Function LookupOne

src/index/blockfilterindex.cpp:304–320

}

static bool LookupOne(const CDBWrapper& db, const CBlockIndex* block_index, DBVal& result)
{
    // First check if the result is stored under the height index and the value there matches the
    // block hash. This should be the case if the block is on the active chain.
    std::pair<uint256, DBVal> read_out;
    if (!db.Read(DBHeightKey(block_index->nHeight), read_out)) {
        return false;
    }
    if (read_out.first == block_index->GetBlockHash()) {
        result = std::move(read_out.second);
        return true;
    }

    // If value at the height index corresponds to an different block, the result will be stored in
    // the hash index.
    return db.Read(DBHashKey(block_index->GetBlockHash()), result);
}

static bool LookupRange(CDBWrapper& db, const std::string& index_name, int start_height,
                        const CBlockIndex* stop_index, std::vector<DBVal>& results)