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Posted to users@camel.apache.org by raulvk <ra...@atosorigin.com> on 2008/03/27 18:32:44 UTC
Camel Pipeline not available from XML?
Hi everyone,
I am using Camel embedded inside ServiceMix. In order to provide better
configuration uniformity across the whole SOA deployment, and for
architectural reasons, we have chosen to configure Camel routes using the
Spring XML method instead of using Java DSL.
However, I have noticed that the Pipeline pattern is only available from
Java DSL, as the element is not defined in the Camel XSD located at:
http://activemq.apache.org/camel/schema/spring/camel-spring.xsd.
Is this a bug? Is the Pipeline pattern actually configurable via Spring XML
even though it does not appear in the XML Schema?
Thanks!
--
View this message in context: http://www.nabble.com/Camel-Pipeline-not-available-from-XML--tp16329178s22882p16329178.html
Sent from the Camel - Users mailing list archive at Nabble.com.
Re: Camel Pipeline not available from XML?
Posted by Hadrian Zbarcea <hz...@gmail.com>.
One caveat is that if y, for instance, is an InOnly than z will not
receive the out of y (null), but the *in* of y.
Cheers
Hadrian
On Mar 28, 2008, at 4:17 AM, James Strachan wrote:
> On 27/03/2008, raulvk <ra...@atosorigin.com> wrote:
>>
>>
>> Aaron,
>>
>> Thanks a lot for your help. I will follow your tip and will notch the
>> logging level up to DEBUG ;)
>>
>> However, as far as I know (I've read this somewhere but I can't
>> recall
>> where), when you specify multiple recipients following the syntax you
>> specified (multiple <to> elements or <multicast>), what happens is
>> that the
>> same initial message gets routed to all the recipients.
>> What I want to
>> achieve is a "sequence of invocations", where each recipient gets
>> the result
>> of the processing done by the previous one.
>
> Yes thats what happens when you use the first form...
>
> <route>
> <from uri="direct:a"/>
> <to uri="direct:x"/>
> <to uri="direct:y"/>
> <to uri="direct:z"/>
> <to uri="mock:result"/>
> </route>
>
> that is the result of x is sent to y and the result of that sent to
> z etc.
>
> If you want the same message to be sent separately to each endpoint,
> then thats what <multicast> does (i.e. each recipient gets its own
> copy).
>
> <route>
> <from uri="direct:a"/>
> <multicast>
> <to uri="direct:x"/>
> <to uri="direct:y"/>
> <to uri="direct:z"/>
> <to uri="mock:result"/>
> </multicast>
> </route>
> --
> James
> -------
> http://macstrac.blogspot.com/
>
> Open Source Integration
> http://open.iona.com
Re: Camel Pipeline not available from XML?
Posted by James Strachan <ja...@gmail.com>.
On 27/03/2008, raulvk <ra...@atosorigin.com> wrote:
>
>
> Aaron,
>
> Thanks a lot for your help. I will follow your tip and will notch the
> logging level up to DEBUG ;)
>
> However, as far as I know (I've read this somewhere but I can't recall
> where), when you specify multiple recipients following the syntax you
> specified (multiple <to> elements or <multicast>), what happens is that the
> same initial message gets routed to all the recipients.
> What I want to
> achieve is a "sequence of invocations", where each recipient gets the result
> of the processing done by the previous one.
Yes thats what happens when you use the first form...
<route>
<from uri="direct:a"/>
<to uri="direct:x"/>
<to uri="direct:y"/>
<to uri="direct:z"/>
<to uri="mock:result"/>
</route>
that is the result of x is sent to y and the result of that sent to z etc.
If you want the same message to be sent separately to each endpoint,
then thats what <multicast> does (i.e. each recipient gets its own
copy).
<route>
<from uri="direct:a"/>
<multicast>
<to uri="direct:x"/>
<to uri="direct:y"/>
<to uri="direct:z"/>
<to uri="mock:result"/>
</multicast>
</route>
--
James
-------
http://macstrac.blogspot.com/
Open Source Integration
http://open.iona.com
Re: Camel Pipeline not available from XML?
Posted by raulvk <ra...@atosorigin.com>.
Aaron,
Thanks a lot for your help. I will follow your tip and will notch the
logging level up to DEBUG ;)
However, as far as I know (I've read this somewhere but I can't recall
where), when you specify multiple recipients following the syntax you
specified (multiple <to> elements or <multicast>), what happens is that the
same initial message gets routed to all the recipients. What I want to
achieve is a "sequence of invocations", where each recipient gets the result
of the processing done by the previous one.
Perhaps someone could shed some light on this??
