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Splitters > Splitter in the Background
Splitter in the Background
We know that the splitter slices the parent message into many messages depending on our split logic. These child messages end up in the output channel. When working with Splitters, there are various things Framework does in the background:
-
Stamping with the same
CORRELATION_IDon each of the child messages -
Setting a property
SEQUENCE_SIZEto the number of messages the parent was split into -
Stamping each message with a simple
SEQUENCE_NUMBER
In order to understand these properties, let’s take the earlier example of the splitter. The following is the output to the console by the receiver. It shows that it has received both messages.
Received a message:[Payload=Trade [...][Headers={sequenceNumber=1,
correlationId=18c9eee1-4795-4378-b70e-d236027d0c30, ..., sequenceSize=2}]
Received a message:[Payload=EncryptedTrade[...]][Headers={sequenceNumber=2,
correlationId=18c9eee1-4795-4378-b70e-d236027d0c30, ..., sequenceSize=2}]