将@Stateful注入MDB是否合法？ [英] Is it legal to inject a @Stateful into an MDB?

问题描述

将@Stateful注入MDB是否合法？

Is it legal to inject a @Stateful into an MDB?

@Stateful
public class InteruptBean implements Interrupt {
    ....
}

@MessageDriven(...)
public class EchoTrigger implements MessageListener {
    @EJB Interrupt interrupt;

    ....
}

或更好的措辞：我可以使用有状态EJB在异步事件驱动架构中传递状态吗？

Or better phrased: Can I use a stateful EJB to pass state around in an asynchronous Event Driven Architecture?

推荐答案

是的，它是合法的，但是这是荒谬的。 MDB实例像SLSB一样汇集在一起​​。在SFSB超时后，MDB将失效。

Yes, it's "legal", but it's nonsensical. MDBs instances are pooled like SLSBs. The MDB will become non-functional after the SFSB times out.

可能在某些时候显式创建SFSB，然后将引用传递给SFSB发送消息以驱动MDB。

It might work to explicitly create the SFSB at some point, and then pass a reference to the SFSB in the messages being sent to drive the MDB.

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