First off, I haven't done a lot of Maven plugin development, so take
this with a grain of salt.
I don't believe this error is simply due to the fact that you're
trying to pass a string value into a File property. I think its also
because your mojo is expecting an array of files.
Other people have asked how to pass in an array of values from the
command line on this list, and the general response was "you just
can't".
So I'd just plan on putting all your file values etc in the pom.xml
file itself for this mojo, and not trying to pass the properties thru
the command line.
Wayne
On 4/18/06, Beyer,Nathan <[EMAIL PROTECTED]> wrote:
> I'm building a Maven 2 Plugin (as a MOJO) and I have a parameter that's
> a java.io.File array and I'm trying to figure out how I would create an
> expression for passing this as a system property. Currently, the
> parameter is configured as follows.
>
> /**
> * <p>
> * The list of report file paths (relative to the project root).
> * </p>
> *
> * @parameter expression="${reportPaths}"
> * @required
> */
> private File[] reportPaths;
>
>
> The parameter will get setup as I expect (an array of File instances)
> when I use either of the following configurations in a POM.
>
> <configuration>
> <reportPaths>
> <reportPath>test_report_1.xml</reportPath>
> </reportPaths>
> </configuration>
>
> <configuration>
> <reportPaths>
> <java.io.File>test_report_1.xml</java.io.File>
> </reportPaths>
> </configuration>
>
> How would I setup this parameter via a System Property on the command
> line? I've tried a couple of things, like the following, but I get an
> error about not being able to assign the entry because the input is a
> String and the expected class is a File[].
>
> mvn mygroup:myartifact:mygoal -DreportPaths=test_report_1.xml
>
> Additionally, I've tried changing the type to an ArrayList and can setup
> the parameter via the POM, but I still can't get the system property to
> parse anything.
>
> Any suggestions? Are there any documents for plugin development that are
> more detailed than the Mojo API, the development mini guide and the
> configuring a plugin mini guide? I've tried searching, but I haven't
> found much.
>
> Thanks.
>
> -Nathan
>
>
>
>
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