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-rw-r--r--id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/utils/KeyValueUtils.java7
1 files changed, 6 insertions, 1 deletions
diff --git a/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/utils/KeyValueUtils.java b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/utils/KeyValueUtils.java
index 04eb30f72..8f3a8402d 100644
--- a/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/utils/KeyValueUtils.java
+++ b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/utils/KeyValueUtils.java
@@ -224,7 +224,12 @@ public class KeyValueUtils {
*/
public static int findNextFreeListCounter(Set<String> keySet,
String listPrefix) {
- return findNextFreeListCounter((String[]) keySet.toArray(), listPrefix);
+ if (keySet.isEmpty())
+ return 0;
+
+ String[] array = new String[keySet.size()];
+ keySet.toArray(array);
+ return findNextFreeListCounter(array, listPrefix);
}