Hi, I want to store pointers to avoid copy of large amount of data. And then I can pass such table and extract pointers from the column and access object it points to.
Thanks On Wed, 9 Oct 2024 at 13:14, Xiufeng Huang <[email protected]> wrote: > I think arrow structures are supposed to hold data. Why would you want to > store pointers in arrow structures any way? > > On Wed, Oct 9, 2024 at 3:29 PM Yi Cao <[email protected]> wrote: > >> Hi Arrow community, >> Need some advice here! >> >> Our C++ application processes tabular data and Apache Arrow looks >> promising in our case. I try to implement the scenario below in c++ arrow >> however, cannot find a solution or a similar example. Could anyone please >> share your thoughts ? >> >> Say here is a table of three columns. First column is int type and the >> second column is string type. For the third column, we would like to store >> std::shared_ptr so that only the shared pointer is copied but no copy of >> large data it pointes to. >> >> I have read source code of extension type and a few examples like UUID >> and fixed tensor type. However, I'm still not sure how to implement the >> above case where an array of shared_ptr is stored in arrow::RecordBatch or >> arrow::Table. >> >> Is it possible and can any example be provided ? >> >> Thank you and best regards. >> >> >> >> >> > >
