On Fri, August 10, 2007 17:52, Jacob Rief wrote: > I checked the HEAD of the repository-trunk, but did not find any evedence > for array support. Did you ever commit the work you have done so far?
Nope. Wasn't ready. > First I create a pure C function which does nothing else than copying the > raw array-data into a Postgres bytea-object. This function must be part of > a Postgres shared object, which has to be loaded into the server-side-part > of Postgres, ie. SPI-functions. Ouch. Exactly as you say: I can see that it makes sense as a solution for your problem, but I don't think we can take this approach in libpqxx! > While my solution works fine for me, I am not sure, that this can be a > general approach. However, I did not find any other solution to transfer > array data, unless one is willing to perform a > binary-to-ascii-to-binray-conversion. The conversion between text and binary (of the contents of the array) isn't all that big a deal. We do those conversions all the time anyway. The problem is that I need to add a parser that can unravel the text representation of the array itself. Which isn't _very_ hard, but consider strings in multibyte encodings where a multibyte character may contain a byte that looks just like an ASCII quote or string... :-/ > If there is a better concept, please let me know. If you think my solution > is of generic usage, I will work on my conversion-class to make it more > pqxx-like. For what you need, this is a very neat trick and I think it'd be worth publishing somewhere as an independent add-on. For libpqxx, I'm afraid I'll have to plod on with text parsing. On the bright side, there have been some noises about adding a bit of support for that to libpq. That'd save me the trouble. Jeroen _______________________________________________ Libpqxx-general mailing list Libpqxx-general@gborg.postgresql.org http://gborg.postgresql.org/mailman/listinfo/libpqxx-general
