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https://issues.apache.org/jira/browse/ISIS-1498?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dan Haywood resolved ISIS-1498.
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Resolution: Fixed
> BackgroundCommandExecution does not handle exceptions correctly.
> ----------------------------------------------------------------
>
> Key: ISIS-1498
> URL: https://issues.apache.org/jira/browse/ISIS-1498
> Project: Isis
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.13.0
> Reporter: Dan Haywood
> Assignee: Dan Haywood
> Priority: Minor
> Fix For: 1.13.1
>
>
> Seen two separate issues.
> First, when there was a mismatch in arguments to parameters (see ISIS-1497),
> this resulted in an NPE in this line of the catch block:
> {code}
> Exception unused = backgroundInteraction.getPriorExecution().getThrew();
> {code}
> specifically, getPriorExecution() returned null.
> Then, when I worked around that issue so that the action could be invoked but
> when executed threw an exception, resulted in an NPE in this line of the
> catch block:
> {code}
> backgroundInteraction.getCurrentExecution().setThrew(e);
> {code}
> Here, getCurrentExecution() returned null.
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