There is an asynchronous callback model and an asynchronous polling model.
其中包含异步回调模型和异步轮询模型。
This paper brings up a solution of multi-thread asynchronous polling in EJB container.
设计中我们提出了在EJB容器内实现异步多线程轮询的解决方案。
Long Polling: Also known as Asynchronous Polling, this method is a hybrid of pure server push and client pull.
长时间轮询：也就是所谓的异步轮询，这种方式是纯服务器端推送方式和客户端拉取方式的混合。
It is responsible for active network discovery, polling for device outages and services, and intercepting or processing asynchronous events from devices, services, or higher level distributed agents.
第一层负责发现活动网络，轮询服务和设备是否出故障，以及截获或处理来自设备、服务或更高层分布式代理的异步事件。
In earlier versions of Axis2 a class named, callback, which could be used as the callback mechanism for asynchronous messages or as a polling mechanism.
Axis2的早期版本中有一个叫做Callback的类，它可以被用来作为异步式消息的回调机制，或是一种轮询(polling)机制。
In this way, even without polling, the client is always in a state waiting for a response from the Web service, which simulates an asynchronous notification.
这样，即使不轮询，客户机也始终处于等待模拟异步通知的Web服务响应的状态。
This new interface allows for finer grained notifications during the asynchronous invocation of a service, but it does not provide the polling mechanism formerly found in the Callback class.
藉由这个新的接口，开发人员可以实现service异步调用过程中的细粒度通知，但它并没有提供Callback类中的轮询机制。
So the Callback class can be used both as a callback mechanism or as a polling mechanism during an asynchronous invocation.
因此，Callback类可同时用作回调机制或在异步调用期间用作轮询机制。
To solve the shortage of asynchronism in CORBA traditional invoke technology, this paper studys the two asynchronous invoke model: callback and polling.
针对CORBA传统调用技术在异步性方面的不足，研究了回调和轮询两种异步调用模型。
This paper introduces the concept of asynchronous method invocation based on CORBA, and discusses the principle and implementation technology of its two model: callback and polling.
介绍了基于CORBA的异步调用技术，探讨了异步回调和异步轮询两种模型的原理及实现技术。
So, use no block I/O application without access to the equipment is polling, and block access can be similar to "break" replaced the asynchronous notification.
这样，使用无阻塞I/O的应用程序无须轮询设备是否可访问，而阻塞访问也可以被类似“中断”的异步通知所取代。
Polling for the Status of an Asynchronous Operation.
轮询非同步作业的状态。
Polling for the Status of an Asynchronous Operation.
轮询非同步作业的状态。
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