Conditional route-scoped onException

[Bernard Ligny]

I am trying to model the following logic for the error handling of one single
specific route.

1. Post a (large) xml document
2. If the post failed, then split original xml into into n smaller
documents, and repost them (step 1) individually.

That kind of recursive process needs of course a stopping condition (size of
batch > 1)


<route id="processBatch">
            <from uri="activemq:queue:solr-batches"/>
            <choice>
                <when>
                        <simple>${headers.batch_size} &gt; 1</simple>
                        <onException>
                                <exception>java.lang.Exception</exception>
                                <handled><constant>true</constant></handled>    
                
                                <to uri="direct:splitAndResubmit"/>
                        </onException>
                </when>
            </choice>            
            <to uri="http:..."/>  
</route>

According to the my observations, it seems the uri "direct:splitAndResubmit"
is *always* called. 

So the question is: is this allowed to have such logic, i mean a
<onException> inside a <choice> 
- or should it always directly follow a <from> element ?

Thx,

Bernard.




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