Re: fast model copy

Does getBaseModel() [1] not work or is this not what need? Lorenz [1] https://jena.apache.org/documentation/javadoc/jena/org/apache/jena/ontology/OntModel.html#getBaseModel-- On 25.01.2018 06:28, Andrew Hunter wrote: > Hi, > > I have an OntModel using simple RDF reasoning, but I have found tha

Re: Spatial query with 'dynamic' dataset

The spatial index is based on Lucene and at least for the textindex updates to the dataset will be reflected automatically. In your case, as you're removing a whole named graph I don't know whether this makes a difference, but it might be the case. It would probably be helpful for the developers to

fast model copy

Hi, I have an OntModel using simple RDF reasoning, but I have found that preparing the model and then copying it into a default, non-reasoning model is much faster for querying. My immediate question: Is there an efficient way of copying an OntModel into a default, non-reasoning model without copy

Re: Concurrency with Jena/GSP

If calling the Jena API, you should put the operations in a transaction, then they are atomic. With Fuseki, each operation is a transaction and is fully safe if TDB or TIM (the in-memory transactional dataset implementation) otherwise it is an MRSW lock so visibility is atomic unless you have some

Re: Fuseki errors with concurrent requests

Also, Here's a link to the fuseki config: https://raw.githubusercontent.com/BuddhistDigitalResourceCenter/buda-base/master/conf/fuseki/bdrc-example.ttl Chris > On Jan 24, 2018, at 17:40, Chris Tomlinson > wrote: > > On the latest 3.7.0-Snapshot (master branch) I also saw repeated occurrences

Re: Fuseki errors with concurrent requests

On the latest 3.7.0-Snapshot (master branch) I also saw repeated occurrences of this the other day while running some queries from the fuseki browser app and with a database load going on with our own app using: DatasetAccessorFactory.createHTTP(baseUrl+"/data”); with for the first model t

Spatial query with 'dynamic' dataset

Hello all, I'm trying to execute spatial queries with jena in the following context: an object's position (lat/long) is updated on a regular basis and I run a query ("SELECT ... spatial:withinCircle()...") to verify whether the object is close to a particular point of interest. I simulate the

Re: Fuseki errors with concurrent requests

And running the test set with 1 concurrent loop, it was repeated 1 times without errors. So error occurs only with more than one concurrent operations. On 24.1.2018 17:40, ajs6f wrote: Please show your code, including Fuseki config. It's hard to diagnose what is going wrong when we don'

Re: Fuseki errors with concurrent requests

Hi, query is posted with curl to :3030/ds This is the error message: SELECT DISTINCT ?s ?p ?o WHERE {   GRAPH {     { ?s dcterms:isFormatOf }     UNION     {

Re: Fuseki errors with concurrent requests

Please show your code, including Fuseki config. It's hard to diagnose what is going wrong when we don't know what is supposed to happen. ajs6f > On Jan 24, 2018, at 10:26 AM, Mikael Pesonen > wrote: > > > Hi, > > I have a test script running 10 concurrent CRUD operations in a loop. After >

Fuseki errors with concurrent requests

Hi, I have a test script running 10 concurrent CRUD operations in a loop. After few operations I get HTTP error 500 and these are in fuseki server output. Am I doing something wrong here? [2018-01-24 17:16:53] BindingTDB ERROR get1(?o) org.apache.jena.tdb.base.file.FileException: ObjectFile

Re: Concurrency with Jena/GSP

Sorry meant to ask, if I POST a large dataset, is it possible that reader gets just some of the triplets but not all? On 24.1.2018 15:25, Mikael Pesonen wrote: I'm using Jena directly with HTTP (curl) and GSP. Are all db opetations atomic? If I PUT large JSON-LD data and read old triplet

Concurrency with Jena/GSP

I'm using Jena directly with HTTP (curl) and GSP. Are all db opetations atomic? If I PUT large JSON-LD data and read old triplets at the same time, is the PUT atomic, so that I either get all old values or all new values? Thanks -- Lingsoft - 30 years of Leading Language Management www.lin