Fix NoSuchElementException in toString()

Original patch missed the fact that an empty set will throw, fix
that up.

Change-Id: I2d0588ec0499475935d285b3be6db299a9d4d525
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/utils/UnsignedLongRangeSet.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/utils/UnsignedLongRangeSet.java
index b8c2fcc3a6f2815b9a6edb5f2eb5658ca074621d..9ea92d0b9ec7e370423c5964184213994a04557d 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/utils/UnsignedLongRangeSet.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/utils/UnsignedLongRangeSet.java
@@ -69,7 +69,8 @@ public final class UnsignedLongRangeSet implements Mutable {
     @Override
     public String toString() {
         return MoreObjects.toStringHelper(this)
-                .add("span", rangeset.span())
+                .omitNullValues()
+                .add("span", rangeset.isEmpty() ? null : rangeset.span())
                 .add("rangeSize", rangeset.asRanges().size())
                 .toString();
     }