HasInteractionIdAndSequence
Extends HasInteractionId to add a strictly monotonically increasing sequence number.
There are two different use cases for this:
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The first is to identify different transactions within the overall org.apache.causeway.applib.services.iactn.Interaction .
In the vast majority of cases there will only be a single transaction per org.apache.causeway.applib.services.iactn.Interaction , but this isn’t always the case as domain objects may on occasion need to explicitly manage transaction boundaries using org.apache.causeway.applib.services.xactn.TransactionService .
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The second is to identify different executions within the overall org.apache.causeway.applib.services.iactn.Interaction .
In the vast majority of cases there will only be a single execution per org.apache.causeway.applib.services.iactn.Interaction , but this isn’t always the case; sometimes a top-level execution will cause another execution to occur, using the org.apache.causeway.applib.services.wrapper.WrapperFactory .
These two different sequences are independent of each other.
API
interface HasInteractionIdAndSequence {
int getSequence() (1)
}| 1 | getSequence()
Holds the sequence number uniquely an "event" within the overall org.apache.causeway.applib.services.iactn.Interaction . |