Re: [tycho-user] "New generated files with Tycho 1.5.1."

[Lars Vogel <lars.vogel@xxxxxxxxxxx>]

Hi Christoph,

thanks a bunch for this detailed explanation. Very interesting and
also very nice to hear that pomless builds are evolving.

Best regards, Lars

On Tue, Nov 5, 2019 at 6:42 AM Christoph Läubrich <laeubi@xxxxxxxxxxxxxx> wrote:
>
> Hi Lars,
>
> the pomless-build previously required the presence of build.properties
> and used this as a pom-replacement.
>
> the polyglot build extension uses the name of the replacement-pom and
> thus the name 'polyglot.build.properties' in previous versions.
>
> The build.properties approach was a first-attempt to support pomless
> bundel/feature builds but has its limitations, especially if one wasn't
> to extend to other artifacts (products, targets, updatesites and so on).
>
> Thats why the pomless-build module was (nearly) completely refactored in
> 1.5 to support advanced use-cases, separate concerns. Previously all
> work was done in two big classes and some parsing was done twice because
> of this and also some ambiguities could happen.
>
> Now each artifact (bundle, feature, product,/updatesite, target) has its
> own handler and uses the real marker file (e.g. the MANIFEST.MF,
> feature.xml, .product/category.xml, ...) as a replacement pom, so you
> will see different files starting with .polyglot.* now, with two exceptions:
>
> - polyglot requires replacement poms to be a regular (existing!) file,
> not a folder, thus .META-INF_MANIFEST.MF is generated and deleted after
> the build finishes, sadly if you kill the build via Eclipse these files
> are not cleaned up due to [1], I'm confident we can soon celebrate the
> 20th anniversary of that bug
> - polyglot currently ignores all alternative files ending with .xml, see
> [2] (most notable feature.xml and category.xml), so also here a
> temporary file is created, Mickael suggested to add the issue number to
> the file so it is clear for people to see why that was added
>
> So from this exceptions, that are a result of limitations of the
> polyglot build extension and sadly the maintainers are not very eager to
> review/merge bug-fixes, you might see another new file tycho.pom, that
> is generated when you use the new automatic generation of
> module-aggregation files.
>
> Hope this helps to clarify things a bit, If you are interested in the
> whole story/discussion you might want to check out the bug-reports and
> corresponding gerrit reviews for these features here [3] in the "Pomless
> Build" section.
>
> Effectively we now have a real pomless toolset on our hands to build
> full PDE/Plugin artifact source with just one single pom.xml and in I'm
> currently investigating ways how we even can omit that when using
> structured builds.
>
> best regards,
> Christoph
>
>
> [1] https://bugs.eclipse.org/bugs/show_bug.cgi?id=38016
> [2] https://github.com/takari/polyglot-maven/issues/192
> [3] https://wiki.eclipse.org/Tycho/Release_Notes/1.5#New_and_Noteworthy
>
>
> Am 04.11.19 um 21:07 schrieb Lars Vogel:
> > Hi Christoph,
> >
> > Thanks for the answer.
> >
> > It used to be only polyglot.build.properties why these two new files?
> > I also see *.takari_issue_192 generated, for exaple
> > feature.xml.takari_issue_192.
> >
> > What are these?
> >
> > Best regards, Lars
> >
> > On Mon, Nov 4, 2019 at 6:30 PM Christoph Läubrich <laeubi@xxxxxxxxxxxxxx> wrote:
> >>
> >> Hi Lars,
> >>
> >> these are temporary files needed for the polyglot-maven plugin
> >> tycho-pomless builds upon, after the test these are deleted.
> >>
> >> Am 04.11.19 um 17:25 schrieb Lars Vogel:
> >>> Hi,
> >>> using Tycho 1.5.1 I see newly generated files.
> >>>
> >>> test/.META-INF_MANIFEST.MF
> >>> test.polyglot..META-INF_MANIFEST.MF
> >>>
> >>> They are empty. Is it expected to see these files?
> >>>
> >>> Best regards, Lars
> >>>
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> >
> >
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