java.lang.Object
- org.apache.pekko.actor.typed.internal.receptionist.ReceptionistMessages.Listing<T>

All Implemented Interfaces:

java.io.Serializable, Receptionist.Listing, scala.Equals, scala.Product

Enclosing class:

ReceptionistMessages
```
public static final class ReceptionistMessages.Listing<T>
extends java.lang.Object
implements Receptionist.Listing, scala.Product, java.io.Serializable
```
See Also:

Serialized Form

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`scala.collection.immutable.Set<ActorRef<T>>`	`_allServiceInstances()`
`scala.collection.immutable.Set<ActorRef<T>>`	`_serviceInstances()`
`<M> scala.collection.immutable.Set<ActorRef<M>>`	`allServiceInstances(ServiceKey<M> key)`	Scala API: Return both the reachable and the unreachable service instances.
`boolean`	`canEqual(java.lang.Object x$1)`
`<T> ReceptionistMessages.Listing<T>`	`copy(ServiceKey<T> key, scala.collection.immutable.Set<ActorRef<T>> _serviceInstances, scala.collection.immutable.Set<ActorRef<T>> _allServiceInstances, boolean servicesWereAddedOrRemoved)`
`<T> ServiceKey<T>`	`copy$default$1()`
`<T> scala.collection.immutable.Set<ActorRef<T>>`	`copy$default$2()`
`<T> scala.collection.immutable.Set<ActorRef<T>>`	`copy$default$3()`
`<T> boolean`	`copy$default$4()`
`boolean`	`equals(java.lang.Object x$1)`
`<M> java.util.Set<ActorRef<M>>`	`getAllServiceInstances(ServiceKey<M> key)`	Java API: Return both the reachable and the unreachable service instances.
`<M> java.util.Set<ActorRef<M>>`	`getServiceInstances(ServiceKey<M> key)`	Java API: Return the reachable service instances.
`int`	`hashCode()`
`boolean`	`isForKey(ServiceKey<?> key)`
`ServiceKey<T>`	`key()`	Scala API
`int`	`productArity()`
`java.lang.Object`	`productElement(int x$1)`
`java.lang.String`	`productElementName(int x$1)`
`scala.collection.Iterator<java.lang.Object>`	`productIterator()`
`java.lang.String`	`productPrefix()`
`<M> scala.collection.immutable.Set<ActorRef<M>>`	`serviceInstances(ServiceKey<M> key)`	Scala API: Return the reachable service instances.
`boolean`	`servicesWereAddedOrRemoved()`	Returns `true` only if this `Listing` was sent triggered by new actors added or removed to the receptionist.
`java.lang.String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface scala.Product
productElementNames

Methods inherited from interface org.apache.pekko.actor.typed.receptionist.Receptionist.Listing
getKey

- Method Detail
  - key
```
public ServiceKey<T> key()
```
    Description copied from interface: Receptionist.Listing
    
    Scala API
    
    Specified by:
    
    key in interface Receptionist.Listing
  - _serviceInstances
```
public scala.collection.immutable.Set<ActorRef<T>> _serviceInstances()
```
  - _allServiceInstances
```
public scala.collection.immutable.Set<ActorRef<T>> _allServiceInstances()
```
  - servicesWereAddedOrRemoved
```
public boolean servicesWereAddedOrRemoved()
```
    Description copied from interface: Receptionist.Listing
    
    Returns true only if this Listing was sent triggered by new actors added or removed to the receptionist. When false the event is only about reachability changes - meaning that the full set of actors (Receptionist.Listing.allServiceInstances(org.apache.pekko.actor.typed.receptionist.ServiceKey<T>) or Receptionist.Listing.getAllServiceInstances(org.apache.pekko.actor.typed.receptionist.ServiceKey<T>)) is the same as the previous Listing.
    knowing this is useful for subscribers only concerned with Receptionist.Listing.allServiceInstances(org.apache.pekko.actor.typed.receptionist.ServiceKey<T>) or Receptionist.Listing.getAllServiceInstances(org.apache.pekko.actor.typed.receptionist.ServiceKey<T>) that can then ignore Listings related to reachability.
    In a non-clustered ActorSystem this will be true for all listings. For Find queries and the initial listing for a Subscribe this will always be true.
    
