CODEWITHSUNDEEP
maven
Jan Stanicek
Jan Stanicek

Reputation: 1281

How to suppress deleting "target" dir on "mvn clean"

Is it possible to suppress deleting default target directory during mvn clean? Current process deletes entire directory with all its content while I need to keep empty dir on delete.

I guess I will be able to set such configiration by using <artifactId>maven-clean-plugin</artifactId>, but still there remains the implicit process of the mvn clean which deletes entire directory anyway.

Upvotes: 0

Views: 440

Answers (2)

Thorbj&#248;rn Ravn Andersen
Thorbj&#248;rn Ravn Andersen

Reputation: 75356

A symbolic link on Linux (as for other Unix-variants) uses its name, not the actual directory to resolve where it points. You can then use ls -P on BSD-variants like MacOS or ls -L on GNU variants (untested) to see what is pointed to.

The information stored in a symbolic link does not get invalidated when target is deleted, so when the directory is created again the symbolic link will work again.

On my Mac:

ravn@freewifi demo % mkdir target; ln -s target t
ravn@freewifi demo % ls -lP t
lrwxr-xr-x  1 ravn  staff  6 30 Jun 18:40 t -> target
ravn@freewifi demo % ls -l t/
total 0
ravn@freewifi demo % rmdir target; ls -l t/
ls: t/: No such file or directory
ravn@freewifi demo % mkdir target; ls -l t/
total 0
ravn@freewifi demo %

The trailing slash is to ensure that the symbolic link is followed (or at least tried to).

Upvotes: 1

Alex
Alex

Reputation: 1639

I assume you can make use of excludeDefaultDirectories: set it to true and manually list the subdirectories you want to purge via filesets. I haven't tested this but it should work. Let me know how it goes.

Upvotes: 1

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