Andy Seaborne created JENA-2116:
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Summary: 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 4.1.0, Jena 4.0.0, Jena 3.17.0
Reporter: Andy Seaborne
Assignee: Andy Seaborne
[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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