These are the respective implementations of each abstract class and interface in the message queue framework interface package.

它们分别是消息队列框架接口包中每个抽象类和接口的实现。

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It is common in object-oriented development to abstract out a common interface that may have multiple implementations and write code that works with the interface, making it more reusable.

在面向对象的开发中，有一种实践很常见：抽象出一个可能拥有多个实现的接口并编写代码以使用该接口，从而使其可以重复利用。

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The use of pure abstract C++ explicit interface classes worked against true service invocation transparency, because service clients on non-C++ systems required alternative interface definitions.

使用纯粹的抽象 C++ 显式接口类与真正的服务调用透明性是矛盾的，因为非 C++ 系统中的服务客户机需要备用的接口定义。

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