From ba1eca70b9e4959efeef27bd005fa50606ba4cc0 Mon Sep 17 00:00:00 2001
From: Kai Kewley <kaikewley@gmail.com>
Date: Wed, 12 May 2021 10:59:56 +0100
Subject: [PATCH] PIP-62 Synchronise MRCM ungrouped roles map to avoid US
 Edition error.

---
 .../org/snomed/otf/owltoolkit/taxonomy/SnomedTaxonomy.java    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/java/org/snomed/otf/owltoolkit/taxonomy/SnomedTaxonomy.java b/src/main/java/org/snomed/otf/owltoolkit/taxonomy/SnomedTaxonomy.java
index 5dcc229..c3763b1 100644
--- a/src/main/java/org/snomed/otf/owltoolkit/taxonomy/SnomedTaxonomy.java
+++ b/src/main/java/org/snomed/otf/owltoolkit/taxonomy/SnomedTaxonomy.java
@@ -50,7 +50,9 @@ public class SnomedTaxonomy {
 	private Map<String, OWLAxiom> axiomsById = new ConcurrentHashMap<>();
 
 	private Map<Long, Set<Long>> inferredSubTypesMap = new Long2ObjectOpenHashMap<>();
-	private Map<Long, Set<Long>> ungroupedRolesByContentType = new HashMap<>();
+
+	// Ungrouped roles map must be synchronised because international and extension refset members are loaded in parallel. The US Edition package contains the full MRCM.
+	private Map<Long, Set<Long>> ungroupedRolesByContentType = Long2ObjectMaps.synchronize(new Long2ObjectOpenHashMap<>());
 	private Set<Long> inactivatedConcepts = new LongOpenHashSet();
 	private Map<Long, Set<Description>> conceptDescriptionMap = Long2ObjectMaps.synchronize(new Long2ObjectOpenHashMap<>());
 	private Map<Long, Description> descriptionMap = Long2ObjectMaps.synchronize(new Long2ObjectOpenHashMap<>());