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From: Claus Ibsen <claus.ibsen@gmail.com>
Date: Wed, 11 Nov 2009 08:10:57 +0100
Message-ID: <5380c69c0911102310m2e1c6989w39303d57f1ebe70c@mail.gmail.com>
Subject: Re: Exception handling ... onException
To: users@camel.apache.org
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Hi

I had a look and created a ticket to improve/fix this issue
https://issues.apache.org/activemq/browse/CAMEL-2158

The current code did stop to eagerly instead of finding better
candidates longer up the exception hierarchy.


On Tue, Nov 10, 2009 at 11:19 AM, DRy <dirk.rybinski@itellium.com> wrote:
>
> Hi,
>
> I think I've got it ...
>
> On my RouteBuilder-class (see below) I try to catch UnmarshalException in
> one and all other excpetions in the other onException call.
>
>
> =A0 =A0 =A0 =A0onException(UnmarshalException.class)
> =A0 =A0 =A0 =A0.useOriginalBody()
> =A0 =A0 =A0 =A0.handled(true)
> =A0 =A0 =A0 =A0 =A0 =A0.to("log:onException(UnmarshalException.class)?lev=
el=3DINFO")
> =A0 =A0 =A0 =A0.end();
>
> =A0 =A0 =A0 =A0onException(Exception.class)
> =A0 =A0 =A0 =A0.useOriginalBody()
> =A0 =A0 =A0 =A0.handled(true)
> =A0 =A0 =A0 =A0 =A0 =A0.to("log:onException(Exception.class)?level=3DINFO=
")
> =A0 =A0 =A0 =A0.end();
>
> =A0 =A0 =A0 =A0from("activemq:publish?exchangePattern=3DInOnly&transacted=
=3Dtrue")
> =A0 =A0 =A0 =A0 =A0 =A0.routeId(Publish2CenterRouteBuilder.ROUTE_ID)
> =A0 =A0 =A0 =A0 =A0 =A0.transacted()
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0.process(new Publish2CenterProcessor())
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0.multicast()
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0.pipeline()
>
> .to("activemq:BonData?exchangePattern=3DInOnly&transacted=3Dtrue")
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0.end()
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0.pipeline()
>
> .to("activemq:NonBonData?exchangePattern=3DInOnly&transacted=3Dtrue")
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0.end()
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 .end()
> =A0 =A0 =A0 =A0.end();
>
>
> In my processor/bean (Publish2CenterProcessor) if a UnmarshalException is
> thrown I use the constructor that put in a nested exception (in that case=
 a
> XMLException from XMLBeans)!!
>
>
> =A0 =A0 =A0 =A0throw new UnmarshalException("Could not unmarshal body to =
XML3!",
> exception);
>
>
> As descriped in http://camel.apache.org/exception-clause.html camel will
> "start from the bottom (nested caused by) and recursive up in the excepti=
on
> hierarchy to find the first matching onException clause". In my case the
> nested exception (XMLException) will be testet against UnmarshalException
> (no match) and next against Exception (match). So the intended
> UnmarshalException will endup in onException(Exception.class).
>
> Why does camel test "from the bottom (nested caused by) and recursive up =
in
> the exception hierarchy" =A0and not vise versa ... ?
>
>
> ... DRy
>
> --
> View this message in context: http://old.nabble.com/Exception-handling-..=
.-onException-tp26215607p26281107.html
> Sent from the Camel - Users mailing list archive at Nabble.com.
>
>


--=20
Claus Ibsen
Apache Camel Committer

Author of Camel in Action: http://www.manning.com/ibsen/
Open Source Integration: http://fusesource.com
Blog: http://davsclaus.blogspot.com/
Twitter: http://twitter.com/davsclaus