On 18/01/13 00:36, Charles Li wrote:
Thanks a lot for the help! I can now query the TDB store using Jena Java
API. However, when I tried to use dotNetRDFTools-0.72 and twinkle-2.0 with
the same query, they both complained about no file. Do they only accept
file? I thought someone mentioned TDB-backed store can also be used.
Thanks again!
dotNetRDFTools and twinkle don't understand the file format.
Use Fuseki, a database server, and access with HTTP.
Andy
On Wed, Jan 16, 2013 at 3:25 AM, Andy Seaborne <[email protected]> wrote:
(you probably want the users list [email protected])
On 16/01/13 05:32, Charles Li wrote:
Greeting to eveyone! New to Semantic Web. Trying to Use TDBLoader to load
a
4 GB RDF/XML file.
[OS] Windows 7 - 64-bit
[Jena Version] 2.7.3
[Java Version] 1.6.0_24-b07, 64-bit
[TDBLoader Command] tdbloader.bat -loc bigRDF myRDF.xml
[TDBLoader Command Output]
..............................**..
10:22:56 WARN riot :: {W108} Not an XML Name:
'8961d5a3-2964-4373-b53d-**02c9f2e764f8'
10:22:56 WARN riot :: {W108} Not an XML Name:
'7ff4d865-1693-43ed-8a6e-**368360006b05'
..............................**..
10:23:02 WARN riot :: {W108} Not an XML Name:
'1ef2dfba-30cc-4efa-b20b-**05b45e979649'
10:23:02 INFO loader :: -- Finish triples data phase
10:23:02 INFO loader :: 58,064,426 triples loaded in
1,523.02 seconds [Rate: 38,124.51 per second]
10:23:02 INFO loader :: -- Start triples index phase
10:23:02 INFO loader :: Index SPO->POS: 100,000 slots
(Batch: 203,665 slots/s / Avg: 203,665 slots/s)
..............................**..
10:41:48 INFO loader :: ** Index SPO->OSP: 58,064,426 slots
indexed in 837.14 seconds [Rate: 69,360.14 per second]
10:41:48 INFO loader :: -- Finish triples index phase
10:41:48 INFO loader :: ** 58,064,426 triples indexed in
1,126.68 seconds [Rate: 51,535.68 per second]
10:41:48 INFO loader :: -- Finish triples load
10:41:48 INFO loader :: ** Completed: 58,064,426 triples
loaded in 2,649.71 seconds [Rate: 21,913.51 per second]
Questions:
- Should I worry about the warnings? How can I get rid of the warnings?
Ideally, yes.
They are only warnings, the system will work with them as best it can. It
maybe that the data itself is not formatted correctly.
- The following files are created under the "bigRDF" folder:
GOSP.dat GPOS.dat GSPO.dat OSP.dat OSPG.dat POS.dat POSG.dat
SPO.dat
SPOG.dat journal.jrnl node2id.idn prefix2id.dat prefixIdx.dat
prefixes.dat
GOSP.idn GPOS.idn GSPO.idn OSP.idn OSPG.idn POS.idn POSG.idn
SPO.idn
SPOG.idn node2id.dat nodes.dat prefix2id.idn prefixIdx.idn
stats.opt
and they are all binary. How would I query them? And where can I find
documentation about them?
tdbquery will execute SPARQL queries on the database.
tdbquery --help
http://jena.apache.org/**documentation/tdb/commands.**html<http://jena.apache.org/documentation/tdb/commands.html>
Or any of the Jena API
Dataset ds = TDBFactory.createDataset("**bigRDF") ;
Model model = ds.getDefaultModel() ;
...
Andy
