M2 dependency cause null pointer

[Amund Mortensen <ci...@ostebit.com>]

Hey,
I'm having a problem with M2, hope you guys can help me.
When I run mvn site I get a null pointer exception, mvn compile works  
great.
This is when I got this section in my pom.xml:

<dependency>
	<groupId>log4j</groupId>
       <artifactId>Logger</artifactId>
       <version>1.2.13</version>
       <scope>system</scope>
       <systemPath>/var/maven/shelter/src/main/java/trunk/resources/log4j-1.2.13.jar</systemPath>
</dependency>

When I remove this section, mvn site work great. But mvn compile does not  
work, understanderbli, complains about the log4j package.

So.. What could be the cause of the null pointer?


Thanks.

--
- Amund.

---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
For additional commands, e-mail: users-help@maven.apache.org

Re: M2 dependency cause null pointer

[Boris Lenzinger <bo...@gmail.com>]

did you try to use a repository instead to check if it fails the same way ?
I'm using download way and it is working fine. I've tried with the 
system syntax way and I see that maven is downloading the pom file. May 
be you are missing it.
Building the site and compilation is working fine for me if I use 
compile or system scope (maven 2.0.2).

Here is my dependency section for log4j to test the download way (avoids 
you to rewrite it just copy and paste it):
<dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.13</version>
      <scope>compile</scope>
    </dependency>

Are you sure it is the generation of the site that causes a nullpointer 
exception and not when it is running a unit test ? May be it is related 
to your code. I say this because:
  * if compilation fails, building the site will remove any interaction 
with your code (starting unit tests, coverage, etc) and you have no 
exception. Note that this means that building the site does require 
log4j version 1.2.13.
  * if compilaton succeeds, then site cannot be built and a 
NullPointerException is raised. And what is the difference ? interaction 
with your code. I would say that the problem is coming from your code 
(but may be I'm worng).

Could you post the stack trace ? I'm not qualified if this a maven error 
but may be some others on the list are (I don't think that full stack is 
useful but 50 first lines could be useful so we can see where it is thrown).
And we can see at which level the exception happens.



Amund Mortensen a écrit :
> Hey,
> I'm having a problem with M2, hope you guys can help me.
> When I run mvn site I get a null pointer exception, mvn compile works 
> great.
> This is when I got this section in my pom.xml:
>
> <dependency>
>     <groupId>log4j</groupId>
>       <artifactId>Logger</artifactId>
>       <version>1.2.13</version>
>       <scope>system</scope>
>       
> <systemPath>/var/maven/shelter/src/main/java/trunk/resources/log4j-1.2.13.jar</systemPath> 
>
> </dependency>
>
> When I remove this section, mvn site work great. But mvn compile does 
> not work, understanderbli, complains about the log4j package.
>
> So.. What could be the cause of the null pointer?
>
>
> Thanks.
>
> -- 
> - Amund.
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> For additional commands, e-mail: users-help@maven.apache.org
>
>


---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
For additional commands, e-mail: users-help@maven.apache.org

Re: M2 dependency cause null pointer

[Tom Huybrechts <to...@gmail.com>]

On 4/9/06, Amund Mortensen <ci...@ostebit.com> wrote:
>
> Hey,
> I'm having a problem with M2, hope you guys can help me.
> When I run mvn site I get a null pointer exception, mvn compile works
> great.
> This is when I got this section in my pom.xml:
>
> <dependency>
>         <groupId>log4j</groupId>
>        <artifactId>Logger</artifactId>
>        <version>1.2.13</version>
>        <scope>system</scope>
>        <systemPath>/var/maven/shelter/src/main/java/trunk/resources/log4j-
> 1.2.13.jar</systemPath>
> </dependency>
>
> When I remove this section, mvn site work great. But mvn compile does not
> work, understanderbli, complains about the log4j package.
>
> So.. What could be the cause of the null pointer?


There was a bug in the project-info-reports plugin that causes an NPE when
using a system scoped dependency. I believe it's fixed in the latest SVN
version.

Tom