From f67e5e2e2258a79e0032de4dd2dc6c03b9d055d7 Mon Sep 17 00:00:00 2001
From: Elias Kuiter <info@elias-kuiter.de>
Date: Tue, 19 Nov 2019 11:32:34 +0100
Subject: [PATCH] Fixed import bug where mandatory features are considered
 optional

---
 .../java/de/ovgu/spldev/varied/kernel/FeatureModelFormat.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/server/src/main/java/de/ovgu/spldev/varied/kernel/FeatureModelFormat.java b/server/src/main/java/de/ovgu/spldev/varied/kernel/FeatureModelFormat.java
index ccdb1664..f7c3a6cb 100644
--- a/server/src/main/java/de/ovgu/spldev/varied/kernel/FeatureModelFormat.java
+++ b/server/src/main/java/de/ovgu/spldev/varied/kernel/FeatureModelFormat.java
@@ -32,7 +32,7 @@ else if (feature.getStructure().isAlternative())
 
             featureMap.put(Kernel.keyword("parent-ID"),
                     feature.getStructure().getParent() == null ? null : feature.getStructure().getParent().getFeature().getName());
-            featureMap.put(Kernel.keyword("optional?"), feature.getStructure().isMandatory());
+            featureMap.put(Kernel.keyword("optional?"), !feature.getStructure().isMandatory());
             featureMap.put(Kernel.keyword("name"), de.ovgu.spldev.varied.util.FeatureUtils.getFeatureName(feature));
             featureMap.put(Kernel.keyword("hidden?"), feature.getStructure().isHidden());
             featureMap.put(Kernel.keyword("abstract?"), feature.getStructure().isAbstract());