abstract class Behavior[T] extends AnyRef
The behavior of an actor defines how it reacts to the messages that it receives. The message may either be of the type that the Actor declares and which is part of the ActorRef signature, or it may be a system Signal that expresses a lifecycle event of either this actor or one of its child actors.
Behaviors can be formulated in a number of different ways, either by using the DSLs in akka.actor.typed.scaladsl.Behaviors and akka.actor.typed.javadsl.Behaviors or extending the abstract ExtensibleBehavior class.
Closing over ActorContext makes a Behavior immobile: it cannot be moved to another context and executed there, and therefore it cannot be replicated or forked either.
This base class is not meant to be extended by user code. If you do so, you may lose binary compatibility.
Not for user extension.
- Self Type
- Behavior[T]
- Annotations
- @DoNotInherit()
- Source
- Behavior.scala
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- final def !=(arg0: Any): Boolean
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- final def ##: Int
- Definition Classes
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- def +(other: String): String
- def ->[B](y: B): (Behavior[T], B)
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- val behavior: Behavior[T]
- Implicit
- This member is added by an implicit conversion from Behavior[T] toBehaviorDecorators[T] performed by method BehaviorDecorators in akka.actor.typed.Behavior.
- Definition Classes
- BehaviorDecorators
- def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
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- @throws(classOf[java.lang.CloneNotSupportedException]) @HotSpotIntrinsicCandidate() @native()
- def ensuring(cond: (Behavior[T]) => Boolean, msg: => Any): Behavior[T]
- def ensuring(cond: (Behavior[T]) => Boolean): Behavior[T]
- def ensuring(cond: Boolean, msg: => Any): Behavior[T]
- def ensuring(cond: Boolean): Behavior[T]
- final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def equals(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef → Any
- final def getClass(): Class[_ <: AnyRef]
- Definition Classes
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- @HotSpotIntrinsicCandidate() @native()
- def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @HotSpotIntrinsicCandidate() @native()
- final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- final def narrow[U <: T]: Behavior[U]
Narrow the type of this Behavior, which is always a safe operation.
Narrow the type of this Behavior, which is always a safe operation. This method is necessary to implement the contravariant nature of Behavior (which cannot be expressed directly due to type inference problems).
- final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- final def notify(): Unit
- Definition Classes
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- @HotSpotIntrinsicCandidate() @native()
- final def notifyAll(): Unit
- Definition Classes
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- @HotSpotIntrinsicCandidate() @native()
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- def toString(): String
- Definition Classes
- AnyRef → Any
- def transformMessages[Outer](matcher: PartialFunction[Outer, T])(implicit arg0: ClassTag[Outer]): Behavior[Outer]
Transform the incoming messages by placing a funnel in front of the wrapped
Behavior: the supplied PartialFunction decides which message to pull in (those that it is defined at) and may transform the incoming message to place them into the wrapped Behavior’s type hierarchy.Transform the incoming messages by placing a funnel in front of the wrapped
Behavior: the supplied PartialFunction decides which message to pull in (those that it is defined at) and may transform the incoming message to place them into the wrapped Behavior’s type hierarchy. Signals are not transformed.Example:
val b: Behavior[Number] = Behaviors .receive[String] { (ctx, msg) => println(msg) Behaviors.same } .transformMessages[Number] { case b: BigDecimal => s"BigDecimal($b)" case i: BigInt => s"BigInteger($i)" // all other kinds of Number will be `unhandled` }
The
ClassTagforOuterensures that only messages of this class or a subclass thereof will be intercepted. Other message types (e.g. a private protocol) will bypass the interceptor and be continue to the inner behavior untouched.- Implicit
- This member is added by an implicit conversion from Behavior[T] toBehaviorDecorators[T] performed by method BehaviorDecorators in akka.actor.typed.Behavior.
- Definition Classes
- BehaviorDecorators
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException]) @native()
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
Deprecated Value Members
- def finalize(): Unit
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- protected[lang]
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- @throws(classOf[java.lang.Throwable]) @Deprecated
- Deprecated
(Since version 9)
- def formatted(fmtstr: String): String
- Implicit
- This member is added by an implicit conversion from Behavior[T] toStringFormat[Behavior[T]] performed by method StringFormat in scala.Predef.
- Definition Classes
- StringFormat
- Annotations
- @deprecated @inline()
- Deprecated
(Since version 2.12.16) Use
formatString.format(value)instead ofvalue.formatted(formatString), or use thef""string interpolator. In Java 15 and later,formattedresolves to the new method in String which has reversed parameters.
- def →[B](y: B): (Behavior[T], B)
- Implicit
- This member is added by an implicit conversion from Behavior[T] toArrowAssoc[Behavior[T]] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
- Annotations
- @deprecated
- Deprecated
(Since version 2.13.0) Use
->instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.