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https://issues.apache.org/jira/browse/LUCENE-4335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13718251#comment-13718251
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Uwe Schindler commented on LUCENE-4335:
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Hi Robert, that was an alternattive way to fix the precommit Task by a more
intelligent approach.
In general my current problem is:
I don't want to setup a fixed JFlex on Jenkins, I want to download it with IVY,
so before resolving this issue we should have a JFlex version available. If
[~steve_rowe] is not able to relaese the version on Maven, we should maybe fork
jflex on Google Code and make a release including the ANT task.
The second problem in: Moman - I dont want to have Mercurial (hg) on Jenkins,
this makes the setup much worse. Python on Windows is terrible already.
Ideally, the sources generated by Python should be converted to a ant <script>
task using jython. This would make setup easier.
> Builds should regenerate all generated sources
> ----------------------------------------------
>
> Key: LUCENE-4335
> URL: https://issues.apache.org/jira/browse/LUCENE-4335
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Attachments: LUCENE-4335.patch, LUCENE-4335.patch
>
>
> We have more and more sources that are generated programmatically (query
> parsers, fuzzy levN tables from Moman, packed ints specialized decoders,
> etc.), and it's dangerous because developers may directly edit the generated
> sources and forget to edit the meta-source. It's happened to me several
> times ... most recently just after landing the BlockPostingsFormat branch.
> I think we should re-gen all of these in our builds and fail the build if
> this creates a difference. I know some generators (eg JavaCC) embed
> timestamps and so always create mods ... we can leave them out of this for
> starters (or maybe post-process the sources to remove the timestamps) ...
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