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Flow of an exchange through a route

  • The out message from each step is used as the in message for the next step
  • if there is no out message then the in message is used instead
  • For the InOut MEP the out from the last step in the route is returned to the producer. In case of InOnly the last out is thrown away
Tip
titleBeware of getOut to check if there is an out message

exchange.getOut creates an out message if there is none. So if you want to check if there is an out message then you should use exchange.hasOut instead

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