On 12/09/11 11:24, Paolo Castagna wrote:
Hi Jérôme,
you are lucky, I've just exactly the same need as you and I've something about
it recently.
Unfortunately, the new LARQ (as a separate module) still did not make it into
Fuseki on trunk.
We have an open JIRA for it which you can watch|vote|contribute to:
https://issues.apache.org/jira/browse/JENA-63
Should we chnage the title of JENA-63? It's not about Fuseki, which
just supplies the SPARQL protocol and routes requests to the right
dataset. It's the dataset that must do the LARQ coordination - initial
indexing and incrementally later, across restarts.
It is possible to get Fuseki to automatically run initialization code -
the configuration file support ja:loadClass (a bit misnamed - it loads
and runs a static) but I don't think that is anything other than a stop-gap.
Andy
In the meantime, if you want to use LARQ with Fuseki this is what you need to
do:
cd /tmp
svn co https://svn.apache.org/repos/asf/incubator/jena/Jena2/Fuseki/trunk/
fuseki
cd /tmp/fuseki
wget
https://issues.apache.org/jira/secure/attachment/12482758/JENA-63_Fuseki_r1136050.patch
patch -p0< JENA-63_Fuseki_r1136050.patch
mvn package
Now, you can simply use the Fuseki config.ttl file as explained here:
http://openjena.org/wiki/Fuseki#Fuseki_Configuration_File
and use the ja:textIndex property on a dataset to specify an non existing
directory.
LARQ when you point it at a non existing directory will perform the indexing
for you.
This is particularly useful when you have multiple datasets configured in
Fuseki.
WARNING: it might take a while to index large datasets, so be patient.
See also: http://markmail.org/thread/tmptip55ru5wxrrj
LARQ snapshots are here:
https://repository.apache.org/content/repositories/snapshots/org/apache/jena/larq/0.2.2-incubating-SNAPSHOT/
and I can quickly fix/improve things if you have problems or good suggestions.
I hope this helps, let me know how it goes.
Paolo
Jérôme wrote:
Hi,
i'm trying to use LARQ with my Fuseki server.
I would like to programmaticaly indexing(with lucene) documents when the
server starts.
Something like that:
Model model = ModelFactory.createDefaultModel();
IndexBuilderString larqBuilder = new IndexBuilderString();
model.register(larqBuilder);
FileManager.get().readModel(model, "Data/books.ttl");
larqBuilder.closeWriter();
model.unregister(larqBuilder);
index = larqBuilder.getIndex();
LARQ.setDefaultIndex(index);
Is it possible? In which class it would be the best?
Thanks
Jerome
