In the early days before @component was used, you had to use expression.
See
http://www.sonatype.com/books/mvnref-book/reference/writing-plugins-sect-mojo-params.html
for example
In that case it is very useful to have readonly.
-Robert
Op Sat, 19 May 2012 22:44:13 +0200 schreef Hervé BOUTEMY
<herve.bout...@free.fr>:
the more I look at readonly, the mess I understand what it is intended
to do.
If default-value is properly used, i don't see why we would mark a
parameter
as readonly: simply leave it without property (or expression)
What am I missing?
Regards,
Hervé
Le mardi 15 mai 2012 10:20:00 Brett Porter a écrit :
I think these are both good ideas.
There's a couple of things expression currently supports that probably
shouldn't be supported under "property" to avoid confusion: -
${project.*}
as these should be specified under a default-value (they can't be
overridden by -Dproject.XXX, etc.). - ${settings}, ${session}, etc. -
Maven
internal variables. It would be good to have some other way to describe
them that is not @parameter, and can avoid the need for the redundant
@readonly and @required they usually come with
Looking at that, it actually seems like readonly and required belong as
attributes of @parameter now too.
- Brett
On 14/05/2012, at 5:59 AM, Hervé BOUTEMY wrote:
> As discussed previously, there was some interest in changing supported
> tags.
>
> Now that Java 5 annotations support is ok, I already added some
change in
> MPLUGIN-194 [1]: you can remove ${ } when defining parameter
expression
>
> I just created MPLUGIN-196 issue [2] to rename "expression" to
"property",
> where ${ } would even not be supported
>
> Please comment: any objection? any better idea?
>
> Regards,
>
> Hervé
>
>
> [1] https://jira.codehaus.org/browse/MPLUGIN-194
>
> [2] https://jira.codehaus.org/browse/MPLUGIN-196
>
>
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br...@apache.org
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