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From "Guillaume Nodet (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SSHD-739) A call to resolvePropertyValue can be very inefficient
Date Wed, 12 Apr 2017 19:13:41 GMT

     [ https://issues.apache.org/jira/browse/SSHD-739?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Guillaume Nodet reassigned SSHD-739:

    Assignee: Guillaume Nodet

> A call to resolvePropertyValue can be very inefficient
> ------------------------------------------------------
>                 Key: SSHD-739
>                 URL: https://issues.apache.org/jira/browse/SSHD-739
>             Project: MINA SSHD
>          Issue Type: Improvement
>            Reporter: Guillaume Nodet
>            Assignee: Guillaume Nodet
>            Priority: Minor
> Each time a property is retrieved, all system properties names are iterated.
> This is because {{PropertyResolverUtil#resolvePropertyValue}} is calling {{GenericUtils.isEmpty(props)}}
on a {{SyspropsMapWrapper}}.
> This can be solved by using {{isNull(props)}} instead of {{isEmpty(props)}} as there's
no need to check if the map is empty.
> In the same call, there's also a call to {{System.getProperty}} which seems to be redundant
with the {{SyspropsMapWrapper}}.  I think it should be removed.

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