[logback-dev] [JIRA] Commented: (LBCLASSIC-276) Add support for Throwable.getSuppressed()

[Joern Huxhorn (JIRA)]

    [ http://jira.qos.ch/browse/LBCLASSIC-276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12343#action_12343 ] 

Joern Huxhorn commented on LBCLASSIC-276:
-----------------------------------------

Just a small status update.

The following code needs another look for full support of getSuppressed():
ch.qos.logback.classic.db.DBAppender.insertThrowable
ch.qos.logback.classic.html.DefaultThrowableRenderer.render
ch.qos.logback.classic.net.SyslogAppender.postProcess

ch.qos.logback.classic.pattern.RootCauseFirstThrowableProxyConverter.subjoinRootCauseFirst
ch.qos.logback.classic.pattern.ThrowableProxyConverter.throwableProxyToString

I previously added support to ch.qos.logback.classic.spi.ThrowableProxyUtil.asString but, unfortunately, this method isn't used in any of the above code.

I'm not sure if printing of suppressed exceptions should be optional in the two ProxyConverter implementations and if so, how to implement that behavior .

Concerning DefaultThrowableRenderer and SyslogAppender, I'd guess that they should just call asString instead of reimplementing it.

> Add support for Throwable.getSuppressed()
> -----------------------------------------
>
>                 Key: LBCLASSIC-276
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-276
>             Project: logback-classic
>          Issue Type: New Feature
>    Affects Versions: 0.9.29
>            Reporter: Joern Huxhorn
>            Assignee: Logback dev list
>
> See http://old.nabble.com/Java-7-automatic-resource-management-and-suppressed-exceptions-to31821324.html
> Java SE 7 adds a new feature to Throwable. http://www.oracle.com/technetwork/articles/java/trywithresources-401775.html explains this in detail.
> Relevant for us is the following new method:
> Throwable[] getSuppressed()
> It can optionally contain a list of Throwables that were suppressed by the new Java SE 7 try-with-resource functionality.
> We need to add support for that method be means of reflection.

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