fix: eval_batch with callback

mlr-org · Jun 18, 2024 · f90bf58 · f90bf58
1 parent 7d7a18c
commit f90bf58
Showing 1 changed file with 1 addition and 0 deletions.
diff --git 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)