I'm using GraphDB-SE 6.4.4 and deployed graphdb-workbench using the startup.sh script. Our repository has 134 million statements and we want to use full text search instead of regex filter for faster query result. I tried the Proprietary Full-Text Search described here: https://confluence.ontotext.com/display/GraphDB64/GraphDB-SE+Full-text+Search#GraphDB-SEFull-textSearch-NodeSearchProprietaryFullTextSearch

and tried the query like this:

PREFIX fts: <http://www.ontotext.com/owlim/fts#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT ?label WHERE {
    ?X rdfs:label ?label .
    <searchingString:> fts:prefixMatchIgnoreCase ?label. }

but it returns no result. I tried several different searching strings, no result. The range of rdfs:label is string and they are explicitly typed as ^^xsd:string, so a sample object of rdfs:label would be "some string"^^xsd:string . I also tried without ^^xsd:string in the object, but it makes no difference. No result.

Below is the parameters I have set in the startup.sh script and they are shown in the system information page:

-XX:PermSize=256m
-XX:MaxPermSize=512m
-Xmx24g
-Xms2g
-Dowlim-license=mylicense
-DftsIndexPolicy=onStartup
-Dfts-memory=885m
-DenablePredicateList=true
-Dpredicate-memory=4425m
-Din-memory-literal-properties=true
-Denable-context-index=true

my repository setting is listed in the picture: alt text

Do you know why full text search does not work for me?

asked 07 Oct '15, 20:09

al3xtouch's gravatar image

al3xtouch
469813
accept rate: 0%

edited 07 Oct '15, 20:20


Hi,

the proprietary Full Text Search has been deprecated in latest versions of GraphDB, you can try the FTS using Lucene: link text

Sorry for not mentioning that in our documentation

link

answered 09 Oct '15, 03:26

Venelin%20Kotsev's gravatar image

Venelin Kotsev
4212
accept rate: 20%

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Asked: 07 Oct '15, 20:09

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Last updated: 06 Sep '16, 03:47

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