The second example is correct.
<aggregate strategyRef="myAggregationStrategy" completionSize="3">
<correlationExpression>
<simple>${header.id} == 1</simple>
</correlationExpression>
<to uri="bean:processorBean?method=process" />
<to uri="bean:finalizerBean?method=shutdown" />
</aggregate>
If finalizerBean is "outside" the <aggregate>
, it will get executed for every message that comes from direct:starter
- which isn't what you want ;)