[jira] Resolved: (IVY-592) NullPointerException during ResovleEngine.downloadArtifacts.

["Xavier Hanin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IVY-592?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xavier Hanin resolved IVY-592.
------------------------------

       Resolution: Fixed
    Fix Version/s:     (was: 2.0)
                   2.0-RC1

I've added a test to prevent the NPE. Not sure how to reproduce the problem though, so it may result in other exceptions. But I've also checked other code calling this method to make sure nullity checks were present.

> NullPointerException during ResovleEngine.downloadArtifacts.
> ------------------------------------------------------------
>
>                 Key: IVY-592
>                 URL: https://issues.apache.org/jira/browse/IVY-592
>             Project: Ivy
>          Issue Type: Bug
>    Affects Versions: 2.0.0-alpha-2
>            Reporter: Ross Clewley
>            Assignee: Xavier Hanin
>             Fix For: 2.0-RC1
>
>
> The following NPE occurs whilst resolving transitive configurations under similar circumstances to IVY-590.
> java.lang.NullPointerException
>         at org.apache.ivy.core.resolve.ResolveEngine.downloadArtifacts(ResolveEngine.java:310)
>         at org.apache.ivy.core.resolve.ResolveEngine.resolve(ResolveEngine.java:271)
>         at org.apache.ivy.core.resolve.ResolveEngine.resolve(ResolveEngine.java:193)
>         at org.apache.ivy.Ivy.resolve(Ivy.java:256)
>         at org.apache.ivy.ant.IvyResolve.doExecute(IvyResolve.java:212)
>         at org.apache.ivy.ant.IvyTask.execute(IvyTask.java:281)
> Just as in IVY-590, it's difficult to provide a minimal testcase. It occurs whilst resolving transitive configurations. The order of the dependencies can have an impact. 

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