- From: Jeen Broekstra <jeen.broekstra@aduna-software.com>
- Date: Fri, 19 Jan 2007 12:10:42 +0100
- To: Aldo Bucchi <aldo.bucchi@gmail.com>
- CC: semantic-web@w3.org
Aldo Bucchi wrote: > I am trying to keep two repositories in sync. One of them is a sesame > Repository running in a java app, the other one is a Jena Model > running on another java app. > > Don't ask why jaja, it's just the way it is. > > Well, the thing is that one of them is the main repository ( the > sesame one ) and the other one is just a mirror. > > I was thinking of listening to sailconnection events ( add and remove > statements ) and generate a simple rdfxml package with the delta ( > additions and removals ) that can be easily sent over the wire to the > jena side, but I haven't been able to understand the correct place to > hook the listeners. > > I am modifying the sesame Repository through > Repository.getConnection().etc() methods, so I need a way to get hold > of the underlying SailConnection. I think this question would probably be more appropriate at Sesame's web forum[1] or (since it's a question about Sesame 2, which is still under development) the Sesame developers mailinglist[2], but to give a brief answer to your question anyway: you can get a hold of the underlying Sail by using Repository.getSail() (note that in the current SVN version of Sesame 2 this method has been moved from the Repository interface to the specific SailRepository implementation). Then, you should register yourself (well... an object you created anyway ;)) on the Sail as a SailChangedListener. You will then be notified of any changes to the Sail. A delta is a bit difficult to realize at present, since the SailChangedEvent does not currently give you that information - we are considering extending it to do so though. HTH. Cheers, Jeen [1] http://www.openrdf.org/forum/ [2] https://lists.sourceforge.net/lists/listinfo/sesame-devel -- Aduna - Guided Exploration www.aduna-software.com Prinses Julianaplein 14-b 3817 CS Amersfoort The Netherlands +31-33-4659987 (office)
Received on Friday, 19 January 2007 11:14:53 UTC