Query bug for large integers
----------------------------
Key: JENA-153
URL: https://issues.apache.org/jira/browse/JENA-153
Project: Jena
Issue Type: Bug
Components: ARQ, Jena
Reporter: Richard Cyganiak
Priority: Minor
ARQ handles small xsd:integers fine, and it handles large xsd:integers fine,
but there seems to be some weirdness going on with integers of ~20 digits:
ASK {FILTER (200000/2=100000)} => true
ASK {FILTER (20000000/2=10000000)} => true
ASK {FILTER (2000000000/2=1000000000)} => true
ASK {FILTER (200000000000/2=100000000000)} => true
ASK {FILTER (20000000000000/2=10000000000000)} => true
ASK {FILTER (2000000000000000/2=1000000000000000)} => true
ASK {FILTER (200000000000000000/2=100000000000000000)} => true
ASK {FILTER (20000000000000000000/2=10000000000000000000)} => ***false***
ASK {FILTER (2000000000000000000000/2=1000000000000000000000)} => true
ASK {FILTER (200000000000000000000000/2=100000000000000000000000)} => true
ASK {FILTER (20000000000000000000000000/2=10000000000000000000000000)} => true
These were all tested in http://sparql.org/sparql.html with an arbitrary target
graph URI.
It works fine again if dividend and quotient are changed to xsd:decimal:
ASK {FILTER (20000000000000000000.0/2=10000000000000000000.0)} => true
I guess this may have something to do with Java's native long being used for
xsd:integers of some size, and BigInteger for others?
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