PreemptiveSubscriber (EventMaid - Core Library 1.0.40 API)

java.lang.Object
- de.quantummaid.eventmaid.subscribing.PreemptiveSubscriber<T>

Type Parameters:

T - the type of messages of the Subscriber can accept

All Implemented Interfaces:

Subscriber<T>
```
public final class PreemptiveSubscriber<T>
extends Object
implements Subscriber<T>
```
A Subscriber that calls the given predicate for each message. The return value of the predicate decides, if the delivery should be continued (true), or preempted (false).

See Also:

EventMaid Documentation

Constructor Summary

Constructors
Constructor Description

PreemptiveSubscriber()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`AcceptingBehavior`	`accept(T message)`	Delivers the message to the `Subscriber`.
`SubscriptionId`	`getSubscriptionId()`	The unique and constant `SubscriptionId` of the `Subscriber`.
`static <T> PreemptiveSubscriber<T>`	`preemptiveSubscriber(Predicate<T> predicate)`	Factory method for a new `PreemptiveSubscriber`.

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

- Constructor Detail
  - PreemptiveSubscriber
```
public PreemptiveSubscriber()
```
- Method Detail
  - preemptiveSubscriber
```
public static <T> PreemptiveSubscriber<T> preemptiveSubscriber(Predicate<T> predicate)
```
    Factory method for a new PreemptiveSubscriber.
    
    Type Parameters:
    
    T - the type of messages the Subscriber accepts
    
    Parameters:
    
    predicate - the predicate to apply on each message
    
    Returns:
    
    a new PreemptiveSubscriber
  - accept
```
public AcceptingBehavior accept(T message)
```
    Description copied from interface: Subscriber
    
    Delivers the message to the Subscriber. The Subscriber can decide, if the delivery continues or is preempted by returning the respective AcceptingBehavior.
    
    Specified by:
    
    accept in interface Subscriber<T>
    
    Parameters:
    
    message - the message
    
    Returns:
    
    AcceptingBehavior to continue or preempt delivery
  - getSubscriptionId
```
public SubscriptionId getSubscriptionId()
```
    Description copied from interface: Subscriber
    
    The unique and constant SubscriptionId of the Subscriber.
    
    Specified by:
    
    getSubscriptionId in interface Subscriber<T>
    
    Returns:
    
    the Subscriber's SubscriptionId