Thanks a lotª
Aaron Crickenberger wrote:
>
>
> On Mar 27, 2008, at 1:32 PM, raulvk wrote:
>
>> However, I have noticed that the Pipeline pattern is only available
>> from
>> Java DSL, as the element is not defined in the Camel XSD located at:
>> http://activemq.apache.org/camel/schema/spring/camel-spring.xsd.
>
> As I understand it, pipelines are implicitly created when specifying
> routes via XML. The following should be equivalent to the example
> found at http://activemq.apache.org/camel/pipes-and-filters.html
>
> <route>
> <from uri="direct:a"/>
> <to uri="direct:x"/>
> <to uri="direct:y"/>
> <to uri="direct:z"/>
> <to uri="mock:result"/>
> </route>
>
> You have to explicitly specify multicast if this isn't the behavior
> you want. I think it would look like this?
> <route>
> <from uri="direct:a"/>
> <multicast>
> <to uri="direct:x"/>
> <to uri="direct:y"/>
> <to uri="direct:z"/>
> <to uri="mock:result"/>
> </multicast>
> </route>
>
> If you turn on DEBUG level logging when running Camel's unit tests or
> examples, you'll see a lot of information about what routing
> constructs are used under the hood.
>
> Hope this helps!
>
> - aaron
>
>
--
View this message in context: http://www.nabble.com/Camel-Pipeline-not-available-from-XML--tp16329178s22882p16337196.html
Sent from the Camel - Users mailing list archive at Nabble.com.
Re: Camel Pipeline not available from XML?
Posted by Aaron Crickenberger <aa...@intalgent.com>.
On Mar 27, 2008, at 1:32 PM, raulvk wrote:
> However, I have noticed that the Pipeline pattern is only available
> from
> Java DSL, as the element is not defined in the Camel XSD located at:
> http://activemq.apache.org/camel/schema/spring/camel-spring.xsd.
As I understand it, pipelines are implicitly created when specifying
routes via XML. The following should be equivalent to the example
found at http://activemq.apache.org/camel/pipes-and-filters.html
<route>
<from uri="direct:a"/>
<to uri="direct:x"/>
<to uri="direct:y"/>
<to uri="direct:z"/>
<to uri="mock:result"/>
</route>
You have to explicitly specify multicast if this isn't the behavior
you want. I think it would look like this?
<route>
<from uri="direct:a"/>
<multicast>
<to uri="direct:x"/>
<to uri="direct:y"/>
<to uri="direct:z"/>
<to uri="mock:result"/>
</multicast>
</route>
If you turn on DEBUG level logging when running Camel's unit tests or
examples, you'll see a lot of information about what routing
constructs are used under the hood.
Hope this helps!
- aaron
Re: Camel Pipeline not available in XML
Posted by James Strachan <ja...@gmail.com>.
On 28/03/2008, raulvk <ra...@atosorigin.com> wrote:
>
> Hi, could you please check the URL? It points to this thread.
Hmm on the apache lists I seem to get multiple mails :) Though nabble
has just one :)
http://www.nabble.com/Camel-Pipeline-not-available-from-XML--td16329178s22882.html
sorry for the noise nabble surfers
--
James
-------
http://macstrac.blogspot.com/
Open Source Integration
http://open.iona.com
Re: Camel Pipeline not available in XML
Posted by raulvk <ra...@atosorigin.com>.
Hi, could you please check the URL? It points to this thread.
Thanks!
James.Strachan wrote:
>
> If you're searching the archive this thread was answered here:
> http://www.nabble.com/Camel-Pipeline-not-available-from-XML--tp16329178s22882p16329178.html
>
> --
> James
> -------
> http://macstrac.blogspot.com/
>
> Open Source Integration
> http://open.iona.com
>
>
--
View this message in context: http://www.nabble.com/Camel-Pipeline-not-available-from-XML--tp16329178s22882p16351014.html
Sent from the Camel - Users mailing list archive at Nabble.com.
Re: Camel Pipeline not available in XML
Posted by James Strachan <ja...@gmail.com>.
On 27/03/2008, raulvk <ra...@atosorigin.com> wrote:
>
> Hi everyone,
>
> I am using Camel embedded inside ServiceMix. In order to provide better
> configuration uniformity across the whole SOA deployment, and for
> architectural reasons, we have chosen to configure Camel routes using the
> Spring XML method instead of using Java DSL.
>
> However, I have noticed that the Pipeline pattern is only available from
> Java DSL, as the element is not defined in the Camel XSD located at:
> http://activemq.apache.org/camel/schema/spring/camel-spring.xsd.
>
> Is this a bug? Is the Pipeline pattern actually configurable via Spring XML
> even though it does not appear in the XML Schema?
If you're searching the archive this thread was answered here:
http://www.nabble.com/Camel-Pipeline-not-available-from-XML--tp16329178s22882p16329178.html
--
James
-------
http://macstrac.blogspot.com/
Open Source Integration
http://open.iona.com