Hi Rya folks!
Rya looks very nice, from what I've seen so far (especially the Accumulo
summit recordings). We're currently evaluating different triple stores for
our use case.
We have a use case in which we need to receive ordered SPARQL results. Take
this as an example:
ex:Message_1 a ex:Message ;
ex:number 1 .
There are 1 billion of these statements in the db. We need to get the
Messages with the highest number in batches of 100.
Now if we run:
SELECT ?message ?numberWHERE {
?message a ex:Message ;
ex:number ?number .}ORDER BY DESC(?number)LIMIT 100OFFSET 0
It takes quite a long time on most triple stores.
How would Rya perform on sth like this? To be honest I don't understand yet
how Rya handles datatype properties that are strongly typed, e.g. all
xsd:integer. Can it make use of the natural order of integers?
Almost the same question would be asked for max() aggregations...
Thank you so much for your help,
Johannes
