Hi, I'm hoping you can save me another ferret around the source - is it possible to somehow set the default namespace used in a writer? I've tried - ...
Hi, I intend to use Jena for my study on semantic web. The backend storage of choice is Berkeley DB. Is there any step-by-step guidance to setup Berkeley DB...
... Not really, but it is pretty straight forward. We do not distribute a binary version of Berkeley DB for licensing reasons. So: 1) Download berkeley DB 2)...
1725
David Sitsky
sits@...
Nov 3, 2002 9:51 pm
... I found that you needed to download version 3.3.11 of Berkeley DB in order to make it work. There have been some minor API changes in versions >= 4.0,...
Hi, Allright, I've been able to use Jena for some simple stuffs in the tutorial :), MemModel, RDBModel (mysql, mm_generic). ... I'm a journalist for...
... I have an experimental system with similar use requirements; The system receives messages or files over time, containing RDF models, an I need to store...
... That should read "time ordering _of_ triples", of course. 8-) David. -- /d{def}def/u{dup}d[0 -185 u 0 300 u]concat/q 5e-3 d/m{mul}d/z{A u m B u ...
Over the summer, the Jena team (well Chris and Jeremy actually) have been prototyping a new version of Jena to provide: o support for RDFCore WG latest...
I have 3 files DAML: domainOntolgy.daml, documentOntology.daml, documentInstances.daml. In the domainOntology.daml, there is a relation, and the range of this...
1731
David Sitsky
sits@...
Nov 5, 2002 3:30 am
Hi all, I have been doing some experiments with the BerkeleyDB model using the following guts of the program below. I initially ran the program with startI...
Hi David, This doesn't look like its going to be that easy to track down :( But I guess we might as well get started. This is the largest BDB database I've...
Hi, Thanks Danny. Now I have another question: about the back-end storage. I see that Jena comes with DDL for several RDBMS, and I can store my models there. ...
1735
David Sitsky
sits@...
Nov 6, 2002 7:22 am
Hi Brian, I suspect it was a silly mistake on my part - I wasn't closing the model (as you can see in the code in the previous message), and therefore, Java ...
... Hmm, I need to have another look at the bdb code. I'm not happy that forgetting to close a model leaves the database corrupt. I should at least be able...
... Yes. The jena configuration files define a set of RDBMS tables which will hold the triple data, you don't need to create any tables yourself. The jena RDB...
Dear All, Can you tell me how to get properties of an Intersection, which contains a named class and 3 Restriction? Ex: - <daml:Class rdf:ID="Antenna"> ...
Thanks. That is another interesting usecase for this "triple -> source model" mapping requirement. You are right that reification would work for this case but...
Hi all, When trying to serialize a model I've created I get this exception: com.hp.hpl.mesa.rdf.jena.model.RDFError: java.lang.RuntimeException: Internal error...
I haven't a clue about the back end storage of Jena, fortunately Dave seems to have covered it pretty darn thoroughly. There also a (rather aged) survey of RDB...
Something that occurred to me post script - will the current RDB table structure be used in Jena 2?...
1745
David Sitsky
sits@...
Nov 7, 2002 7:42 am
... Yes, unfortuantely that's not how Berkeley DB works, especially when you aren't running with transactions. If we got the model working with transactions...
1746
Wagner,Harry
wagnerh@...
Nov 7, 2002 2:39 pm
Hi Dave, I'm upgrading from 1.3 to 1.6 and am wondering if the (postgres) db schema changed between releases? Is there any benefit/requirement to reloading...
... Hash: SHA1 Hi, I'm pleased to announce the first release of BrownSauce, an experiment in browsing generic RDF: <http://Brownsauce.Sourceforge.Net/> ...
Hi Harry, The schema did change but old databases should continue to work just fine with exactly their original behaviour. The database includes a table which...
... Hi there. Sorry for delay in responding. We saw something like this recently. The cause was having property URI's that can't be written as RDF/XML, e.g....
... No problem about the delay. I left the code to itself for a bit and when I came back to it I saw that I was creating Resources like this: Resource r=new ...
