I'm having a problem with anonymous resources, when you need the name of a anonymous resource, you can't call to getURI method because it returns a null, so...
Hi, ... Odd. Is this with the cvs version of jena or with the distributed zip? A few weeks ago I did a couple of updates to the cvs to reduce the work of ...
Is there an equivalent to the sql OR statement when using the constraint method of listing statements. for example: lets say a number of resources have a...
Hi Dave, thanks for the reply. i have played around a little since i posted the message. After reading through some older posts, i found that the finalize ...
David - Sorry for the delay in responding, I've been out of the office for a while. Currently, what you're trying to do is not supported by the Jena DAML API. ...
Magdi - Without a user-specified restriction, the domain of a property is daml:Thing, of which all classes are, explicitly or implicitly, a sub-class. So yes,...
Shri - Providing they expand to the same URI, rdf:ID and rdf:about have the same meaning. At the time when the current outputters were developed, the practical...
... That's a good question. DAML is a Darpa programme that had, at its inception, much broader goals than just an ontology language. However, I'm not sure...
... RDQL is a "pure" application of the Jena core API so it does not go faster (or, hopefully slower) than using a selector unless you do something special for...
... Your instance Hello is an instance of your ASubClass class, so given that it is correct. However, as I wrote wrote in an earlier message [1], although ...
Matthias - To reiterate what Jeremy said, there is no difference between RDF and DAML+OIL syntax. Jena writers output rdf:about in preference to rdf:ID, but ...
for (Iterator i = myDamlModel.listDAMLClasses(); i.hasNext(); ) { DAMLClassExpression dc = (DAMLClassExpression) i.next(); if (dc instanceof DAMLRestriction)...
Hi Marc, You have certainly touched on some problems with Jena and with the RDF specs. The current simple RDF/XML writer does not maintain the anonymity of ...
Thanks Andy, that's helped heaps. In regards to scale initially i would be looking at 1200+ xx type resources (as example below) with each having approx 8...
Hi All, i am wondering if there is currently any means of sorting results from the query. With possibly big results returned it will not be feasible to read...
Lee, RDQL does not buffer the entire the result set - it streams it from the query engine to the application so if the application drops results as they are...
... This is not a supported feature at present. The original idea had been to either replace or augment the monster triple table with separate tables for...
When Jena was first released it used an RDF parser developed by David Megginson called RDFFilter. This parser has not been the default for some time now, but...
Hi everyone, We want to use Jena for managing DAML+OIL and are currently thinking how we could make the model(s) persitent. To save the whole model to a file ...
I am having a problem when I use the "Filters" function in RDQL. This function works well when I filter a literal variable such as: SELECT ?resource WHERE...
Hi there, The string equality operator is "EQ", the string inequality operator is "NE" and they do work on the string appearance of a URI. == is the numeric ...
Thank you very much, Andy. It works rightly now. I know "eq" operator from the Exception message of rdfquery and I try to use it in my query. But it failed...
No problem. ... You can use && and || (and brackets) to write longer filters. You can also use multiple AND clauses (they are &&'ed together) Andy PS Remember...
... Nothing specific, just trying to keep my app reasonably in sync with the specs. I must admit I find it difficult to keep track of wg developments (no fault...
