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Classes generated by annotation processors (APT) don't get recompiled incrementally? [message #1772384]

Fri, 08 September 2017 13:32

Cristian Spiescu

Messages: 100
Registered: July 2009

Senior Member

Hi,

I've been using APT in eclipse for quite a while. It's now that I have discovered a really strange issue.

I modify something in a source file (A.java). This source file has an annotation that triggers an annotation processor that re-generates another file (B.java). Everything OK until now. Except the fact that the corresponding binary class (/target/.../B.class) IS NOT recompiled. If I look inside it (e.g. w/ a decompiler), I can see that it didn't change. If I modify manually B.java, or if I do a clean => B.java is compiled correctly.

This is a basic scenario, and I'm quite amazed how I realized this only now. I would like to mention that I use m2e-apt. But from my understanding, this plugin only configures the Compiler/APT settings for me, so that I don't have to go to Project properties, add factory path, etc.

I did test on Eclipse 4.6.0 and 4.7.0. I did not test with a "plain APT" project (i.e. w/o maven).

I guess this scenario should work, right? And my projects have something special that generate this bug? If someone could show me some pointers within the code I could take a look with the debugger.

Thanks a lot in advance!

Regards,
Cristian.

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