Re: Java 8 or 11?

2021-01-05 Thread Steve Vestal
Support for JAXB was removed from Java11.  For those using that and Jena in osgi bundles (e.g., Eclipse plugins), my impression from some initial experimenting and searching is that a bit of wizardry is needed to add that on the side and get it working.  I could not find a clean and simple

Re: How to index different types of RDF file in one data set

2021-01-05 Thread Andy Seaborne
Hi there, I'm not sure what you wish to do - could you sketch a query you want to ask of the data? In a single jena-text Lucene index, all the values of some predicate are indexed in the same Lucene field. Predicates in RDF globally defined relationships. If you want to treat

Java 8 or 11?

2021-01-05 Thread Andy Seaborne
Currently, Jena is compiled to run on any JVM from Java8 onwards. Java8 was released March 2014. Java11 (Sept 2018) is LTS (long term support) Java17 (due Sept 2021) is probably going to be LTS. Should Jena switch to Java11 going forward? This message is to ask: Are there deployments that do

Re: No Improvement In Performance with indexing in Jena Fuseki

2021-01-05 Thread Lorenz Buehmann
Ok, thanks for sharing the spreadsheet. We need more configuration infos: dataset, Fuseki configuration, number of results of the query. We didn't get  the attachment of the assembler config. With no optimizer used, the text:query triple pattern should be evaluated first - and depending on the

How to index different types of RDF file in one data set

2021-01-05 Thread 李惠玲
Dear Sirs, Our project implemented Jena Fuseki server (3.18.0, SNAPSHOT version) and using Lucene (7.7.x) as fulltext search engine. Right now, there are two types of RDF files in our triple store, one is “PersonalName”, the other is “Topic”, when we separate them to different data set, two