After modifying the source file, the corresponding automatically generated class is not updated

[changchengqin]

Questions

After modifying the source file, the corresponding automatically generated class is not updated.

Version

4.0.0-milestone4

Context

while I used vertx to automatically generate classes such as VertxProxyHandler and VertxEBProxy, I encountered a problem, that is:
when I modify a certain service source code file, the IDE will automatically recompile it, but the corresponding VertxProxyHandler and VertxEBProxy classes have not been recompile.

After debugging, I found that it was caused by this line of code in the process method of the CodeGenProcessor class in the vertx-codgen class library.

As long as classes such as VertxProxyHandler are automatically generated once, unless the entire project is recompiled as a whole or the generated class is deleted, it will not be automatically generated in the future.

Do you have a reproducer?

https://github.com/changchengqin/codegen

Steps to reproduce

1. clone above repo.
2. build
3. modify source file src/main/java/com/example/codegen/service/UserService.java
4. recompile source file src/main/java/com/example/codegen/service/UserService.java

The normal expected result is that UserServiceVertxProxyHandler and UserServiceEBProxy should be updated accordingly, but the fact is not.

Extra

• OS: Windows 10 Enterprise
• JDK: 11 or later
• IDE: Intellij IDEA Community 2019.3.1 or 2019.3.3 or 2019.3.4 or 2020.2

[vietj]

have you tried modifying this project to make it work ?

[changchengqin]

Yes, I tried many times, including using the latest Vertx 4.0.0.beta3 version, the phenomenon still exists.

[vietj]

no I mean, have you tried patching vertx-codegen to make it work

[changchengqin]

Hmm, yes, when I commented these three lines of code in the process method of the CodeGenProcessor class, everything returned to normal.