Like JDBC, JMS is a low level API requiring you to create and manage multiple intermediary objects even for the most basic of JMS tasks.
像JDBC一样，JMS是一个底层api，它需要你为JMS的绝大部分基础任务来创建并管理中间对象。
All of the examples here assume that ultimately you'll be using the formatting objects as an intermediary to achieve a conversion to PDF.
这里的所有示例都假定您最终将使用格式化对象作为实现至pdf转换的中间产物。
Suppose that you wanted to isolate a subsystem, so that client code would have to go through an intermediary to access worker objects (this situation occurs in the Facade design pattern).
假如您希望隔离一个子系统，以使客户机代码必须通过中间媒介来访问工作程序对象(这种情况在Facade设计模式中出现)。
Suppose that you wanted to isolate a subsystem, so that client code would have to go through an intermediary to access worker objects (this situation occurs in the Facade design pattern).
假如您希望隔离一个子系统，以使客户机代码必须通过中间媒介来访问工作程序对象(这种情况在Facade设计模式中出现)。
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