[2108] Add another typedef in ZoneData class

diff --git a/src/lib/datasrc/memory/zone_data.h b/src/lib/datasrc/memory/zone_data.h
index f59268033f0572011347207293e32cbb8e4ec107..09306d791dcbdc28d74767cc67f0b1e58bcb8d7e 100644 (file)
--- a/src/lib/datasrc/memory/zone_data.h
+++ b/src/lib/datasrc/memory/zone_data.h
@@ -43,6 +43,7 @@ namespace memory {
 
 typedef DomainTree<RdataSet> ZoneTree;
 typedef DomainTreeNode<RdataSet> ZoneNode;
+typedef DomainTreeNodeChain<RdataSet> ZoneChain;
 
 /// \brief NSEC3 data for a DNS zone.
 ///