Hi Allison,
yes take a look at Magic Properties
http://spinrdf.org/spin.html#spin-magic
These may not only return multiple "rows" but also multiple variables
per row.
Please take a look at the online material and get back to us if you have
specific follow-up questions.
HTH
Holger
On 4/30/2013 1:01, Alison Callahan wrote:
Hello all,
I would like to be able to define the body of a SPIN function that
returns two variables, e.g.
SELECT ?x ?y
WHERE {
?example test:x ?x .
?example text:y ?y .
}
My question is: if such a function is possible, how are the results
bound when the function is called? In my experience with SPIN I have
written functions that return one variable, and thus the result is
bound to a single variable when the function is called. For example,
if I have a SPIN function called "functionA" where the spin:body is:
SELECT ?a
WHERE {
?example test:a ?a .
}
I would call this function and bind the result as
BIND(:functionA(?aVariable) AS ?returnedA) .
Is it possible to write a similar function that returns two (or more)
variables?
Any help is appreciated!
Alison
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