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Posted to log4j-dev@logging.apache.org by "Mikael Ståldal (JIRA)" <ji...@apache.org> on 2016/12/16 17:24:59 UTC
[jira] [Commented] (LOG4J2-1741) scala: add support for creating
custom plugins
[ https://issues.apache.org/jira/browse/LOG4J2-1741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15755010#comment-15755010 ]
Mikael Ståldal commented on LOG4J2-1741:
----------------------------------------
As far as I can see, the Scala compiler generates a static bridge method in the main class, with the annotation,
> scala: add support for creating custom plugins
> ----------------------------------------------
>
> Key: LOG4J2-1741
> URL: https://issues.apache.org/jira/browse/LOG4J2-1741
> Project: Log4j 2
> Issue Type: Improvement
> Components: Plugins
> Reporter: PJ Fanning
>
> I tried to add a custom appender using Scala but the pattern of having a class with an Plugin annotation and a static method on that class with a PluginFactory or PluginBuilderFactory annotation doesn't seem to work in Scala.
> In Scala, you can create a companion object to a class where you can implement the equivalent of static methods but these are not the same class under the hood. The Scala compiler builds 2 or more classes, the companion object gets a class name with a $ appended to it. I think this is affecting the lookup for the method with the Factory annotation.
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