[jira] [Resolved] (JENA-2116) Performance regression in xsd:decimal division.

["Andy Seaborne (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JENA-2116?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Seaborne resolved JENA-2116.
---------------------------------
    Fix Version/s: Jena 4.2.0
       Resolution: Done

> Performance regression in xsd:decimal division.
> -----------------------------------------------
>
>                 Key: JENA-2116
>                 URL: https://issues.apache.org/jira/browse/JENA-2116
>             Project: Apache Jena
>          Issue Type: Bug
>          Components: ARQ
>    Affects Versions: Jena 3.17.0, Jena 4.0.0, Jena 4.1.0
>            Reporter: Andy Seaborne
>            Assignee: Andy Seaborne
>            Priority: Major
>             Fix For: Jena 4.2.0
>
>
> [Report from users@ : 2021-06-04|https://lists.apache.org/thread.html/ra55320e0f0f63364093d100fde3083e73065cab4bdbdcb693f8fe95c%40%3Cusers.jena.apache.org%3E]
> As a result of JENA-1943, Java BigDecimal division will cause an ArithmeticException when then is no exact decimal result. In the report, division by 3 will mean no exact answer.
> But the change in JENA-1943 (arbitray precision for exact answers) is also desirable. Simply having a quite large division precise (e.g. 100) isn't ideal because e.g. {{1/3}} returns {{0.333333333333333333333333}} (precision of 24) currently, not {{0.3333......}} length about 100.
> Also, there is an unnecessary canonicalization of a value that is only used in further calculation so the lexical form isn't needed.



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