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https://issues.apache.org/jira/browse/CAMEL-7071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13850038#comment-13850038
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Willem Jiang commented on CAMEL-7071:
-------------------------------------
Collections.reverse(tree) is used to make sure we can get the first cause of
exception in the catch() DSL and ErrorHandler. I will updated the java doc for
it.
> Exchange.getException(Class<T> clazz) returns root cause instead of thrown
> exception
> ------------------------------------------------------------------------------------
>
> Key: CAMEL-7071
> URL: https://issues.apache.org/jira/browse/CAMEL-7071
> Project: Camel
> Issue Type: Bug
> Affects Versions: 2.12.2
> Reporter: Mariusz Lotko
> Assignee: Willem Jiang
>
> If I catch SQLException and wrap it in new MyCoolBuisinessException, then
> Exchange.getException() returns MyCoolBusinessException, but
> Exchange.getException(Exception.class) returns SQLException.
> This impacts ExchangeException annotation which calls
> Exchange.getException(Exception.class).
> Reason for that is in constructor of ObjectUtils.ExceptionIterator which for
> some reason calls Collections.reverse(tree).
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