OK, I can see why, from comparing it with another simpler mapping that works.
I was using a mapping generated with the D2RQ command line tool. The d2rq:class entries did not correspond with the schema classes. In TBC, you can still see the instances (subclass of rdfs:Resource, not owl:Thing), but not in Ensemble. When the d2rq:ClassMap is correctly associated with the schema type, the views in Ensemble work correctly. I'm guessing this is intended behaviour! I am finding it quite hard going with d2rq, as I find I need to edit the maps by hand, partly because the Oracle databases require me to hack the schema owner, also because I prefer N3 files (play nice with Subversion). Still, I'm collecting good practice as I go, and this is the first time I now have some corporate data visible through Ensemble!! Thanks Peter 2009/12/3 Scott Henninger <[email protected]> > Peter, you should have no problem displaying data from any back-end > using Ensemble, including D2RQ mappings. Perhaps you chose the schema > file instead of the -Test file? Also try clicking on a class you know > has instances and see if they show up in the results grid (Default > Application). Failing that, how large is the data store? I can't > think of what else could be causing a problem, so any additional > information will help. > > -- Scott > > On Dec 3, 6:21 am, peter <[email protected]> wrote: > > Hello, I'm sure you can help, I must be missing something simple. > > > > I'm using TBC-ME 3.2.1 in trial. I have created a number of mappings > > using D2RQ and I can browse the relational data from within TBC. I > > though this data would be automatically visible by accessing the same > > ontology through the default application in Ensemble. But I see only > > the class tree, no instances. This is true even if I first open the > > ontology in TBC. > > Must I do something else to make the underlying relational data > > accessible this way, or is this not intended or recommended? > > > > Peter > > -- > > You received this message because you are subscribed to the Google Groups > "TopBraid Composer Users" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]<topbraid-composer-users%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/topbraid-composer-users?hl=en. > > > -- http://www.linkedin.com/in/peterjamesward -- You received this message because you are subscribed to the Google Groups "TopBraid Composer Users" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/topbraid-composer-users?hl=en.
