On Feb 15, 2007, at 8:28 AM, Brian E. Fox wrote:

Is there any objection to pulling some of that into apache? I took a
look and the syntax makes sense. The only change I might make is to use whatever Maven already uses to get the jdk version (if it's not already
the same)

Well, technically its already in apache... in the geronimo project ;-) You mean move it to Maven-proper? Or to plugin under the Maven project? Either way its fine with me as long as the same functionality is there.

FYI, syntax is based off what the Mac OS X java launcher bits use...

--jason


-----Original Message-----
From: Jason Dillon [mailto:[EMAIL PROTECTED] On Behalf Of Jason
Dillon
Sent: Wednesday, February 14, 2007 11:17 PM
To: Maven Developers List
Subject: Re: Control of maven using prerequisites

FYI, docs for that are here:

     http://geronimo.apache.org/maven/genesis/plugins/tools-maven-
plugin/usage.html

Was thinking of moving some of that to a plugin in the mojo project
whenever I find some time...

--jason


On Feb 14, 2007, at 8:12 PM, Joakim Erdfelt wrote:

Check out the geronimo tools-maven-plugin Found at
http://svn.apache.org/repos/asf/geronimo/genesis/trunk/plugins/
tools-maven-plugin/

It is used by the current geronimo for enforcing various minimum
aspects of the build environment.

Example: (from
http://svn.apache.org/repos/asf/geronimo/daytrader/trunk/pom.xml )

            <plugin>
<groupId>org.apache.geronimo.genesis.plugins</ groupId>
                <artifactId>tools-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <id>validate-java-version</id>
                        <phase>validate</phase>
                        <goals>
                            <goal>require-java-version</goal>
                        </goals>
                        <configuration>
                            <version>1.5*</version>
                        </configuration>
                    </execution>
                </executions>
            </plugin>


Enjoy

- Joakim


Brian E. Fox wrote:
So the initial feature list for the "maven-enforcer-plugin" is:
OS, Maven Rev, Jdk Rev. Anything else that might be usefull from a
Configuration Management standpoint? Most other things can already be

controlled via pluginManagement/dependencyManagement...although it
doesn't stop someone from overriding at a local pom level.

-----Original Message-----
From: Jason van Zyl [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 14, 2007 9:56 PM
To: Maven Developers List
Subject: Re: Control of maven using prerequisites


On 14 Feb 07, at 8:42 PM 14 Feb 07, Brian E. Fox wrote:


Now that 2.0.5 is out and more frequent releases are expected, I
think that http://jira.codehaus.org/browse/MNG-2423 is even more
important.
Currently the prerequisites value is not inherited and thus we can't

use it in a company "super-pom" to enforce a minimum Maven version.
My workaround is to create an empty plugin that has a prereq and
include that in the super-pom. This seems kludgey an kind of
unnecessary since there is a field in the pom to do this...it just
only applies if defined in each child pom or when building from a
reactor that contains it. Is there any chance this can get bumped to

2.0.6? I'm willing to try and submit a patch I could get a pointer
where to look.



The prereq is specifically for plugins, or other tools, that need a
specific version of Maven. It was not meant as a means of enforcement

for your development environment. Trying to mix these concerns would
cause problems.

I think what you need is a plugin that runs in the validate phase
(call it the Enforcer Plugins :-) that checks things like jdk
version, mvn version, operating system or whatever else you might
want. Configure this in your parent POM and then you're all set.

Jason.


Thanks,

Brian




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