Hi Sorin!
Why do you need the type in the text index? The text index is designed
to store literals. It does not know how to handle URIs at all.
Generally what you would do to combine text search with a restriction on
rdf:type is to use separate query patterns, e.g.
{
?s text:query 'nuclear' .
?s a gndo:SeriesOfConferenceOrEvent .
}
-Osma
On 28/04/16 18:30, Sorin Gheorghiu wrote:
Hi Andy,
I need just the type of the entry, from the example just the last part
'SeriesOfConferenceOrEvent'.
If possible I would set an analyser which would trim the first part, but
I don't know how.
Thanks
Sorin
Am 28.04.2016 um 17:25 schrieb Andy Seaborne:
Hi Sorin,
I'm curious as to why you are indexing a URI and what you see the
benefit of that. You might at least want to set the analyser carefully.
Andy
PS I fixed the cause of the "UnsupportedOperationException" but only
in the sense that it now issues a warning and skips the non-literal.
The test for being a literal or not was there ... but after calling
getLiteral.
On 28/04/16 15:47, Sorin Gheorghiu wrote:
Hello,
Jena text index returned the following error:
# java -cp /opt/apache-jena-fuseki-2.3.1/fuseki-server.jar
jena.textindexer --desc=/etc/default/fuseki/jena-text-config.ttl
java.lang.UnsupportedOperationException:
http://d-nb.info/standards/elementset/gnd#SeriesOfConferenceOrEvent is
not a literal node
at org.apache.jena.graph.Node.getLiteral(Node.java:100)
at
org.apache.jena.query.text.TextQueryFuncs.entityFromQuad(TextQueryFuncs.java:80)
at
org.apache.jena.query.text.TextQueryFuncs.entityFromQuad(TextQueryFuncs.java:67)
at jena.textindexer.exec(textindexer.java:122)
at jena.cmd.CmdMain.mainMethod(CmdMain.java:93)
at jena.cmd.CmdMain.mainRun(CmdMain.java:58)
at jena.cmd.CmdMain.mainRun(CmdMain.java:45)
at jena.textindexer.main(textindexer.java:51)
when attempted to index entries like:
@prefix gndo: <http://d-nb.info/standards/elementset/gnd#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
<http://d-nb.info/gnd/1-2> gndo:gndIdentifier "1-2" ;
gndo:variantNameForTheConferenceOrEvent "Conferentie van
Niet-Kernwapenstaten" , "Conference on Non-Nuclear Weapon States" ;
gndo:preferredNameForTheConferenceOrEvent "Conference of
Non-Nuclear Weapon States" ;
a gndo:SeriesOfConferenceOrEvent .
Here is the EntityMap assembler setup:
<#entMap> a text:EntityMap ;
text:entityField "gndUri" ;
text:defaultField "prefName" ; ## Must be defined in the
text:map
text:map (
[ text:field "prefName";
text:predicate gndo:preferredNameForTheSubjectHeading
]
[ text:field "type";
text:predicate rdf:type
]
...
'type' contains an URL, but a literal node is expected instead.
There is no difference if 'type' is defined as 'text' or 'string' in
Solr schema.xml.
How is possible to fix it?
Thank you in advance,
Sorin
--
Osma Suominen
D.Sc. (Tech), Information Systems Specialist
National Library of Finland
P.O. Box 26 (Kaikukatu 4)
00014 HELSINGIN YLIOPISTO
Tel. +358 50 3199529
[email protected]
http://www.nationallibrary.fi
