Yes, that sounds like what I had in mind. On Wed, Mar 27, 2013 at 3:39 PM, David Jordan <david.jor...@sas.com> wrote:
> Other thoughts are that it could operate as a shared server cache (in > memory) that operates at the graph or model layer, providing separate > client processes with the data at the graph/model layer. The server process > would make the lower level calls to the underlying storage layer. Is this > what you had in mind? This is similar to how some of the object persistence > technologies have been architected. > > -----Original Message----- > From: Claude Warren [mailto:cla...@xenei.com] > Sent: Wednesday, March 27, 2013 11:31 AM > To: users@jena.apache.org > Subject: Re: Architecture Direction > > I believe that there are "C" libraries for MySQL that use a low level > connection, but that is neither here nor there. > > What I am talking about is more along the lines of a remove Graph > interface. Something that does not use SPARQL but that uses the Jena Graph > model over the wire. > > +------------------- > | SPARQL > +------------------ > | Fuseki > +------------------ > | ARQ > +----------------- > | Jena Model > +----------------- > | Jena Graph > +--------------- > > I am talking about network connections that operate at the Model or Graph > level not SPARQL. So it would be possible to take an application that uses > the Jena Model and run it against a remote or central Jena server. > > So that you can make Model.findSubjectsWithProperty( "foo" ) calls against > the server without having to convert it to SPARQL. The other advantage is > that the resources that are returned by that call can then be used as > resources not result set values. > > The interface I am thinking of operates at a different layer and has > different semantics from the SPARQL layer. > > -- Claude > > On Wed, Mar 27, 2013 at 2:55 PM, Dominique Brezinski < > dominique.brezin...@gmail.com> wrote: > > > What do you think Fuseki is? What protocol is used by the MySQL client > > to query the server over the network? SQL. What protocol is used by > > the client to query Fuseki over the network? SPARQL. > > > > Using your analogy, Jena is more like InnoDB, and Fuseki is more like > > MySQL. What exactly do you want to build if it is not Fuseki? > > > > Dom > > > > On Mar 27, 2013, at 1:52 AM, Claude Warren <cla...@xenei.com> wrote: > > > > > Currently Jena seems to require the use of Fuseki (or other web > > > front > > end) > > > to handle multiple applications talking to the same > dataset/model/graph. > > > > > > Is this an intended (planned) direction or has there been any > > > thought put to the idea that a Jena server at a lower level. > > > Something akin to the MySQL C API which, as I understand it, allows > > > multiple application to attach to a single MySQL instance. > > > > > > What I am thinking of here is basically a Graph implementation for > > > the client that uses a network connection to proxy the requests to a > > > server component. All this without the need of installing Fuseki. > > > This would allow multiple applications written against the Jena API > > > to execute > > against > > > a shared Jena server. > > > > > > Other possible implementations are a Model implementation or a > > > Dataset implementation. Or perhaps all 3, depending on the > > > performance we can > > get > > > from the low level calls. > > > > > > > > > +-----+ +---------------+ +-----+ > > > |App1|------|Jena Server| -------|App2| > > > +-----+ +---------------+ +-----+ > > > | > > > +----------+ > > > | Fuseki | > > > +----------+ > > > > > > Is there any interest in this? > > > > > > > > > > > > Claude > > > > > > > > > > > > -- > > > I like: Like Like - The likeliest place on the web< > > http://like-like.xenei.com> > > > Identity: https://www.identify.nu/user.php?cla...@xenei.com > > > LinkedIn: http://www.linkedin.com/in/claudewarren > > > > > > -- > I like: Like Like - The likeliest place on the web< > http://like-like.xenei.com> > Identity: https://www.identify.nu/user.php?cla...@xenei.com > LinkedIn: http://www.linkedin.com/in/claudewarren > -- I like: Like Like - The likeliest place on the web<http://like-like.xenei.com> Identity: https://www.identify.nu/user.php?cla...@xenei.com LinkedIn: http://www.linkedin.com/in/claudewarren
