Neil Conway wrote: > Bruce Momjian wrote: > > We considered putting XML in psql or libpq in the past, but the problem > > is that interfaces like jdbc couldn't take advantage of it. > > Well, you could implement it as a C UDF and use SPI. Or write it as a C > client library, and use JNI. Or just provide a Java implementation -- > it's not like the COPY -> XML transformation is very complex. > > To restate the case: > > - I don't see how this feature is useful. Perhaps I'm mistaken, but I > don't think there's a lot of user demand for it (feel free to > demonstrate the contrary) > > - The COPY -> XML transformation is trivial -- it would be easy for > clients to roll their own. At the same time, there is no standard or > canonical XML representation for COPY output, and I can easily imagine > different clients needing different representations. So there is limited > value in providing a single, inflexible backend implementation. > > - There's no need for it to be in the backend, anyway. Perhaps if there > were overwhelming demand for this functionality, we would need to > provide it for all client libraries and the easiest solution would be to > put it in the backend, but I don't think that's the case. > > If people really think XML COPY output mode is useful, why not implement > it client-side first and host it on pgfoundry? If lots of people are > using the client-side code, we can consider moving it into the core > distribution or the backend itself at that point.
All I can say is that we rejected an XML in the client patch a long time ago and the discussion was that it belongs in the backend so everyone can use it. I don't use XML myself so I have no opinion. We need people who need XML output to comment in this thread. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
