Function getScanNodeCandidates

src/optimizer/acc_hash_join_optimizer.cpp:158–174

Find all ScanNodeIDs under root which scans parameter nodeID. Note that there might be multiple ScanNodeIDs matches because both node and rel table scans will trigger scanNodeIDs.

// Find all ScanNodeIDs under root which scans parameter nodeID. Note that there might be
// multiple ScanNodeIDs matches because both node and rel table scans will trigger scanNodeIDs.
static std::vector<LogicalOperator*> getScanNodeCandidates(const Expression& nodeID,
    LogicalOperator* root) {
    std::vector<LogicalOperator*> result;
    auto collector = LogicalScanNodeTableCollector();
    collector.collect(root);
    for (auto& op : collector.getOperators()) {
        auto& scan = op->constCast<LogicalScanNodeTable>();
        if (scan.getScanType() != LogicalScanNodeTableType::SCAN) {
            // Do not apply semi mask to index scan.
            continue;
        }
        if (nodeID.getUniqueName() == scan.getNodeID()->getUniqueName()) {
            result.push_back(op);
        }
    }
    return result;
}

static std::vector<LogicalOperator*> getRecursiveExtendInputNodeCandidates(const Expression& nodeID,
    LogicalOperator* root) {