Re: [m2] Archetype Plugin parameters and templates

[Jason Melnick <ja...@iname.com>]

maven-archetype-quickstart source has no velocity templates - and neither do
any of the other projects of the maven-archetype-bundles. Is the archetype
plugin not extensible via new archetype-bundles?


allan ramirez-4 wrote:
> 
> 
> Eric Jacob wrote:
> 
>>Hi Jason,
>>
>>Thanks for your fast answer. However, I took a look at the "
>>maven-archetype-quickstart-1.0-alpha-3.jar" in my local repository and I
saw
>>no velocity templates... Here where I looked:
>>
>>%USER_HOME%\.m2\repository\org\apache\maven\archetypes\maven-archetype-quickstart\1.0-alpha-3
>>  
>>
> 
> If you have the source copy,  you can able to see that 
> maven-archetype-quickstart is a velocity template.
> 
>>Is it possible to provide a sample or a link to a velocity template on the
>>online source repository?
>>  
>>
> 
> Im not really sure about this, but I think its not possible.
> 
>>Thank you in advance,
>>
>>Eric
>>
>>On 9/27/05, Jason van Zyl <ja...@maven.org> wrote:
>>  
>>
>>>On Mon, 2005-09-26 at 21:49 -0400, Eric Jacob wrote:
>>>    
>>>
>>>>Hi,
>>>>
>>>>The M1 Genapp plugin offers the possibility to define custom parameters
>>>>      
>>>>
>>>and
>>>    
>>>
>>>>templates... So here my questions about the M2 Archetype plugin:
>>>>
>>>>(1) Does it offer the same possibilities?
>>>>      
>>>>
>>>Yes, the templates for a archetype are actually velocity templates so
>>>more flexible then what's in genapp.
>>>
>>>    
>>>
>>>>(2) Is it possible to prompt the user for the parameter's value?
>>>>      
>>>>
>>>Archetypes were designed to do that. The parameters can come from
>>>anywhere as long they end up in a Map. The Map is used when rendering
>>>the velocity templates to parameterize the output.
>>>
>>>I would like to do more work on the archetypes in order to provide some
>>>metadata about the parameters for a particular archetype so that better
>>>UI tools can be made. But even with that being the case there is reason
>>>why you couldn't make a UI for the generation of a project from an
>>>archetype.
>>>
>>>    
>>>
>>>>(3) Where should I start to build my own template?
>>>>      
>>>>
>>>You can look at the existing archetypes which are simply JARs that
>>>contain velocity templates and some metadata about what is actually in
>>>the archetype. I will add some doco to the getting started guide about
>>>archetypes as I think there is little known about them but they are
>>>going to be highly useful.
>>>
>>>If you follow the current getting started guide and create a project:
>>>
>>>m2 archetype:create -DgroupId=com.mycompany.app -DartifactId=my-app
>>>
>>>This will actually download the archetype to your local maven repository
>>>and you can take a look at it. It will be in:
>>>
>>>$repo/org/apache/maven/archetypes/maven-archetype-quickstart/1.0-alpha-3
>>>
>>>    
>>>
>>>>(4) Finally, how to add a specific "script/behaviour" to a template in
>>>>      
>>>>
>>>M2?
>>>
>>>The templates are velocity templates so you get the directives that
>>>velocity provides and you can make your own velocity macros or tools. A
>>>tool is simply a Java object that you drop into a velocity context so
>>>you can really do whatever you want. I would think velocity itself would
>>>give you enough flexibility.
>>>
>>>    
>>>
>>>>Thanks,
>>>>
>>>>Eric
>>>>      
>>>>
>>>--
>>>jvz.
>>>
>>>Jason van Zyl
>>>jason at maven.org <http://maven.org>
>>>http://maven.apache.org
>>>
>>>In short, man creates for himself a new religion of a rational
>>>and technical order to justify his work and to be justified in it.
>>>
>>>-- Jacques Ellul, The Technological Society
>>>
>>>
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>>>
>>>
>>>    
>>>
>>
>>  
>>
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>>
> 
> 
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