出版一些B、C和D物体有兴趣知道,因为E、F和G不关心。
如果说只有B,C,D应当获得这种“工资”。
什么设计模式有助于最好地效仿?
** How do i use Tibco, without using Tibco?
如果J2SE的正常应用,如果事件的出版商和事件的订户是同一过程空间的物体,则属于观察员模式。
登记员通常会告知出版商,他们希望通过采用特殊方法,如添加Listener(Lstener)和采用具体接口来听取活动。
因此,在你的例子中,我们要说,我们创建了一个接口号码EventListener,在NumberEvent(序号)上有一个方法。
你们的听众都会在你们的出版对象上执行“数字生活”和“附加生活”。
过滤可以在出版商或听众方面进行。 因此,为了执行你,你可以增加Listener(NumberEventListener)听器(NumberEventListener, int min, int max)和你的听器,只有在数量在最高和最高之间才能使用。 然而,这并不是一个典型的执行,因为它使出版商的守则更加复杂,而且你实际上能够灵活。
举例来说,通常听众会接受所有相关活动,抛弃他们不感兴趣的活动。 然而,这几乎取决于实际生活情况。
听众是否同时或依次得到通知,取决于听众是否依次或由活动出版商分别援引。
什么是 Publish——描述信息交流模式?
Also referred to as Publish / Subscribe Channel in Enterprise Integration Patterns: http://www.eaipatterns.com/PublishSubscribeChannel.html
在 Java,JMS通常提供这种信息服务。
观察员模式。
或者,由于你提到某些物体根据电文内容做了一些事情,可适用“过滤链”模式。 它像一个过滤链对我来说是健全的。
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