From 1484fc05c3373fff16e0d6290afaf6853ca6f5f2 Mon Sep 17 00:00:00 2001
From: Valery Kharseko <vharseko@3a-systems.ru>
Date: Mon, 06 May 2024 14:32:39 +0000
Subject: [PATCH] [#331] Allow downgrade version without upgrade task (#333)

---
 opendj-server-legacy/src/main/java/org/opends/server/tools/upgrade/Upgrade.java |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/opendj-server-legacy/src/main/java/org/opends/server/tools/upgrade/Upgrade.java b/opendj-server-legacy/src/main/java/org/opends/server/tools/upgrade/Upgrade.java
index 24e5a52..132d3bf 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/tools/upgrade/Upgrade.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/tools/upgrade/Upgrade.java
@@ -726,10 +726,13 @@
   private static List<UpgradeTask> getUpgradeTasks(final BuildVersion fromVersion, final BuildVersion toVersion)
   {
     final List<UpgradeTask> tasks = new LinkedList<>();
-    for (final List<UpgradeTask> subList : TASKS.subMap(fromVersion, false,
-        toVersion, true).values())
-    {
-      tasks.addAll(subList);
+    try {
+        for (final List<UpgradeTask> subList : TASKS.subMap(fromVersion, false,
+                toVersion, true).values()) {
+            tasks.addAll(subList);
+        }
+    }catch (IllegalArgumentException e) {
+        logger.warn(LocalizableMessage.raw("Downgrade: "+e.getMessage()));
     }
     tasks.addAll(MANDATORY_TASKS);
     return tasks;

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