DomainEvent

Domain event represents an meaningful business event that occurred in the system. It is a message that back-end system knows how to process and that will change the state of the system.

They are preferred way of manipulating data instead of simple CUD operations (create, update, delete). Unlike aggregate domain event which is tied to a change in a single aggregate root, domain event should be used when an action will result in modifications to multiple aggregates, external call (like sending an email) or some other action.

By default event will be applied immediately. If async is used, event will be stored immediately but applied later.

DomainEvent is defined in DSL with keyword event.

module Todo {
  aggregate Task;
  event MarkDone {
    Task task;
  }
}

Source: DomainEvent.scala

Linear Supertypes

Identifiable, DataSource, AnyRef, Any

Abstract Value Members

abstract def URI: String

Domain object identity.
Domain object identity. This identity can be used to lookup domain object
returns
domain object identity

Definition Classes
Identifiable
abstract def processedAt: Option[OffsetDateTime]
abstract def queuedAt: OffsetDateTime

Concrete Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

Related Doc: package patterns

trait DomainEvent extends Identifiable

Abstract Value Members

abstract def URI: String

abstract def processedAt: Option[OffsetDateTime]

abstract def queuedAt: OffsetDateTime

Concrete Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from Identifiable

Inherited from DataSource

Inherited from AnyRef

Inherited from Any

Ungrouped