... The ... If I established the JDBC connection directly and passed it in to DBConnection, it then worked. Not sure why DBConnection (using url, user,...
Hi Shelley, Sorry to be so slow. I've been on holiday and not checking email - what luxury! The exception is from the SQL layer rather than Jena itself which...
Useful comments - thank you. I'm copying this response over to jena-dev as well, which is the better place for Jena-specific discussions. The first point to...
hi! writing the model to a file is very similar to writing it on the screen. You can do this by using a file output stream. For example, the following...
OK,many thanks for your help.It works in my program. Best Regards. Armin Wrobel <awrobel15@...> wrote: hi! writing the model to a file is very similar...
Dave, ... full ... Using full reification is not an option, unless we reified EVERY statement in an application. That's because we cannot decide apriori which...
Hi, dear all I'm new to this mailing list. Please help me on the following urgent question about JENA 1.6.0. Please take a look at my question and Seaborne's ...
At 01:53 07/01/2003 -0800, you wrote: [...] ... Have you tried it? I don't think you'll find it throws an exception. One way to think of this is that...
... Agreed, I understand that, and am well aware of how commonly used it is in KR systems. I guess my point is that Jena is not trying to be a general purpose...
... Yes this is substantually the way I do it with Quads. I've capatilized "Quads" because it does not refer to the four triples used by RDF, but rather to...
Hi @ll, I have been working on DAML (especially Jena) more then one year ago! Now I am back... I am happy about that! A lot has changed and it looks DAML is...
Daniel, As I recall, the opendirectory dump needs a few tweaks to turn it into correct RDF. I think there are folks around who have done it and can probably...
Hi, As Brian says the DMOZ data is not quite legal RDF and needs a few tweaks. In particular, the namespace used for rdf is wrong and the RDF elements are not ...
Hi, I have read about the jena-BDB and the jena-RDB! I have not worked yet with this two jena-APIs, I just used the RDQL-API to query DAML+OIL files! So which...
... Yes. (RDQL queries on persistent data is not very fast in Jena1.) You can even issue RDQL quesries from the command line: the source URL is the BDB file...
... Yes, performance is the chief attraction of BDB, performance both in terms of data loading and retrieval. MySQL can come close to BDB for some queries but...
... So that means if the performance is not the most important issue I should better use the jena-RDB and MYSQL! If I do that I have a loss of performance but...
... I found following rdb-code: ... IConstraints constraints = modelrdb.createConstraints(); constraints.addSubjectConstraint(foo) .addPropertyConstraint(prop)...
That is using the RDB specific interface - its not RDQL. Try the "not match" regular expession operator in RDQL: SELECT ... WHERE (<foo's URI>, <prop's URI>,...
... Not the way Jena uses it, at least not on the scale of data we use and the load levels we play with. The issue is that Jena currently passes the Model API...
... I would also remind folks of the point Dave made in an earler message, that the current BDB is not efficient in terms of storage, it stores each triple 3...
Hello. I'm in the process of updating W3C's RDF Validator [1] which uses ARP as its RDF parser. In Jena 1.6.0's readme file, it is written that ARP is...
... But there is a statement. You have created a statement stating the type of the resource. ... Resource r = damlModel.createInstance(damlclass, uri); ...
A very nice summary of the statements v. stating issue is in http://ilrt.org/discovery/2000/11/statements Near the end, three positions are layed out: (1)...
Hi again, Okay, all that sound clear to me! Questions: -But I really do not see why RDB is using an own query language? -Why isn't it working with RDQL? -I...
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