But you have to be aware of the downside: You cannot upgrade the
compiler-plugin anymore without creating a new version of your plugin. Any
plugin is loaded once and the first one wins. Nice effects in reactor builds ;-)
walid joseph Gedeon wrote:
> Indeed! Thanks :-)
>
> So, for the summary, here are the steps that provided my solution:
>
> 1) in the pom, added maven-inherit-plugin, as described in
> the plugin
> documentation.
>
> 2) in the mojo, in my case I needed to extend a goal with a
> different name:
> /**
> * @extendsPlugin maven-compiler-plugin
> * @extendsGoal compile
> * @goal custom-compile
> * @phase compile
> */
> public class CustomCompileMojo extends CompilerMojo { //...
>
> 3) in the pom, the dependency requires a type to be specified:
> <dependency> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-compiler-plugin</artifactId>
> <type>maven-plugin</type>
> <version>2.0.2</version>
> </dependency>
>
> I'm thinking all of this (a summary) would be good as an item
> in the "Maven
> Plugins Cookbook"... something like "How to extend an
> existing plugin?"
> What's the accepted way of getting it up there? I wouldnt
> mind writing it.
>
> W.
>
> On Tue, Apr 29, 2008 at 6:49 PM, VELO <[EMAIL PROTECTED]> wrote:
>
>> Try add type to dependency:
>> <type>maven-plugin</type>
>>
>>
>> VELO
>>
>>
>> On Tue, Apr 29, 2008 at 1:46 PM, walid joseph Gedeon
>> <[EMAIL PROTECTED]> wrote:
>>
>>> It seems to want to do what I need... but I can't seem to get rid
>>> of this error:
>>>
>>> [ERROR] BUILD ERROR
>>> [INFO]
>>>
> --------------------------------------------------------------
> ----------
>>> [INFO] maven-compiler-plugin plugin is not a dependency
>>>
>>> eventhough I do have it in my pom...
>>>
>>> <dependency>
>>> <groupId>org.apache.maven.plugins</groupId>
>>> <artifactId>maven-compiler-plugin</artifactId>
>>> <version>2.0.2</version>
>>> </dependency>
>>>
>>> Looking at the code, it seems to also want to allow "compiler", but
>>> tried that too with no luck...
>>> Still digging, but if anyone has an idea, all hints are appreciated
>>> :-)
>>>
>>> W
>>>
>>>
>>> On Tue, Apr 29, 2008 at 6:39 PM, VELO <[EMAIL PROTECTED]> wrote:
>>>
>>>> I use it, works!
>>>>
>>>> VELO
>>>>
>>>> On Tue, Apr 29, 2008 at 11:45 AM, Benoit Decherf <
>>>> [EMAIL PROTECTED]>
>>>> wrote:
>>>>
>>>>> Here is the plugin:
>>>>>
> http://www.ops4j.org/projects/pax/construct/maven-inherit-plugin/
>>>>>
>>>>> Benoit
>>>>>
>>>>>
>>>>> Brian E. Fox wrote:
>>>>>
>>>>>> Plugins can't really be extended. What is most likely happening
>>>>>> is that the metadata that tells plexus what to inject is not
>>>>>> included in your plugin. There is a plugin/tool out there that
>>>>>> supposedly allows you to extend plugins by merging the metadata,
>>>>>> but I forget the name.
>>>>>>
>>>>>> -----Original Message-----
>>>>>> From: walid joseph Gedeon [mailto:[EMAIL PROTECTED] Sent:
>>>>>> Tuesday, April 29, 2008 10:37 AM To: Maven Developers List
>>>>>> Subject: Can plugins be extended?
>>>>>>
>>>>>> Hello all,
>>>>>> After failing to customize the compiler pluging (by passing
>>>>>> <compileSourceRoots /> in the maven-compiler-plugin
>>>>>> <configuration />); I've went onto trying to extend the
>>>>>> maven-compiler-plugin CompileMojo to just set that variable.
