case object IdentityEventAdapter extends EventAdapter with Product with Serializable
No-op model adapter which passes through the incoming events as-is.
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- EventAdapter.scala
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- IdentityEventAdapter
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- EventAdapter
- ReadEventAdapter
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- def fromJournal(event: Any, manifest: String): EventSeq
Convert a event from its journal model to the applications domain model.
Convert a event from its journal model to the applications domain model.
One event may be adapter into multiple (or none) events which should be delivered to the org.apache.pekko.persistence.PersistentActor. Use the specialised org.apache.pekko.persistence.journal.EventSeq#single method to emit exactly one event, or org.apache.pekko.persistence.journal.EventSeq#empty in case the adapter is not handling this event. Multiple EventAdapter instances are applied in order as defined in configuration and their emitted event seqs are concatenated and delivered in order to the PersistentActor.
- event
event to be adapted before delivering to the PersistentActor
- manifest
optionally provided manifest (type hint) in case the Adapter has stored one for this event,
""if none- returns
sequence containing the adapted events (possibly zero) which will be delivered to the PersistentActor
- Definition Classes
- IdentityEventAdapter → ReadEventAdapter
- final def getClass(): Class[_ <: AnyRef]
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- final def isInstanceOf[T0]: Boolean
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- def manifest(event: Any): String
Return the manifest (type hint) that will be provided in the
fromJournalmethod.Return the manifest (type hint) that will be provided in the
fromJournalmethod. Use""if manifest is not needed.- Definition Classes
- IdentityEventAdapter → WriteEventAdapter
- final def ne(arg0: AnyRef): Boolean
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- final def notify(): Unit
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- final def notifyAll(): Unit
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- def productElementName(n: Int): String
- Definition Classes
- Product
- def productElementNames: Iterator[String]
- Definition Classes
- Product
- final def synchronized[T0](arg0: => T0): T0
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- def toJournal(event: Any): Any
Convert domain event to journal event type.
Convert domain event to journal event type.
Some journal may require a specific type to be returned to them, for example if a primary key has to be associated with each event then a journal may require adapters to return
com.example.myjournal.EventWithPrimaryKey(event, key).The
toJournaladaptation must be an 1-to-1 transformation. It is not allowed to drop incoming events during thetoJournaladaptation.- event
the application-side domain event to be adapted to the journal model
- returns
the adapted event object, possibly the same object if no adaptation was performed
- Definition Classes
- IdentityEventAdapter → WriteEventAdapter
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