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Re: [m2e-dev] change in default behaviour of <execute/> mapping 
Take code generation mojo, like maven-modello-plugin. When invoked
during eclipse incremental build, it unconditionally generates output
.java files. This triggers JDT builder to produce .class files. This
triggers new invocation of modello plugin, which unconditionally
generates .java files, which triggers JDT builder produce .class files
and so on.

There are also less obvious scenarios when JDT builder escalates
incremental build to full without telling the other builders about this.

I did talk about this during eclipsecon eu 2012, and there is more info
on the subject, including (lousy) ppt animations of the events.

http://www.eclipsecon.org/europe2012/sessions/m2e-exercise-mixing-oil-and-water


--
Regards,
Igor

On 12-11-30 2:32 AM, Aliaksei Lahachou wrote:

Hello Igor,

could you explain or give an example of situation causing an endless
loop? I think I've seen this behavior a couple of times, but I would
like to know better what's causing it.

Regards,
htfv (Aliaksei Lahachou)

Am 30.11.2012 04:10 schrieb "Igor Fedorenko" <igor@xxxxxxxxxxxxxx
<mailto:igor@xxxxxxxxxxxxxx>>:

    As of m2e 1.2, <execute/> mapping has runOnIncremental=true by default.
    This causes endless builds when <execute/> is used for a mojo that is
    not compatible with m2e incremental workspace build. I am changing the
    default to runOnIncremental=false in 1.3. Projects and maven plugins
    that support incremental build will need to explicitly state so to work
    in 1.3, otherwise they will be only invoked during full/clean build.

    https://bugs.eclipse.org/bugs/__show_bug.cgi?id=395433
    <https://bugs.eclipse.org/bugs/show_bug.cgi?id=395433>

    --
    Regards,
    Igor
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