On 08/09/2019 09:16, Marco Neumann wrote:
Romain,
sure Jena gives you so much more than just the basic graph infrastructure.
I wasn't acutely aware of the guava shade mandatory requirement in a
minimal viable setup of Jena. Still I would encourage you to engage with
Jena community to discuss design ideas and opportunity for reuse of jena
components in your work on graph at commons and apache.
Yes, Jena uses a shaded guava. Used as a library in an application,
Jena choice of libraries can get into version issues. Guava used to
change between version quite a bit (from general reading, I think it is
more stable nowadays) so we don't force the Guava version on the
application but shade it to make the Jena use independent of the app choice.
FYI I currently need the following libraries in a minimal viable setup to
work with the Jena graph api.
jena-base (215kb), jena-core (1.69mb), jena-shaded-guave (2.73mb), log4j
(479kb), slf4j-log (41kb), slf4j-api (12kb)
FYI:
A choice of slf4j logging impl is needed - it does not have to be
log4j1. Testing and jena-cmds does make that choice but for general use
of the modules, it is choice-independent.
Marco
On Sat, Sep 7, 2019 at 10:33 PM Romain Manni-Bucau <rmannibu...@gmail.com>
wrote:
Hi Marco,
Had a look to jena for another project and didnt evaluate it here for these
reasons (happy to be wrong):
- dep stack was huge for only graph part (guava shade, some other uneeded
commons etc, most being excludable but without guarantees in time)
- it is not about DAG and therefore misses navigation methods (which is
what I need in addition to "mutation" methods for the algo i want to impl)
- it is not the goal of jena so API and core stack can evolve in an
undesired manner
To mention alternatives, spark, flink, beam, ignite for the few I can think
about, have something not crazy but still this stack and API issues :(.
This is how i ended up looking commons, to try to have something stable and
dep free.
Romain
Le sam. 7 sept. 2019 à 23:15, Marco Neumann <marco.neum...@gmail.com> a
écrit :
I highly recommend to take a look at the Apache Jena project for
inspiration here. It has a very mature graph representationat this point:
https://jena.apache.org/
https://jena.apache.org/documentation/javadoc/jena/org/apache/jena/graph/Graph.html
Jena use triples in the form of <v><e><v> to encode the graph<v,e>
give it try and make sure to post to users@jena.apache.org if you have
any
questions
enjoy,
Marco
On Sat, Sep 7, 2019 at 10:30 AM Romain Manni-Bucau <
rmannibu...@gmail.com>
wrote:
Hi all
What is the status of graph at commons - or apache if we have something
elsewhere?
I found in sandbox that doc
https://commons.apache.org/sandbox/commons-graph/apidocs/org/apache/commons/graph/DirectedGraph.html
,
but wonder if we have something live and if not why it failed.
My rational is I started to write some DAG modelization and tooling
(backward browsing in my case) but I see it could be generic so wonder
if
it is worse thinking about commons or incubator of if scope is too
small
for that and keeping it specific is saner.
Anyone has some pointers?
--
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Marco Neumann
KONA
--
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Marco Neumann
KONA
