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https://jira.codehaus.org/browse/MASSEMBLY-285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=288091#comment-288091
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Eric Daigneault commented on MASSEMBLY-285:
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Either version 2.2.2 of the Assembly plugin has a regression or the issue has
not been fixed. I am currently creating zip files from the assembly that
contains duplicate jar files.
Some background : I am using the assembly to create a zip file of an
application. Why Zip ? because the application requires multiple configuration
files and spans larger than just Java so I cannot use a uber Jar (I would
prefer that but technical limitations out of my control force me otherwise).
This package is built correctly.
To make life simpler I made it possible to extend this package with a project
that can add extra classes (plugins and such) and configuration from a standard
layout in the project that gets picked up by the assembly and merged with the
previous vanilla package. the end result is a fully assembled zip file with
all the customized parts in the right place.
Now, behaviour changed across version wheras previously I would overwrite the
original package with the content of the new one, now I have to start from the
overrides and complete withe the original files. Easily fixed through changing
the order I declared the filesets in the assembly. When using filesets
strictly nothing gets added twice, though the replace was changed to skip which
is a bit counter intuitive.
BUT....
Since I extend some parts of the original system, I will share some
dependencies with this one. These dependencies are already present in the
original package and get added through a file set (I get the package and unzip
it in a temporary folder where I integrate it`s content inthe assembly through
a fileset).
I also add the dependencies of the new customized project, and these get added
twice.
I think there is a regression here when filesets and dependencysets interact
where if files are present in both they get added twice in the zip file. Now I
would re-open this current task but it seems I cannot so I will open a sub task
instead.
> regression: duplicate files added to the assembly
> -------------------------------------------------
>
> Key: MASSEMBLY-285
> URL: https://jira.codehaus.org/browse/MASSEMBLY-285
> Project: Maven 2.x Assembly Plugin
> Issue Type: Bug
> Affects Versions: 2.2-beta-1
> Reporter: Brett Porter
> Assignee: John Casey
> Priority: Blocker
> Fix For: 2.2-beta-3
>
>
> I found that it was possible to add a file twice to the assembly through
> different filesets (a zip file) so that when it extracted it prompted for
> overwrite.
> It should error out or collapse the entries (as 2.1 did).
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