arne-bdt opened a new pull request, #3324:
URL: https://github.com/apache/jena/pull/3324
COALESCE function previously showed poor performance compared to
IF(BOUND(...), ..., ...) pattern
GitHub issue resolved #3323
Pull request Description:
COALESCE now checks if a variable is bound before evaluating it. This avoids
creating an exception for each unbound variable, which previously impacted
performance.
Added shadedJena550 and `org.apache.jena.sparql.expr.TestCoalesce` to
implement benchmarks and evaluate the performance impacts.
----
- [x] Tests are included.
- [x] Commits have been squashed to remove intermediate development commit
messages.
- [x] Key commit messages start with the issue number (GH-xxxx)
By submitting this pull request, I acknowledge that I am making a
contribution to the Apache Software Foundation under the terms and conditions
of the [Contributor's
Agreement](https://www.apache.org/licenses/contributor-agreements.html).
----
See the [Apache Jena "Contributing"
guide](https://github.com/apache/jena/blob/main/CONTRIBUTING.md).
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