MessageQueueAgent (Jadex Active Component Platform 4.0.180 API)

java.lang.Object
- jadex.micro.examples.messagequeue.MessageQueueAgent

All Implemented Interfaces:

IMessageQueueService
```
public class MessageQueueAgent
extends java.lang.Object
implements IMessageQueueService
```
This agent represents the central message queue. It offers a message queue service that is used by the clients.

Field Summary

Fields
Modifier and Type	Field	Description
`protected IInternalAccess`	`agent`	The agent.
`protected java.util.Map<java.lang.String,java.util.List<SubscriptionIntermediateFuture<Event>>>`	`subscribers`	The map of subscribers.

Constructor Summary

Constructors
Constructor Description

MessageQueueAgent()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`agentCreated()`	Called on agent creation.
`IFuture<java.lang.Void>`	`publish(java.lang.String topic, Event event)`	Publish a new event to the queue.
`ISubscriptionIntermediateFuture<Event>`	`subscribe(java.lang.String topic)`	Subscribe to a specific topic.

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

- Field Detail
  - agent
```
protected IInternalAccess agent
```
    The agent.
  - subscribers
```
protected java.util.Map<java.lang.String,java.util.List<SubscriptionIntermediateFuture<Event>>> subscribers
```
    The map of subscribers.
- Constructor Detail
  - MessageQueueAgent
```
public MessageQueueAgent()
```
- Method Detail
  - agentCreated
```
public void agentCreated()
```
    Called on agent creation.
  - subscribe
```
public ISubscriptionIntermediateFuture<Event> subscribe(java.lang.String topic)
```
    Subscribe to a specific topic. New events that fit to the topic are forwarded to all subscribers as intermediate results. A subscribe can unsubscribe by terminating the future.
    
    Specified by:
    
    subscribe in interface IMessageQueueService
    
    Parameters:
    
    topic - The topic.
    
    Returns:
    
    The events.
  - publish
```
public IFuture<java.lang.Void> publish(java.lang.String topic,
                                       Event event)
```
    Publish a new event to the queue.
    
    Specified by:
    
    publish in interface IMessageQueueService
    
    Parameters:
    
    topic - The topic.
    
    event - The event to publish.