applications []historyApplication, operation
 			if !active || operation.mode != sequenceHistoryMapped {
 				continue
 			}
-			value, found := documentAtPath(original.value, source.path)
+			if originalLookup == nil {
+				originalLookup = buildDocumentLookup(original.value)
+			}
+			value, found := documentAtPathWithLookup(original.value, source.path, originalLookup)
 			if !found || value.Kind != document.Sequence {
 				continue
 			}