Parliament could theoretically provide this information, as it maintains statements in a monotonically increasing statement table (it doesn't as of yet reuse the space freed when deleting statements). Practically, however, it would probably require a good amount of work to expose it.
Also, although I don't know that any implementations exist, a store with triple/quad level MVCC could provide revision history (including the statements added in the last transaction). -Stephen On Fri, Oct 28, 2011 at 8:27 AM, Laurent Pellegrino < [email protected]> wrote: > Thanks to all and especially Andy for pointing me to this paper :) > > Laurent > > On Fri, Oct 28, 2011 at 1:31 PM, Andy Seaborne <[email protected]> wrote: > > On 26/10/11 08:39, Dave Reynolds wrote: > >> > >> On Tue, 2011-10-25 at 21:38 +0200, Laurent Pellegrino wrote: > >>> > >>> Hi all, > >>> > >>> Is it possible to retrieve the last N quadruples which have been > >>> inserted into a Jena TDB datastore when the quadruples which have been > >>> inserted do not contain any information about their publication time > >>> (e.g. a jena built-in function to use in order to order by using the > >>> internal identifiers used by the repository)? > >> > >> I don't believe there is such an insert timestamp available. > > > > There is no such timestamp. > > > > There was a paper at ISWC2011 that suggested using timestamps on > something > > (e.g. B+Tree blocks) to guide caching. [1] > > > > But as Greg (The presenter) said, "it cuts through every layer of > > abstraction in a system to provide that information." and various > > implementers in the audience smirked. > > > > So a system derived from TDB to add it maybe done by someone who s' > > interested. Also, for most users, it would be a noticable cost. > > > > Andy > > > > > > [1] > > Enabling fine-grained HTTP caching of SPARQL query results > > Gregory Todd Williams and Jesse Weave > > > > > http://iswc2011.semanticweb.org/fileadmin/iswc/Papers/Research_Paper/03/70310752.pdf > > > >> > >> Dave > >> > >> > > > > >
