Backup Jena Without Inferred Data

Hi All, We were seeing performance issues after restoring data from the backup files , upon checking the backup file we found that the inferred data was also being added. Is there any way during backup we remove the inferred data. Backup sample: ===

Re: Representing reciprocal blank node relationships in abbreviated syntax

see also https://www.w3.org/TR/turtle/#unlabeled-bnodes On Fri, 4 Dec 2020 at 20:20, Martynas Jusevičius wrote: > I don't think you can use the [ ] form to create cycles. > > On Fri, Dec 4, 2020 at 8:53 PM Jeffrey Kenneth Tyzzer > wrote: > > > > Hi, Group. > > > > Consider this small model: >

Re: Representing reciprocal blank node relationships in abbreviated syntax

I don't think you can use the [ ] form to create cycles. On Fri, Dec 4, 2020 at 8:53 PM Jeffrey Kenneth Tyzzer wrote: > > Hi, Group. > > Consider this small model: > > a --relates--> b > b --relates--> c > b <--relatedBy-- c > > Note that the b to c relationship is reciprocal. > > I’d like to rep

Representing reciprocal blank node relationships in abbreviated syntax

Hi, Group. Consider this small model: a --relates--> b b --relates--> c b <--relatedBy-- c Note that the b to c relationship is reciprocal. I’d like to represent b and c as blank nodes. Using the label form, it’s seemingly straightforward (I’ve added a couple of additional rdfs:type triples t

Re: Performance regressions in Jena and TDB2

Hi Andy! Andy Seaborne kirjoitti 2.12.2020 klo 13.01: There is no reason I can see why the special case of exactly one "FROM" can't be handled specially. It masks all named graphs but is a rewrite from triples, that will be fine. Right. Is this worth opening a JIRA issue? If you want. It does

Dynamic FROM models?

I'm wondering how to best issue SPARQL queries when the data is structured as follows. I'm seeing some RDF data sets where some of the properties name other RDF models that contain other data.  For example, the OSLC property oslc_cm:cmServiceProviders has as its object an rdf:resource that is inte

Re: Tried to compact a live TDB2 dataset using Lucene engine but failed

Hi - without a config file it's not tpossible to be definitive. A guess - are you applying compact to the text dataset (which may use TDbB2 for storage)? A text dataset may have various different storages. I think you will need to directly expose the TDB2 dataset and send the "compact" reques

Re: Tried to compact a live TDB2 dataset using Lucene engine but failed

without seeing the config file it's just a guess, but did you use TDB or TDB2? Please share the config file. Minor: there is no 3.18.0 release unless you're using the SNAPSHOT version for whatever reason. On 04.12.20 10:45, 李惠玲 wrote: > Our project implemented Jena Fuseki server (3.18.0) and usi

Tried to compact a live TDB2 dataset using Lucene engine but failed

Our project implemented Jena Fuseki server (3.18.0) and using Lucene (7.7.x) as fulltext search engine. As for the doc from jena.apache.org, it's possible to run a live compaction on TDB2 dataset, which we tried to do, but we got error

Re: A seemingly simple question for beginners

Hello, Attachments are not allowed on this list, so we cannot see any screenshot. You could share links to those screenshots via common free cloud solution. We also don't know your data, so we can't judge if your second query does match any data. Please double check prefix declarations and URIs.

A seemingly simple question for beginners

Hello, I have a problem when I query in Fuseki in this way: PREFIX : PREFIX rdf: PREFIX rdfs: SELECT * WHERE { ?s ?p ?o. } It can return the results like this: but wh

Re: Jena Performance Issue with Reasoner

On 04/12/2020 02:52, Sushanth Vaddaram wrote: Thanks Dave. If we go with in-memory dataset, will I be loosing the data between jena restarts? Yes. You can write the data out to a file after computing and reload from that - or write the materialised data to second TDB database and work f