AggregatorStrategy - should also be invoked for the first exchange
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Key: CAMEL-1638
URL: https://issues.apache.org/activemq/browse/CAMEL-1638
Project: Apache Camel
Issue Type: Improvement
Components: camel-core
Affects Versions: 1.6.1, 2.0-M1
Reporter: Claus Ibsen
Assignee: Claus Ibsen
Fix For: 2.0.0
Using aggregator, splitterl, multicast etc. that supports
{{AggregatorStrategy}} all have the flaw that they skip invoking this interface
callback for the very first exchange.
This hazzles the end users implementing this interface if they are to be able
to traverse all the exchanges, to eg summing a total amount or the likes.
And its also a bit confusing as well why the first one is skipped.
And if you aggregator out of order then you dont know which one was the first
exchange.
So we should invoke this callback always. And the first time the
{{oldExchange}} parameter is null.
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