ExpandBreadthFirst can also have optional input

Reviewers: teon.banek Reviewed By: teon.banek Differential Revision: https://phabricator.memgraph.io/D735
2017-09-01 14:09:36 +02:00 · 2017-09-01 14:09:36 +02:00 · 0a5e9256f1
commit 0a5e9256f1
parent 77e574fcc5
1 changed files with 1 additions and 1 deletions
--- a/src/query/plan/operator.cpp
+++ b/src/query/plan/operator.cpp
@ -918,7 +918,7 @@ ExpandBreadthFirst::ExpandBreadthFirst(
      inner_node_symbol_(inner_node_symbol),
      inner_edge_symbol_(inner_edge_symbol),
      where_(where),
-      input_(input),
+      input_(input ? input : std::make_shared<Once>()),
      input_symbol_(input_symbol),
      existing_node_(existing_node),
      graph_view_(graph_view) {}