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Query::Plan::EdgeFilter bugfix

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Summary:
Resolved the bug where edge filters with no edge-types dont accept any edge.
Illustrated with the following queries:
CREATE ()-[]->()
MATCH ()-[]->()
	(produces 0 results, expected 1)

Reviewers: mislav.bradac

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D265
This commit is contained in:
florijan 2017-04-12 09:01:44 +02:00
parent 355b9a9b9a
commit ea202dc52a
2 changed files with 22 additions and 2 deletions
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4
src/query/frontend/logical/operator.cpp
View File

@ -427,8 +427,8 @@ bool EdgeFilter::EdgeFilterCursor::EdgePasses(const EdgeAccessor &edge,
// edge type filtering - logical OR
const auto &types = self_.edge_atom_->edge_types_;
GraphDbTypes::EdgeType type = edge.edge_type();
if (!std::any_of(types.begin(), types.end(),
[type](auto t) { return t == type; }))
if (types.size() && std::none_of(types.begin(), types.end(),
[type](auto t) { return t == type; }))
return false;
ExpressionEvaluator expression_evaluator(frame, symbol_table);

20
tests/unit/query_plan_match_filter_return.cpp
View File

@ -388,6 +388,26 @@ TEST(QueryPlan, EdgeFilter) {
EXPECT_EQ(result.GetResults().size(), 1);
}
TEST(QueryPlan, EdgeFilterEmpty) {
Dbms dbms;
auto dba = dbms.active();
auto v1 = dba->insert_vertex();
auto v2 = dba->insert_vertex();
dba->insert_edge(v1, v2, dba->edge_type("type"));
dba->advance_command();
AstTreeStorage storage;
SymbolTable symbol_table;
auto n = MakeScanAll(storage, symbol_table, "n");
auto r_m = MakeExpand(storage, symbol_table, n.op_, n.sym_, "r",
EdgeAtom::Direction::RIGHT, false, "m", false);
auto edge_filter =
std::make_shared<EdgeFilter>(r_m.op_, r_m.edge_sym_, r_m.edge_);
EXPECT_EQ(1, PullAll(edge_filter, *dba, symbol_table));
}
TEST(QueryPlan, EdgeFilterMultipleTypes) {
Dbms dbms;
auto dba = dbms.active();