Disable the bidirection edges.

src/graph/optimizer/rule/GetEdgesTransformRule.cpp

@@ -73,6 +73,9 @@ StatusOr<OptRule::TransformResult> GetEdgesTransformRule::transform(
  OptGroupNode::create(ctx, newAppendVertices, appendVerticesGroupNode->group());
 
  auto *newScanEdges = traverseToScanEdges(traverse);
+ if (newScanEdges == nullptr) {
+ return TransformResult::noTransform();
+ }
  auto newScanEdgesGroup = OptGroup::create(ctx);
  auto newScanEdgesGroupNode = newScanEdgesGroup->makeGroupNode(newScanEdges);
 
@@ -102,6 +105,18 @@ std::string GetEdgesTransformRule::toString() const {
 /*static*/ graph::ScanEdges *GetEdgesTransformRule::traverseToScanEdges(
  const graph::Traverse *traverse) {
  const auto *edgeProps = traverse->edgeProps();
+ if (edgeProps == nullptr) {
+ return nullptr;
+ }
+ for (std::size_t i = 0; i < edgeProps->size(); i++) {
+ auto type = (*edgeProps)[i].get_type();
+ for (std::size_t j = i + 1; j < edgeProps->size(); j++) {
+ if (type == -((*edgeProps)[j].get_type())) {
+ // Don't support to retrieve edges of the inbound/outbound together
+ return nullptr;
+ }
+ }
+ }
  auto scanEdges = ScanEdges::make(
  traverse->qctx(),
  nullptr,

tests/tck/features/match/Scan.feature

@@ -155,3 +155,17 @@ Feature: Match seek by scan
  LIMIT 3
  """
  Then a ExecutionError should be raised at runtime: Scan vertices must specify limit number.
+ When executing query:
+ """
+ MATCH ()-[e:is_teacher]-()
+ RETURN type(e) AS Type, e.start_year AS StartYear, e.end_year AS EndYear
+ LIMIT 3
+ """
+ Then a ExecutionError should be raised at runtime: Scan vertices must specify limit number.
+ When executing query:
+ """
+ MATCH ()-[e]-()
+ RETURN type(e) AS Type, e.start_year AS StartYear, e.end_year AS EndYear
+ LIMIT 3
+ """
+ Then a ExecutionError should be raised at runtime: Scan vertices must specify limit number.