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Posted to users@maven.apache.org by Werner Punz <we...@gmail.com> on 2009/10/13 16:17:40 UTC
Maven archtypes and custom parameters
Hello everyone I am new to the maven archetype programming but I ran
instantly into a problem.
I have a custom archetype which should generate some java code
the java file has something like public static String ${myvar}
and I try to generate the code from the artefact via mvn
archetype:create .... -Dmyvar=myValue
but maven then complains:
org.apache.velocity.ReferenceException ${myvar} is not a valid reference.
The funny thin is that the standard parameters are passed down correctly
such as artifactId or groupId
so something like public static String ${groupId}
is resolved correctly.
Does anyone know how to resolve this how to pass down custom parameters
which then later are picked up internally by veclocity?
Werner
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Re: Maven archtypes and custom parameters
Posted by Werner Punz <we...@gmail.com>.
Martin Höller schrieb:
> On Tuesday 13 October 2009 Werner Punz wrote:
>> Hello everyone I am new to the maven archetype programming but I ran
>> instantly into a problem.
>>
>> I have a custom archetype which should generate some java code
>> the java file has something like public static String ${myvar}
>>
>> and I try to generate the code from the artefact via mvn
>> archetype:create .... -Dmyvar=myValue
>>
>> but maven then complains:
>>
>> org.apache.velocity.ReferenceException ${myvar} is not a valid reference.
>> The funny thin is that the standard parameters are passed down correctly
>> such as artifactId or groupId
>> so something like public static String ${groupId}
>> is resolved correctly.
>
> I'm a archetype newbie but I think you should define something like this in
> archetype-metadata.xml:
>
> <requiredProperties>
> <requiredProperty key="myvar">
> <defaultValue>some-default</defaultValue>
> </requiredProperty>
> </requiredProperties>
>
> See also
> http://maven.apache.org/plugins/maven-archetype-plugin/examples/create-with-property-file.html
>
Actually I did that but the templates still do not pick the value up
unfortuntately. Never mind I simply programmed my own tool which does
exactly what I need, since I have to trigger all this outside of maven
anyway it was not a big loss except for a few hours of programming time.
Werner
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Re: Maven archtypes and custom parameters
Posted by Martin Höller <ma...@xss.co.at>.
On Tuesday 13 October 2009 Werner Punz wrote:
> Hello everyone I am new to the maven archetype programming but I ran
> instantly into a problem.
>
> I have a custom archetype which should generate some java code
> the java file has something like public static String ${myvar}
>
> and I try to generate the code from the artefact via mvn
> archetype:create .... -Dmyvar=myValue
>
> but maven then complains:
>
> org.apache.velocity.ReferenceException ${myvar} is not a valid reference.
> The funny thin is that the standard parameters are passed down correctly
> such as artifactId or groupId
> so something like public static String ${groupId}
> is resolved correctly.
I'm a archetype newbie but I think you should define something like this in
archetype-metadata.xml:
<requiredProperties>
<requiredProperty key="myvar">
<defaultValue>some-default</defaultValue>
</requiredProperty>
</requiredProperties>
See also
http://maven.apache.org/plugins/maven-archetype-plugin/examples/create-with-property-file.html
hth
- martin