Handle search::streaming::EquivQueryNode as a leaf in the query tree.

1 files changed, 25 insertions, 0 deletions

diff --git a/searchlib/src/vespa/searchlib/query/streaming/equiv_query_node.h b/searchlib/src/vespa/searchlib/query/streaming/equiv_query_node.h
new file mode 100644
index 00000000000..b5cdb31274f
--- /dev/null
+++ b/searchlib/src/vespa/searchlib/query/streaming/equiv_query_node.h
@@ -0,0 +1,25 @@
+// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+
+#pragma once
+
+#include "multi_term.h"
+
+namespace search::streaming {
+
+/**
+   N-ary "EQUIV" operator that merges terms from nodes below.
+*/
+class EquivQueryNode : public MultiTerm
+{
+public:
+    EquivQueryNode(std::unique_ptr<QueryNodeResultBase> result_base, uint32_t num_terms);
+    ~EquivQueryNode() override;
+    bool evaluate() const override;
+    const HitList & evaluateHits(HitList & hl) const override;
+    void unpack_match_data(uint32_t docid, const fef::ITermData& td, fef::MatchData& match_data) override;
+    EquivQueryNode* as_equiv_query_node() noexcept override;
+    const EquivQueryNode* as_equiv_query_node() const noexcept override;
+    std::vector<std::unique_ptr<QueryTerm>> steal_terms();
+};
+
+}