public Boolean isExternalRedelivered() {
Boolean answer = null;
// check property first, as the implementation details to know if the message
// was externally redelivered is message specific, and thus the message implementation
// could potentially change during routing, and therefore later we may not know if the
// original message was externally redelivered or not, therefore we store this detail
// as a exchange property to keep it around for the lifecycle of the exchange
if (hasProperties()) {
answer = getProperty(Exchange.EXTERNAL_REDELIVERED, null, Boolean.class);
}
if (answer == null) {
// lets avoid adding methods to the Message API, so we use the
// DefaultMessage to allow component specific messages to extend
// and implement the isExternalRedelivered method.
DefaultMessage msg = getIn(DefaultMessage.class);
if (msg != null) {
answer = msg.isTransactedRedelivered();
// store as property to keep around
setProperty(Exchange.EXTERNAL_REDELIVERED, answer);
}
}
return answer;
}
