group_concat and parameters

hi, about the group_concat function I found many posts where we talk about the following parameters: * ROW_LIMIT * PRE * SUFFIX for instance: group_concat (? chapterTitle; separator = " "; pre = " "; suffix = " ") Are they also available in fuseki? thanks

RDFSTAR with jena version 3

Hi, I'm working with an old project developed with java 8. I need to use rdfstar but i can't switch to java 11. I have verified that support exists starting with version 3.16.0 (https://lists.w3.org/Archives/Public/public-rdf-star/2020Aug/0001.html) But the SPARQL Functions don't work:

Re: Re: tdbloader - how to indicate destination graph?

yes, it's all clear thanks! Il 11.04.2022 12:42 Lorenz Buehmann ha scritto: > Ok, but did you understand what I was trying to say? As long as your > data format does have quad data, the TDB loader will assume to load it > into the corresponding graphs defined in the data. And only the

Re: tdbloader - how to indicate destination graph?

Hi, I load triples in RDF Thrift format generated using Jena's StreamRDF2Thrift class. Loading the same triples with the ttl format I have no problems. Il 11.04.2022 07:33 Lorenz Buehmann ha scritto: > There is no error but a warning or do I misunderstand you? > > The problem is that your

tdbloader - how to indicate destination graph?

hi i am using jena-fuseki version 4.3.2 i have a dataset with default graph and another graph: when i trying to run the command: E:apache-jena-4.3.2battdb2_tdbloader.bat -loader=parallel -graph=http://host/graphname1 -loc E:apache-jena-fuseki-4.3.2rundatabasesbatch E:sharedttlcustomer.rt

xloader - jq: command not found

Hi everyone, I am using jena fuseki 4.2.0. I created a dataset "test" and tried to load triples with xloader command. $JENA_HOME/bin/tdb2.xloader --loc /opt/apache-jena-fuseki/apache-jena-fuseki-4.3.2/databases/test /opt/config/materialize/158_0.ttl.gz If I create the dataset first I get

Re: Use command tdbquery

Thanks for the reply. Il 03.01.2022 20:49 A. Soroka ha scritto: > Is it possible for you to make a copy of the database to query offline? > That can be expensive in storage, but it's really the simplest thing to do > in many ways. > > Adam > > On Mon, Jan 3, 2022, 1:09 PM Andy Seaborne

Re: Use command tdbquery

Thanks for the reply. It can be one of the alternatives Il 03.01.2022 19:09 Andy Seaborne ha scritto: > On 03/01/2022 17:44, robert.ba...@tiscali.it [2]wrote: > >> Hi, you are right, I was not clear in the request. I try to explain myself better. I have a knowledge base of over a billion

RE: Use command tdbquery

Hi, you are right, I was not clear in the request. I try to explain myself better. I have a knowledge base of over a billion triples. I am testing a query that returns about 2 million results (in the future I will have many queries that will return a lot of data) On the client side I have to

Use command tdbquery

Hi, i am using a fuseki server and need to run a query which returns a lot of results. The use of the HTTP call (http: // localhost: 3030 / ds / query = myQuery) is very slow and inefficient. I thought about using the tdbquery command. But I don't want to stop fuseki. Is there any way to do

OpenJdk, AdoptOpenJDK

Hi, I would like to upgrade to the OpenJdk version of Java. I have always used the Oracle Java one on older versions of Jena. For Jena 4.3.1 there may be contraindications to using OpenJdk or AdoptOpenJDK? Con Tiscali Mobile Smart 70 hai 70 GB in 4G, minuti illimitati e 100 SMS a soli

Re: Upload large datasets to fuseki

Thanks for the reply. The data model is relatively simple, dealing with transactions of goods and user data. I will wait for the next release of Jena. When is it scheduled? Il 06.12.2021 14:49 Andy Seaborne ha scritto: > I guess the end of loading with your setup was very slow. > >

Re: Use LIMIT/OFFSET

Thanks for the reply Il 06.12.2021 14:31 Rob Vesse ha scritto: > Assuming the queries and the underlying data storage used remain the same then Jena will likely generate results in a consistent manner > > BUT you should never rely upon this. The only way to guarantee the behaviour you want

Use LIMIT/OFFSET

Hello I have to use limit and offset on a sparql query run on Jena Fuseki to get paginated results. But reading the w3c documentation I find: _"OFFSET CAUSES GENERATED SOLUTIONS TO START AFTER THE SPECIFIED NUMBER OF SOLUTIONS. AN OFFSET OF ZERO HAS NO EFFECT._ _USING LIMIT AND OFFSET TO

Upload large datasets to fuseki

Hello, I have to upload 3 billion triples to Jena Fuseki. I tried using the following command with a first dataset (0.ttl.gz 1.ttl.gz => 750 million triples): tdb2_tdbloader.bat --loader = parallel --loc datasetX 0.ttl.gz 1.ttl.gz. Loading took about 8 hours to upload 750 milion. The system