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https://issues.apache.org/jira/browse/JENA-733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14047107#comment-14047107
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Benno Willoweit edited comment on JENA-733 at 6/29/14 12:02 PM:
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Hi,
I did a bit of debugging with attached sources (sorry, should have done this
straightaway) and found that this is not an ARQ problem. Actually, when
creating a typed long literal in Jena you end up with an Integer object in the
model if the number fits in the integer range. At line 467 in
{{com.hp.hpl.jena.datatypes.xsd.XSDDatatype}} there is a static function
{{suitableInteger(long number)}} which casts the value to an int if it fits
into a 4 bytes and returns the integer wrapper class. So this is obviously done
on purpose but it's not consistent with what {{literal.getDatatype()}} returns.
And I honestly think it's a bad feature :)
For the record, my testing sample (eclipse project) is on bitbucket:
https://[email protected]/kolchose0711/jenalongint.git
was (Author: willow):
Hi,
I did a bit of debugging with attached sources (sorry, should have done this
straightaway) and found that this is not an ARQ problem. Actually, when
creating a typed long literal in Jena you end up with an Integer object in the
model if the number fits in the integer range. At line 467 in
{{com.hp.hpl.jena.datatypes.xsd.XSDDatatype}} there is a static function
{{suitableInteger(long number)}} which casts the value to an int if it fits
into a 4 byte signed value and returns the Integer wrapper class. So this
obviously done on purpose but it's not consistent with what
{{literal.getDatatype()}} returns. And I honestly think it's a bad feature :)
For the record, my testing sample (eclipse project) is on bitbucket:
https://[email protected]/kolchose0711/jenalongint.git
> Long typed literals in query results are returned as integers
> --------------------------------------------------------------
>
> Key: JENA-733
> URL: https://issues.apache.org/jira/browse/JENA-733
> Project: Apache Jena
> Issue Type: Bug
> Components: ARQ
> Affects Versions: Jena 2.11.2
> Reporter: Benno Willoweit
> Priority: Minor
>
> This is my first bug report ever so I hope I get this right. When retrieving
> query results with ARQ, long values are returned as Integers:
> {{QuerySulution qs;}}
> {{Literal l = qs.getLiteral("myVar");}}
> {{l.getDatatype().getJavaClass(); //returns java.lang.Long which is correct}}
> {{l.getValue(); //returns a java.lang.Integer object but it should return a
> java.lang.Long object according to the docs}}
> I have this problem with ARQ 2.11.2 which does not exist in the "affects
> version" drop down.
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