From 0e3add215e53d9bfd832ff4a1aa180d4f8eec5ad Mon Sep 17 00:00:00 2001
From: "Charles P. Wright" <charleswright@deephaven.io>
Date: Tue, 5 Dec 2023 14:38:25 -0500
Subject: [PATCH] Fix existingOrBuild.

---
 .../deephaven/engine/updategraph/impl/BaseUpdateGraph.java  | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/engine/table/src/main/java/io/deephaven/engine/updategraph/impl/BaseUpdateGraph.java b/engine/table/src/main/java/io/deephaven/engine/updategraph/impl/BaseUpdateGraph.java
index a7d0aa0974f..d4cb74e7cfd 100644
--- a/engine/table/src/main/java/io/deephaven/engine/updategraph/impl/BaseUpdateGraph.java
+++ b/engine/table/src/main/java/io/deephaven/engine/updategraph/impl/BaseUpdateGraph.java
@@ -1066,6 +1066,10 @@ public static <T extends UpdateGraph> T buildOrThrow(final String name, final Su
      * @return the UpdateGraph
      */
     public static <T extends UpdateGraph> T existingOrBuild(final String name, Supplier<T> construct) {
-        return INSTANCES.putIfAbsent(name, construct.get()).cast();
+        return INSTANCES.putIfAbsent(name, (nameToInsert) -> {
+            final T newGraph = construct.get();
+            Assert.equals(newGraph.getName(), "newGraph.getName()", nameToInsert, "name");
+            return newGraph;
+        }).cast();
     }
 }