>>>>>>
>>>>>> It looks like I've missed something: the injected parameters of
>>>>>> the super classes are not being set (e.g. the parameter
>>>>>> compilerId, or the component compilerManager in
>>>>>> AbstractCompilerMojo are null).
>>>>>> Is there a flag that enables injection of parameters in super
>>>>>> classes? Or is the issue something else?
>>>>>>
>>>>>> Thanks :-)
>>>>>> Walid.
>>>>>>
>>>>>> Note: a component definition maps the custom-compile goal to the
>>>>>> <compile /> phase.
>>>>>>
>>>>>> o====x maven-customcompile-plugin Mojo: x====o
>>>>>> /**
>>>>>> * @goal custom-compile
>>>>>> * @phase compile
>>>>>> * @requiresDependencyResolution runtime
>>>>>> */
>>>>>> public class CustomCompilerMojo extends CompilerMojo { // ...
>>>>>>
>>>>>> /**
>>>>>> * @parameter
>>>>>> */
>>>>>> private List<String> compileSourceRoots;
>>>>>>
>>>>>> protected List<String> getCompileSourceRoots()
>>>>>> {
>>>>>> return compileSourceRoots;
>>>>>> }
>>>>>>
>>>>>> public void execute() throws MojoExecutionException,
>>>>>> CompilationFailureException {
>>>>>> super.execute();
>>>>>> }
>>>>>> }
>>>>>>
>>>>>> o====x Project POM: x====o
>>>>>> <!-- ... -->
>>>>>> <build>
>>>>>> <plugins>
>>>>>> <plugin>
>>>>>> <groupId>fr.gedeon</groupId>
>>>>>> <artifactId>maven-customcompile-plugin</artifactId>
>>>>>> <extensions>true</extensions>
>>>>>> <configuration>
>>>>>> <compileSourceRoots>
>>>>>> <directory>Dev/src/java</directory>
>>>>>> </compileSourceRoots>
>>>>>> </configuration>
>>>>>> </plugin>
>>>>>> </plugins>
>>>>>> </build>
>>>>>>
>>>>>> o====x Partial Trace: x====o
>>>>>> [DEBUG] Configuring mojo
>>>>>> 'fr.gedeon:maven-customcompile-plugin:1.0-SNAPSHOT:custom-compile'
>>>>>> --> [DEBUG] (f) compileSourceRoots = [Dev/src/java]
>>>>>> [DEBUG] (f) project =
>>>> [EMAIL PROTECTED]
>>>>>> [DEBUG] -- end configuration --
>>>>>> [INFO] [bem:custom-compile]
>>>>>> [DEBUG] Using compiler 'null'.
>>>>>>
>>>>>>
>>>>>>> ^ this is from getLog().debug( "Using compiler '" +
>>>>>>> compilerId +
>>>>>>>
>>>>>>>
>>>>>> "'." );
>>>>>>
>>>>>>
>>>>>>> in AbstractCompilerMojo
>>>>>>>
>>>>>>>
>>>>>> [INFO]
>>>>>>
>>>>
> --------------------------------------------------------------
> ----------
>>>>>> [ERROR] FATAL ERROR
>>>>>> [INFO]
>>>>>>
>>>>
> --------------------------------------------------------------
> ----------
>>>>>> [INFO] null
>>>>>> [INFO]
>>>>>>
>>>>
> --------------------------------------------------------------
> ----------
>>>>>> [DEBUG] Trace
>>>>>> java.lang.NullPointerException
>>>>>> at
>>>>>>
>>>>>>
>>>>
> org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractC
> ompilerMojo.java:267)
>>>>>>
>>>>>>
>>>>>>> ^ I suppose this is compiler =
>>>>>>> compilerManager.getCompiler(
>>>>>>>
>>>>>>>
>>>>>> compilerId );
>>>>>>
>>>>>>
>>>>>>> with compilerManager = null
>>>>>>>
>>>>>>>
>>>>>> at
>>>>>>
>>>>
> org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:114)
>>>>>> at
>>>>>>
>>>>
> org.apache.maven.plugin.CompileBemMojo.execute(CompileBemMojo.java:37)
>>>>>> ...
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
