Hi Chris,
I'd like to add sthg about the documentation page : it's a bit laconic,
and I spent a few hours to understand that values have to be provided in
config file for dataset uri.
Furthermore, I had to search on Stackoverflow, and saw other users had
the same problem with jena-text config)
Maybe s.o. could add some explanations on this page?
-- give a value for dataset URI (replace <#dataset> with sthg like
:my_dataset)
-- give a path for Lucene index files => this will create a directory
-- give a path for TDB (tdb:location
"/home/.../fuseki/run/databases/My_dataset")
-- if you don't set environment variables, run fuseki after changing
directory ("cd My_Fuseki_install) and give relative paths for command
arguments (" --config=run/my_config.ttl ").
Le 18/01/2019 à 17:13, Chris Tomlinson a écrit :
Hi,
1) If you’re using a default config, it does not have a working jena-text
configuration. The config will need to include skos:prefLabel in the entity
map.
2) when you change the jena-text in significant ways, such as changing what analyzer
is used for a given property and so on, then you’ll need to rebuild the Lucene index
via reloading the dataset or using the textIndexer
<https://jena.apache.org/documentation/query/text-query.html#building-a-text-index>.
I don’t recall this being mentioned as part of your testing
3) Please indicate exactly which item you’re using jena-fuseki-war-3.9.0.war or
jena-fuseki-webapp-3.9.0.jar etc, and the config file itself. The error you’ve
mentioned previously:
Jan 17 17:00:28 semantic-dev java[16800]: [2019-01-17 17:00:28] Config INFO Load
configuration:
file:///home/text/tools/apache-jena-fuseki-3.9.0/run/configuration/text_index.ttl
<file:///home/text/tools/apache-jena-fuseki-3.9.0/run/configuration/text_index.ttl>
Jan 17 17:00:28 semantic-dev java[16800]: [2019-01-17 17:00:28] WebAppContext WARN
Failed startup of context o.e.j.w.WebAppContext@4159e81b{Apache Jena Fuseki
Server,/,file:///home/text/tools/apache-jena-fuseki-3.9.0/webapp/,UNAVAILABLE
<file:///home/text/tools/apache-jena-fuseki-3.9.0/webapp/,UNAVAILABLE>}
Jan 17 17:00:28 semantic-dev java[16800]: at
org.apache.jena.fuseki.build.FusekiConfig.readAssemblerFile(FusekiConfig.java:148)
suggests to me that something in the config file is confusing the
readAssemblerFile. It doesn’t look like it’s failing in the reading the
jena-text portion of the config.
If http://api.finto.fi/download/mesh/mesh-skos.ttl
<http://api.finto.fi/download/mesh/mesh-skos.ttl> the dataset, then can you cut
it down to just a small test case with some concepts with “medi” and a few without?
That along with the other information should help move this further along..
4) Your query:
PREFIX skos: <http://www.w3.org/2004/02/skos/core#
<http://www.w3.org/2004/02/skos/core#>>
PREFIX text: <http://jena.apache.org/text# <http://jena.apache.org/text#>>
SELECT *
WHERE
{
GRAPH <http://www.yso.fi/onto/mesh/ <http://www.yso.fi/onto/mesh/>>
{
?concept text:query (skos:prefLabel "medi") .
?concept skos:prefLabel ?prefLabel .
# FILTER ( REGEX(?prefLabel, "\\bmedi", "i"))
}
}
limit 10
might effectively just be executing:
?concept skos:prefLabel ?prefLabel .
if there is actually no jena-text config - I haven’t checked what happens when
there is no TextIndex configured and the text:query is invoked, but may be a
noop
Thanks,
Chris
On Jan 18, 2019, at 8:08 AM, Mikael Pesonen <mikael.peso...@lingsoft.fi> wrote:
On 18/01/2019 13:40, Andy Seaborne wrote:
On 17/01/2019 15:45, Mikael Pesonen wrote:
On 17/01/2019 17:38, Andy Seaborne wrote:
On 17/01/2019 12:51, Mikael Pesonen wrote:
On 17/01/2019 13:58, Andy Seaborne wrote:
On 16/01/2019 12:50, Mikael Pesonen wrote:
Hi,
I'm trying to get text search work. Sparql REGEX takes few seconds to finish so
hoping this would be faster. Application is term search using SKOS ontology.
First tested if it's enabled by default
?concept text:query (skos:prefLabel "medi") .
?concept skos:prefLabel ?prefLabel
That returns all concepts so I guess it's not enabled.
If it returns all concepts, the first line matched (otherwise you get none). If so, there
is a text index and "medi" (case insensitive) matches Lucene rules, everything.
What does this mean then, why is it matching everything?
If zero matches, you don't get to ?concept skos:prefLabel ?prefLabel (if the
text index is correct)
The query above, if the index is setup correctly, gets all concepts where any skos:prefLabel
matches "medi" (not just at the start), then gets all skos:prefLabel for those concepts.
That does not mean ?prefLabel only matches "medi"
:c skos:prefLabel "medi" ;
skos:prefLabel "Other" .
will return 2 matches including ?prefLabel="Other"
Yes that is how I understood it. But ?concept text:query (skos:prefLabel "medi")
returns all concepts, also those that don't have any label having "medi".
Then I don't understand what is going on.
Do you have a complete, minimal example that someone can use to recreate the
situation?
This is the query:
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX text: <http://jena.apache.org/text#>
SELECT *
WHERE
{
GRAPH <http://www.yso.fi/onto/mesh/>
{
?concept text:query (skos:prefLabel "medi") .
?concept skos:prefLabel ?prefLabel .
# FILTER ( REGEX(?prefLabel, "\\bmedi", "i"))
}
}
limit 10
and graph is dump copied from here: https://finto.fi/mesh/en/
end of page "Download this vocabulary"
So to make clear, we have made zero configuration on jena/fuseki, all is
default from 3.9.0 package.
Andy
--
Lingsoft - 30 years of Leading Language Management
www.lingsoft.fi
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Mikael Pesonen
System Engineer
e-mail: mikael.peso...@lingsoft.fi
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