To add it to Fuseki.war is (= should be) a matter of adding the dependency:
<dependency>
<groupId>org.seaborne.mantis</groupId>
<artifactId>tdb2</artifactId>
<version>0.3.0</version>
</dependency>
It does not need to do anything with jena-fuseki-core (that depends on
TDB1) nor appear in the UI so no changes needed. System initialization is
by Jena's use of ServiceLoader. (I haven't tried - I'm on a chromebook
ATM). The standalone server is a copy of the Jena one with the dependency
added.
I don't what the size change is - 750K-1M.
If there is something else happening, do let me know.
Andy
On 7 September 2017 at 14:43, Chris Tomlinson <chris.j.tomlin...@gmail.com>
wrote:
> Hi,
>
> We very much would like to see TDB2 incorporated into Jena as an option,
> especially for the online compaction. I spent a bit of time trying to build
> a fuseki-tdb2-war module but it will be much easier if TDB2 is incorporated
> into Jena (we deploy fuseki as war into tomcat rather than the
> fuseki-tbd2-server approach).
>
> Thanks,
> Chris
>
> > On Sep 4, 2017, at 5:27 PM, Andy Seaborne <a...@apache.org> wrote:
> >
> > I'd like to offer TDB2 as a contribution to Apache Jena.
> >
> > It is by no means "finished" (is anything software ever finished?) but
> it is sufficiently there to talk about and kick the tyres; I'll send notes
> about the technical state of TDB2 separately in a moment.
> >
> > * It adds project overhead. The build is only a couple of minutes,
> including upload time, (a lot of testing is done with in-memory databases,
> like TDB1, which makes setup and teardown of tests much faster). However,
> more stuff in the codebase is still more to get right for a release.
> >
> > * Support: while TDB2 works, it is unproven and rough round the edges
> (unclear errors message, stacktraces rather than meaningful messages etc)
> and questions/tickets may be quite hard to respond to (complex situations;
> no track record of what's gone wrong before). Testing on MS Windows or
> macOS has not been done.
> >
> > * Integration: It is not stable enough to be used in mainstream Fuseki2
> as the default persistent database. I see this as happening gradually.
> There is a Fuseki+TDB2 jar built at the moment but you have to use
> configuration files to setup the database.
> >
> > https://github.com/afs/mantis/blob/master/use-fuseki-tdb2.md
> >
> > * Initial status: I suggest we label it "incoming" or some such - it
> > would not hold up a release for example, and not everything might be
> fixed at the point of a Jena release. It shouldn't stop the main code set
> that users rely on getting out in the usual cycle.
> >
> > * Legal issues: the code has always been under the Apache License
> (original work was done as part of grant from the UK gov which required
> open source deliverables) but it would be simpler and cleaner for, e.g.
> moving or fixing copyright/licence notices around, for there to be software
> grants. The two parties involved are myself and Epimorphics Ltd. Both
> parties are willing to submit the paperwork.
> >
> > * A project vote. This is a new set of modules so a formal, explicit
> vote seems worthwhile.
> >
> > Thoughts, concerns, questions?
> >
> > Andy
> >
> > The code:
> > https://github.com/afs/mantis
> > (I can clean this up before integration as to what we agree on, so that
> there is less noise and churn later).
> >
> > Builds:
> > org.seaborne.mantis:tdb2
> > org.seaborne.mantis:fuseki-tdb2-server
> >
>
>
