Method getQuery

src/Server/HTTPHandler.cpp:864–896

}

std::string DynamicQueryHandler::getQuery(HTTPServerRequest & request, HTMLForm & params, ContextMutablePtr context)
{
    if (likely(!startsWith(request.getContentType(), "multipart/form-data")))
    {
        /// Part of the query can be passed in the 'query' parameter and the rest in the request body
        /// (http method need not necessarily be POST). In this case the entire query consists of the
        /// contents of the 'query' parameter, a line break and the request body.
        std::string query_param = params.get(param_name, "");
        return query_param.empty() ? query_param : query_param + "\n";
    }

    /// Support for "external data for query processing".
    /// Used in case of POST request with form-data, but it isn't expected to be deleted after that scope.
    ExternalTablesHandler handler(context, params);
    auto input_stream = request.getStream();
    params.load(request, *input_stream, handler);

    std::string full_query;
    /// Params are of both form params POST and uri (GET params)
    for (const auto & it : params)
    {
        if (it.first == param_name)
        {
            full_query += it.second;
        }
        else
        {
            customizeQueryParam(context, it.first, it.second);
        }
    }

    return full_query;
}

PredefinedQueryHandler::PredefinedQueryHandler(
    IServer & server_,