Method initScanState

src/storage/table/rel_table.cpp:172–191

}

void RelTable::initScanState(Transaction* transaction, TableScanState& scanState,
    bool resetCachedBoundNodeSelVec) const {
    auto& relScanState = scanState.cast<RelTableScanState>();
    // Note there we directly read node at pos 0 here regardless the selVector is filtered or not.
    // This is because we're assuming the nodeIDVector is always a sequence here.
    const auto boundNodePos = resetCachedBoundNodeSelVec ?
                                  relScanState.nodeIDVector->state->getSelVector()[0] :
                                  relScanState.cachedBoundNodeSelVector[0];
    const auto boundNodeID = relScanState.nodeIDVector->getValue<nodeID_t>(boundNodePos);
    NodeGroup* nodeGroup = nullptr;
    // Check if the node group idx is same as previous scan.
    const auto nodeGroupIdx = StorageUtils::getNodeGroupIdx(boundNodeID.offset);
    if (relScanState.nodeGroupIdx != nodeGroupIdx) {
        // We need to re-initialize the node group scan state.
        nodeGroup = getDirectedTableData(relScanState.direction)->getNodeGroup(nodeGroupIdx);
    } else {
        nodeGroup = relScanState.nodeGroup;
    }
    scanState.initState(transaction, nodeGroup, resetCachedBoundNodeSelVec);
}

bool RelTable::scanInternal(Transaction* transaction, TableScanState& scanState) {
    return scanState.scanNext(transaction);