    Specified by:
    
    servicesWereAddedOrRemoved in interface Receptionist.Listing
  - isForKey
```
public boolean isForKey(ServiceKey<?> key)
```
    Specified by:
    
    isForKey in interface Receptionist.Listing
  - serviceInstances
```
public <M> scala.collection.immutable.Set<ActorRef<M>> serviceInstances(ServiceKey<M> key)
```
    Description copied from interface: Receptionist.Listing
    
    Scala API: Return the reachable service instances.
    In a non-clustered ActorSystem this will always be all registered instances for a service key.
    For a clustered ActorSystem it only contain services on nodes that are not seen as unreachable (note that they could have still have become unreachable between this message being sent and the receiving actor processing it).
    For a list including both reachable and unreachable instances see Receptionist.Listing.allServiceInstances(org.apache.pekko.actor.typed.receptionist.ServiceKey<T>)
    Also, see ServiceKey.Listing for more convenient pattern matching
    
    Specified by:
    
    serviceInstances in interface Receptionist.Listing
  - getServiceInstances
```
public <M> java.util.Set<ActorRef<M>> getServiceInstances(ServiceKey<M> key)
```
    Description copied from interface: Receptionist.Listing
    
    Java API: Return the reachable service instances.
    In a non-clustered ActorSystem this will always be all registered instances for a service key.
    For a clustered ActorSystem it only contain services on nodes that has are not seen as unreachable (note that they could have still have become unreachable between this message being sent and the receiving actor processing it).
    For a list including both reachable and unreachable instances see Receptionist.Listing.getAllServiceInstances(org.apache.pekko.actor.typed.receptionist.ServiceKey<T>)
    
    Specified by:
    
    getServiceInstances in interface Receptionist.Listing
  - allServiceInstances
```
public <M> scala.collection.immutable.Set<ActorRef<M>> allServiceInstances(ServiceKey<M> key)
```
    Description copied from interface: Receptionist.Listing
    
    Scala API: Return both the reachable and the unreachable service instances.
    In a non-clustered ActorSystem this will always be the same as Receptionist.Listing.serviceInstances(org.apache.pekko.actor.typed.receptionist.ServiceKey<T>).
    For a clustered ActorSystem this include both services on nodes that are reachable and nodes that are unreachable.
    
    Specified by:
    
    allServiceInstances in interface Receptionist.Listing
  - getAllServiceInstances
```
public <M> java.util.Set<ActorRef<M>> getAllServiceInstances(ServiceKey<M> key)
```
    Description copied from interface: Receptionist.Listing
    
    Java API: Return both the reachable and the unreachable service instances.
    In a non-clustered ActorSystem this will always be the same as Receptionist.Listing.getServiceInstances(org.apache.pekko.actor.typed.receptionist.ServiceKey<T>).
    For a clustered ActorSystem this include both services on nodes that are reachable and nodes that are unreachable.
    
    Specified by:
    
    getAllServiceInstances in interface Receptionist.Listing
  - copy
```
public <T> ReceptionistMessages.Listing<T> copy(ServiceKey<T> key,
                                                scala.collection.immutable.Set<ActorRef<T>> _serviceInstances,
                                                scala.collection.immutable.Set<ActorRef<T>> _allServiceInstances,
                                                boolean servicesWereAddedOrRemoved)
```
  - copy$default$1
```
public <T> ServiceKey<T> copy$default$1()
```
  - copy$default$2
```
public <T> scala.collection.immutable.Set<ActorRef<T>> copy$default$2()
```
  - copy$default$3
```
public <T> scala.collection.immutable.Set<ActorRef<T>> copy$default$3()
```
  - copy$default$4
```
public <T> boolean copy$default$4()
```
  - productPrefix
```
public java.lang.String productPrefix()
```
    Specified by:
    
    productPrefix in interface scala.Product
  - productArity
```
public int productArity()
```
    Specified by:
    
    productArity in interface scala.Product
  - productElement
```
public java.lang.Object productElement(int x$1)
```
    Specified by:
    
    productElement in interface scala.Product
  - productIterator
```
public scala.collection.Iterator<java.lang.Object> productIterator()
```
    Specified by:
    
    productIterator in interface scala.Product
  - canEqual
```
public boolean canEqual(java.lang.Object x$1)
```
    Specified by:
    
    canEqual in interface scala.Equals
  - productElementName
```
public java.lang.String productElementName(int x$1)
```
    Specified by:
    
    productElementName in interface scala.Product
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - equals
```
public boolean equals(java.lang.Object x$1)
```
    Specified by:
    
    equals in interface scala.Equals
    
    Overrides:
    
    equals in class java.lang.Object

Class ReceptionistMessages.Listing<T>

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface scala.Product

Methods inherited from interface org.apache.pekko.actor.typed.receptionist.Receptionist.Listing

Method Detail

key

_serviceInstances

_allServiceInstances

servicesWereAddedOrRemoved

isForKey

serviceInstances

getServiceInstances

allServiceInstances

getAllServiceInstances

copy

copy$default$1

copy$default$2

copy$default$3

copy$default$4

productPrefix

productArity

productElement

productIterator

canEqual

productElementName

hashCode

toString

equals