As David has indicated, we no longer want to support arbitrary 3rd party
triple stores from TBC, because those features are expensive to maintain
for too little gain, and performance will not be good anyway. Composer
(and TopBraid EDG) are programmed against Jena with certain
architectural assumptions. It's all triple-based (SPO) and queries go
through union graphs. This is leading to many small requests that
quickly overwhelm external triple stores, while the built-in Jena graphs
(in-memory and TDB) have good computational characteristics.
Holger
On 2021-05-14 1:15 am, David Price wrote:
On 13 May 2021, at 13:46, [email protected] <http://gmail.com>
<[email protected]
<mailto:[email protected]>> wrote:
do you make your concrete interface requirements public, to permit
validation and incorporation of jena emulations?
No idea, but I’ve never heard anyone mention such a thing. I’m a
Composer user not a Composer developer. Maybe someone else knows for
certain?
Cheers,
David
On Thursday, 13 May 2021 at 14:17:35 UTC+2 David Price wrote:
On 13 May 2021, at 11:34, [email protected]
<http://gmail.com/> <[email protected]> wrote:
there are threads in this group which refer to both "plugin" and
"sesame-compatible" approaches to attaching an external rdf
store to composer.
investigations of the suggested methods and attempts to apply
referenced descriptions have, however, failed to produce a
working approach.
in one case, the deprecated plugin raises questions about the
support for that approach.
in another, the described method to incorporate a store through
a sesame connector leads in the current composer version to a
dialog in which the described option is no longer present.
is there any concise documentation for either of those approaches?
- is there an api/architecture specification for plug-in for
external rdf stores?
- where in the documentation is the up-to-date description for
how to connect to a sesame-compatible rdf storage service?
As of about two years ago, the support for non-Jena triplestores
in Composer was removed. Unused features occasionally get removed
to stop wasting dev resources.
I see, but have never used, a Sesame connection in TBCME 6.1.1
but not in TBCME 6.2.4 so appears you’ll need to use an old 6.1
release of Composer if you need that feature.
Cheers,
David
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