[jira] [Reopened] (NIFI-222) Versions of extensions should have no impact on ability to pull in artifacts

["Joseph Witt (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NIFI-222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joseph Witt reopened NIFI-222:
------------------------------

> Versions of extensions should have no impact on ability to pull in artifacts
> ----------------------------------------------------------------------------
>
>                 Key: NIFI-222
>                 URL: https://issues.apache.org/jira/browse/NIFI-222
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Tools and Build
>            Reporter: Bryan Bende
>            Assignee: Joseph Witt
>              Labels: build, maven
>             Fix For: 0.0.1
>
>         Attachments: donothing-bundle.tar.gz
>
>
> Hi all,
> I'm trying to setup a Maven project for a custom nar and from looking at
> the other nars I created something like the following:
> 1) parent project with a pom that has two modules
> 2) a jar project where the main code lives, the pom for this project has a
> parent of the pom referenced in #1
> 3) a nar project that has a dependency on #2 and a parent of:
>  <parent>
>         <groupId>org.apache.nifi</groupId>
>         <artifactId>nar-bundle-parent</artifactId>
>         <version>0.0.1-SNAPSHOT</version>
>     </parent>
> Now all three of my poms had a version of 0.1-SNAPSHOT by default, so my
> nar project had something like this:
> <artifactId>example-nar</artifactId>
> <version>0.1-SNAPSHOT</version>
> <packaging>nar</packaging>
> When I ran mvn clean install from the root, the jar built fine, and when it
> hit the nar project it failed with this:
> The following artifacts could not be resolved:
> org.apache.nifi:nifi-api:jar:0.1-SNAPSHOT,
> org.apache.nifi:nifi-processor-utils:jar:0.1-SNAPSHOT
> For some reason it used the version of my nar to look for the Nifi
> artifacts, even though the dependencies I had declared in the jar project
> were:
> <dependency>
>             <groupId>org.apache.nifi</groupId>
>             <artifactId>nifi-api</artifactId>
>             <version>0.0.1-SNAPSHOT</version>
>             <scope>compile</scope>
>         </dependency>
>         <dependency>
>             <groupId>org.apache.nifi</groupId>
>             <artifactId>nifi-processor-utils</artifactId>
>             <version>0.0.1-SNAPSHOT</version>
>             <scope>compile</scope>
>         </dependency>
> Then I changed the version in my nar pom from 0.1-SNAPSHOT to
> 0.0.1-SNAPSHOT and the build works fine and I'm able to deploy the nar no
> problem.
> Is this the expected behavior, or did I set these projects up wrong?
> Thanks,
> Bryan
> ++++++
> As found here in maven docs:
> http://maven.apache.org/guides/introduction/introduction-to-the-pom.html#Project_Aggregation
> The following quote is key:
> "One factor to note is that these variables are processed after inheritance as outlined above. This means that if a parent project uses a variable, then its definition in the child, not the parent, will be the one eventually used."



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