Hi Andy, I tried the development version of Jena 2.5.7 and it solved my problem :-) - I am able to create and read models from MS-SQL DB. Do you have an...
... custom ... and ... Yes, i understand that and i read this document a few weeks ago Things start to become much clearer for me, I hope this post is also ...
... Linked data and "little inferences" are perfectly compatible. It is just that some of the linked data work is more likely to make use of ontologies which...
Greetings! I would like to add a WHERE expression to a base SPARQL query. E.g. this expression LET (?rand := my-fn:Rand())} So a base query like this select...
... I just hacked together something here: <http://code.google.com/p/caboto/source/browse/#svn/trunk/Caboto/caboto/src/main/java/org/caboto/filters> the basics...
... [hit 'send' to early] Element toAdd = new ElementAssign( Var.alloc("rand") , new E_Function( myFnNamespace + "Rand", new ExprList() ); I'm not 100% sure of...
Thanks for this Dave, it makes more sense now. Of interest, do you know the theoretical complexity (time and or space) for the backward engine in Jena. Or do...
Hello I'm extending GraphBase calling and tried calling the super.constructor with the three different ReificationStyleS. I expected ReificationStyle.minimal...
Reto Bachmann-Gmür
reto@...
Dec 1, 2008 1:55 pm
37166
... ElementWalker? Applies an ElementVisitor over the whole of a syntax expression. But t can only mutate structures, which is error prone. The Support for...
Everything in SPARQL synatx fits into a group (roughly, the {} markers). ElementGroup has "addElement(Element)". Not also that you may be better off working...
... Sorry not really. Jena is a highly simplified implementation of the SLG-WAM architecture behind XSB (among the massive simplifications being no support...
... Excellent - thanks for trying that out. ... I think it's the BIN ones that work (I have recently upgraded to MS SQL Server 2008 on my development machine...
Ahh ok. Yes I am also trying to run some sample programs etc to get a feel for performance. Of course by looking for the theoretical complexities this would...
Hi, I'm new to the list, so first of all, I would like to appreciate what a great software Jena/ARQ/LARQ/TDB etc. is! I've been experimenting with LARQ and I...
The Jena Reasoner Specification seems to provide categories of rules to be used to accomplish various kinds of OWL or RDFS rules-based reasoning. It seems like...
Hello all, The ARQ assignment extension works weird with two assignments in line. Let's consider this example: SELECT * { LET(?var1 := "Hello"). LET(?var2 :=...
Hello, I try to use OWL, Pellet and Jena to retrieve valid Classes/Individuals for a specific ObjectProperty of a specific Class/Individual. Is there any...
... Note: .execSelect does not execute a query to completion. It starts an execution. With TDB, which internally is streaming, each nextSolution causes some...
... It was a bug. It is fixed in ARQ 2.4 and 2.5.0 (which are post-Jena 2.5.6 which has ARQ 2.3 in it). ... FILTER works with assigned variables (after the...
I saw this today in an example at http://wiki.foaf-project.org/UsingBasedNear <geo:Point geo:lat="41.8833" geo:long="12.5"/> It that the same as this? ...
... At the risk of sounding like a broken record, isn't the question 'why could it matter?'. It's the same three triples, regardless. ... are you parsing the...
... (I'll agree in passing with James Howison's why-does-it-matter.) The answer, my friend, is blowing in the IO howto (doc/IO/iohowto.html in the download),...
... That depends on what you mean by "valid". You should read the "Presenting RDF as frames" document (which is in doc/howto/rdf-frames.html in the Jena...
Last thing then :-) Are there any flags or anything that I can set so that the backward engine uses less memory, I do not mind if in turn it takes longer. So I...
... (Be afraid. Be very afraid.) ... No. `Minimal` means "don't ask, don't care" about any reification triples added or removed to/from the graph by the...
Hi Chris Thanks for (frightening, frightening indeed) reply :) Chris Dollin said the following on 12/02/2008 11:47 AM: ... Ok, misunderstood "minimal", for...
Reto Bachmann-Gmür
reto@...
Dec 2, 2008 11:36 am
37184
So to avoid iterating over the graph, I wrote an implementation of Reifier (attached) that doesn't store any triples and queries the underlying graph to answer...
Reto Bachmann-Gmür
reto@...
Dec 2, 2008 1:21 pm
37185
Reto, Chris, This might be useful: Test suite that only applies to "Standard" that I produced from the full Jena one: ...
... David, The short answer is that Jena does not provide any facilities for this - it's up to the storage or service to do it. It's an area where the...
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