Hi Arthur,
I wish you could use TopBraid 4.5 which has this improved ;)
On 2/18/2014 10:32, Arthur A. Keen wrote:
1) Is the intended use in Composer that you only have one graph per
TDB instance?
No you can have multiple named graphs per TDB, but (up to 4.5) you need
to have one connector file (.tdb) for each named graph.
2) If multiple graphs are allowed, and I create multiple named graphs
in a TDB instance, is there a way to switch between these named graphs
in Composer?
Yes, just open their individual .tdb files - assuming they point to the
same data folders.
3) Is INSERT DATA only supported for the default graph, and not into a
named graph?
Probably follows.
BTW the named graph support has already been improved in the upcoming
4.4 release for *SDB*, if that's an option. There, you can access any
subgraph of a given .sdb connector as long as the subgraph starts with
the same URI, e.g. you have
http://example.org/mySDB as a .sdb file
then you can access any
http://example.org/mySDB/mySubGraph1
via SPARQL, e.g. INSERT { GRAPH ?graph { ...
and the same will work for TDB in 4.5 (whenever this comes out).
Meanwhile, create multiple .tdb files.
HTH
Holger
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