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From "Laurent Malvert (JIRA)" <j...@codehaus.org>
Subject [jira] (MRESOURCES-160) NPE when copy-resources set to use the default <outputDirectory> as aspecified by documentation
Date Thu, 08 Mar 2012 01:59:04 GMT

    [ https://jira.codehaus.org/browse/MRESOURCES-160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=293614#comment-293614
] 

Laurent Malvert edited comment on MRESOURCES-160 at 3/7/12 7:57 PM:
--------------------------------------------------------------------

Might be more an enhancement than a bug as the [goal's documentation|http://maven.apache.org/plugins/maven-resources-plugin/copy-resources-mojo.html]
indicates that this is a required parameter.

So it appears the the documentation on the maven site is wrong (actually, mayve it's just
badly worded:

{quote}
[...] The default directory for a build is {{$\{basedir\}/src/main/resources}}.
{quote}

Maybe the intent was to say that this is where resources are usually located, not exactly
that the default value for {{directory}} is supposed to be this.


However, it shouldn't really fail with an NPE without giving any helpful information.

*Careful:* in my ticket above I mention {{outputDirectory}}. Obviously I meant {{directory}},
as shown in the example project's configuration. Sorry for the confusion. (Can't seem to be
able to re-edit the ticket itself.)

                
      was (Author: laurent.malvert):
    Might be more an enhancement than a bug as the [goal's documentation|http://maven.apache.org/plugins/maven-resources-plugin/copy-resources-mojo.html]
indicates that this is a required parameter.

So it appears the the documentation on the maven site is wrong (actually, mayve it's just
badly worded:

{quote}
[...] The default directory for a build is {{$\{basedir\}/src/main/resources}}.
{quote}

Maybe the intent was to say that this is where resources are usually located, not exactly
that the default value for {{directory}} is supposed to be this.


However, it shouldn't really fail with an NPE without giving any helpful information.

**Careful:** in my ticket above I mention {{outputDirectory}}. Obviously I meant {{directory}},
as shown in the example project's configuration. Sorry for the confusion.

                  
> NPE when copy-resources set to use the default <outputDirectory> as aspecified
by documentation
> -----------------------------------------------------------------------------------------------
>
>                 Key: MRESOURCES-160
>                 URL: https://jira.codehaus.org/browse/MRESOURCES-160
>             Project: Maven 2.x Resources Plugin
>          Issue Type: Bug
>          Components: copy
>    Affects Versions: 2.5
>         Environment: Windows 7 64 bits
> Java 1.6.0_31 x64
> maven 3.0.4
>            Reporter: Laurent Malvert
>         Attachments: error.log, resources-npe.tar.gz
>
>
> h2. Context and Issue
> When using the {{maven-resources-plugin}} to copy a resource to a custom directory using
the {{copy-resources}} goal, it triggers an NPE without any additional information when the
{{<outputDirectory>}} element is not specified:
> {noformat}
> [ERROR] Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:2.5:copy-resources
(copy-resources) on project NPEResourcesBug: Execution copy-resources of goal org.apache.maven.plugins:maven-resources-plugin:2.5:copy-resources
failed. NullPointerException -> [Help 1]
> {noformat}
> However, the documentation at: http://maven.apache.org/pom.html#Resources
> clearly states:
> {quote}
> directory: This element's value defines where the resources are to be found. The default
directory for a build is ${basedir}/src/main/resources.
> {quote}
> Specifying it explictly with this value works as intended.
> _(Not sure if relevant to maven-resources-plugin or the MSHARED resources component?)_
> h2. Test Case
> Or at leat a project to reproduce.
> See the attached project for a working test case, which uses this configuration:
> {code}
>             <plugin>
>                 <groupId>org.apache.maven.plugins</groupId>
>                 <artifactId>maven-resources-plugin</artifactId>
>                 <version>2.5</version>
>                 <executions>
>                     <execution>
>                         <id>copy-resources</id>
>                         <phase>validate</phase>
>                         <goals>
>                             <goal>copy-resources</goal>
>                         </goals>
>                         <configuration>
>                             <outputDirectory>
>                                 ${basedir}/resources
>                             </outputDirectory>
>                             <resources>     
>                                 <resource>
>                                     <!--
>                                         works when included explictly set,
>                                         NPE otherwise, though documentation at:
>                                         http://maven.apache.org/pom.html#Resources
>                                         really mentions:
>                                         "directory: This element's
>                                         value defines where the
>                                         resources are to be found. The
>                                         default directory for a build
>                                         is
>                                         ${basedir}/src/main/resources."
>                                     -->
>                                     <!--
>                                     <directory>${basedir}/src/main/resources</directory>
>                                     -->
>                                     <includes>
>                                         <include>**/somefile.xml</include>
>                                     </includes>
>                                 </resource>
>                             </resources>              
>                         </configuration>            
>                     </execution>
>                 </executions>
>             </plugin>
> {code}

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