[Mulgara-general] Help
Bill OConnor
wtoconnor at gmail.com
Mon Jul 28 16:03:17 PDT 2008
That is probably were I am don't know what I am doing. I thought server1
could be arbitrarily
chosen. I suppose that is defined in a config or something?
thanks,
bill
On Mon, Jul 28, 2008 at 3:47 PM, Paul Gearon <gearon at ieee.org> wrote:
> OK, it was pointed out to me that each of the content handlers is
> checked to see if it can handle any given file. I was under the
> impression that you wouldn't see a message in the normal case.
>
> A question I had when I wrote last time was about the server name you
> were using. Have you set the server to use a name of "server2"? The
> default is "server1", though it can be changed easily.
>
> Paul
>
> On Mon, Jul 28, 2008 at 5:38 PM, Paul Gearon <gearon at ieee.org> wrote:
> > Hi Bill,
> >
> > The data you've provided to the load command is a file path without
> > any other info. So the system uses the filename extension to try to
> > work out what kind of data you've given it. In this case, your ".u8"
> > extension was determined to be "mailbox" data.
> >
> > Try renaming the file (or creating a link to it) that uses .rdf as the
> > extension.
> >
> > Regards,
> > Paul
> >
> > On Mon, Jul 28, 2008 at 5:14 PM, Bill OConnor <wtoconnor at gmail.com>
> wrote:
> >> hello,
> >>
> >> I have been trying to get my head wrapped around mulgara and thought
> that I
> >> would try a small experiment.
> >>
> >> I downloaded dmoz constent.rdf.u8 and structure.rdf.u8 and wrote a
> groovy
> >> script to load them into a model.
> >>
> >> I then query the model but I never seem to get any results, probably
> because
> >> I do not understand something
> >> about how mulgara works. Here is the code:
> >>
> >> import java.sql.*;
> >>
> >> // Mulgara packages
> >> import org.mulgara.itql.
> >> ItqlInterpreterBean;
> >> import org.mulgara.query.Answer;
> >>
> >> ItqlInterpreterBean i = new ItqlInterpreterBean();
> >>
> >> String query = "create <rmi://localhost/server2#content>;";
> >> String answerString = i.executeQueryToString(query);
> >>
> >> println answerString;
> >>
> >>
> >> File f = new File("/home/wto/Projects/content.rdf.u8");
> >> URI u = new URI("rmi://localhost/server2#content");
> >> long r = i.load(f, u);
> >> query = """select \$s \$p \$o from <rmi://localhost/server2#content>
> where
> >> \$s \$p \$o;""";
> >> Answer answer = i.executeQuery(query);
> >>
> >> answer.beforeFirst();
> >>
> >> while(answer.next()){
> >> println answer.getObject(0);
> >> }
> >>
> >> The results are:
> >>
> >> <?xml version="1.0" encoding="UTF-8"?>
> >> <answer xmlns="http://mulgara.org/tql#"><query><message>Successfully
> created
> >> graph rmi://localhost/server3#content</message></query></answer>
> >> INFO [main] (MulgaraXAResourceContext.java:84) - Creating
> MulgaraXAResource
> >> INFO [main] (DataInputTx.java:97) - Sending local resource :
> >> file:/home/wto/Projects/content.rdf.u8
> >> INFO [main] (MulgaraInternalTransaction.java:780) - Creating
> Transaction:
> >> 1801334, state=null, inuse=0, using=0
> >> INFO [main] (MulgaraInternalTransaction.java:780) - Finished Creating
> >> Transaction: 1801334, state=CONSTRUCTEDUNREF, inuse=0, using=0
> >> INFO [main] (MulgaraInternalTransaction.java:780) - Executing
> Operation:
> >> 1801334, state=CONSTRUCTEDUNREF, inuse=0, using=0
> >> INFO [main] (MulgaraInternalTransaction.java:780) - Initiating
> transaction:
> >> 1801334, state=CONSTRUCTEDUNREF, inuse=0, using=0
> >> INFO [main] (MulgaraInternalTransactionFactory.java:277) - Beginning
> >> Transaction
> >> INFO [main] (MBoxContentHandler.java:131) - Unable to parse streaming
> >> content in mbox content handler.
> >>
> >> Any help would be appreciated.
> >>
> >> -bill
> >> _______________________________________________
> >> Mulgara-general mailing list
> >> Mulgara-general at mulgara.org
> >> http://mulgara.org/mailman/listinfo/mulgara-general
> >>
> >>
> >
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