On Mon, 4 Oct 2010, Dorian Taylor (Lists) wrote: > Hi, > > Just trying to get a bearing on transaction support in Redland. > Grepping the 1.0.11 source looks like they're implemented for MySQL, > PostgreSQL, SQLite and Virtuoso. Also it seems the bindings (Perl at > least) map the functions but don't expose them in the public API. Two > questions: > > 1) Are there any plans to implement transactions for Berkeley DB?
There are always plans. About 3 years ago I thought about doing it, and using the BDB transactions would make it possible. Medium hard amount of work. > 2) How much overhead is there in getting transactions out into the > Perl (or other bindings for that matter) API? Not too hard as long as it is exposed in the Redland SWIG API http://github.com/dajobe/librdf/blob/master/Redland.i which it is, and has been available for several years I guess. There are only three functions and they would be methods of the model class (perl RDF::Redland::Model) in any of the bindings: int librdf_model_transaction_start(librdf_model* model); int librdf_model_transaction_commit(librdf_model* model); int librdf_model_transaction_rollback(librdf_model* model); Which would appear under http://librdf.org/docs/pod/RDF/Redland/Model.html but doesn't have those 3 methods. This would be about 3 lines of perl each. So, easy! Dave _______________________________________________ redland-dev mailing list [email protected] http://lists.librdf.org/mailman/listinfo/redland-dev
