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Mirror the mojo's injected constructor in the generated v4 factory - #1236
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The factory generated for a Maven 4 API mojo always called the mojo's no-arg constructor, so a mojo using constructor injection built fine and then failed at run time with NoSuchMethodError. The factory constructor now mirrors the constructor DI would pick on the mojo (the @Inject one, else the no-arg one, else the only one), with the same generic signature and annotations, and passes its arguments to super. A mojo with no usable constructor fails the descriptor goal instead. Fixes apache#1229
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Fixes #1229.
The factory generated for a Maven 4 API mojo always called the mojo's no-arg constructor, so a mojo using constructor injection built fine and then failed with
NoSuchMethodErrorwhen the goal ran.The factory constructor now mirrors the constructor DI would use on the mojo: the
@Injectone, otherwise the no-arg one, otherwise the only one. It keeps the generic signature and the constructor and parameter annotations, so qualifiers like@Namedstill apply, and passes the arguments tosuper(...). A mojo with a no-arg constructor and no@Injectconstructor gets the same factory as before. If no constructor can be picked (several without@Inject, or more than one with it), thedescriptorgoal fails with a message instead of producing a plugin that breaks at run time.The new tests build the mojo classes with ASM, so the Maven 4 API isn't needed on the test classpath. I also ran the reproducer from the issue on Maven 4.0.0-rc-7: it fails with 4.0.0-beta-3 and runs with this change.
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