From f90bf58156d815a1dba122bee7994a4bcbfd0940 Mon Sep 17 00:00:00 2001
From: be-marc <marcbecker@posteo.de>
Date: Tue, 18 Jun 2024 08:21:13 +0200
Subject: [PATCH] fix: eval_batch with callback

---
 R/OptimInstanceBatch.R | 1 +
 1 file changed, 1 insertion(+)

diff --git a/R/OptimInstanceBatch.R b/R/OptimInstanceBatch.R
index 6ae3801e..38a17cad 100644
--- a/R/OptimInstanceBatch.R
+++ b/R/OptimInstanceBatch.R
@@ -70,6 +70,7 @@ OptimInstanceBatch = R6Class("OptimInstanceBatch",
     #' columns for extra information.
     eval_batch = function(xdt) {
       private$.xdt = xdt
+      if (is.null(self$objective$context)) private$.initialize_context(NULL)
       call_back("on_optimizer_before_eval", self$objective$callbacks, self$objective$context)
       # update progressor
       if (!is.null(self$progressor)) self$progressor$update(self$terminator, self$archive)