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https://issues.apache.org/jira/browse/JENA-512?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Seaborne resolved JENA-512.
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Resolution: Fixed
Fix Version/s: Jena 2.10.2
> SSE Tags are used inconsistently
> --------------------------------
>
> Key: JENA-512
> URL: https://issues.apache.org/jira/browse/JENA-512
> Project: Apache Jena
> Issue Type: Bug
> Components: ARQ
> Affects Versions: Jena 2.10.1
> Reporter: Rob Vesse
> Assignee: Rob Vesse
> Priority: Minor
> Labels: algebra, sse
> Fix For: Jena 2.10.2
>
>
> In some of our more recent code we are trying to map functions into a
> messaging data structure by inspecting the function symbol. However we have
> found that there are some inconsistencies in the symbols.
> Namely that the capitalization and punctuation are not consistent, likely
> this cannot change as it would mean breaking many existing algebra
> examples/tests and systems like ours that use algebra strings internally.
> The more concerning inconsistencies are that some functions report symbols
> without using the tag constants and so some queries written report symbols
> that don't match their tag constants.
> BuilderExpr appears to get around this by doing case insensitive key lookup
> which seems very hacky
> There is also at least one function (isNumeric) which has no Tag constant and
> no SSE builder defined for it so queries containing this cannot be decoded
> from algebra.
> I plan to do two things:
> - Make expression classes return their Tags constant where they don't already
> and particularly in the cases where the two values aren't exact matches
> - Fix the isNumeric case (and any others I discover) where there is no
> registered builder for the symbol
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