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From "Christopher Maier (JIRA)" <j...@codehaus.org>
Subject [jira] Created: (MASSEMBLY-365) Filtered directory filesets try to include files from ancestor projects in a multi-module build
Date Wed, 19 Nov 2008 19:51:42 GMT
Filtered directory filesets try to include files from ancestor projects in a multi-module build
-----------------------------------------------------------------------------------------------

                 Key: MASSEMBLY-365
                 URL: http://jira.codehaus.org/browse/MASSEMBLY-365
             Project: Maven 2.x Assembly Plugin
          Issue Type: Bug
    Affects Versions: 2.2-beta-2
         Environment: Mac OS X 10.5.5, Java 1.5.0_16, Maven 2.0.9
            Reporter: Christopher Maier
            Priority: Minor
         Attachments: assembly-bug.tar.bz

When interpreting assembly descriptors, it looks like Maven is resolving fileSet directories
relative to where the build was started, rather than relative to the project or module the
descriptor is defined in.  This might cause problems in multi-module builds where a file exists
in the same directory listed in the descriptor, but in an ancestor module.  The attached file
has a small project that illustrates this.  This project has one sub-module, in which an assembly
descriptor is defined.  It declares a {{fileSet}}, using the {{directory}} tag, that points
to {{src/main/shell}}.  There is a shell file here ({{b.sh}}) that is to be included in the
assembly.  There is a also a {{src/main/shell}} directory in the parent project as well, containing
a file ({{a.sh}}) that does not exist in the shell directory of the sub-module.  The assembly
plugin is attached to the package phase.  When the sub-module is built from its own directory,
everything works as expected.  However, if it is built from the parent directory as part of
a reactor build, Maven complains that it cannot find {{a.sh}} in the sub-module's {{src/main/shell
directory}}.

This looks like it only happens if the assembly specifies that the {{fileSet}} be filtered.

There is an easy workaround; instead of setting the directory as {{src/main/shell}}, use {{${basedir}/src/main/shell}}
in the assembly descriptor.  I discovered this behavior when I was transitioning one of my
projects from a single project to a multi-module project, and I left some files behind in
the new parent project.  I'm going to get rid of those eventually, and I realize this is probably
a pathological structure, but this behavior is unexpected and may impact other, less pathological
projects.

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