When an OSGi bundle is deployed in the OSGi framework, the beans provided as part of that bundle are registered as services within the framework (in this case, the DBWriter bean).
当在OSGi框架中部署一个osgi捆绑包时，beans提供部分在框架中已注册成为服务的捆绑包(在本例中是DBWriter bean)。
Primarily, these are around the compile-time classpaths, the authoring of the OSGi bundle and application manifests and, optionally, Blueprint bean definition files.
这些考虑主要围绕编译时类路径，以及OSGi bundle、应用程序清单文件及可选的Blueprint bean定义文件的编写。
Within a bundle, fine grained components can be implemented as POJO beans and wired together using a Blueprint bean definition; the internals of one bundle are not visible to other bundles.
在bundle内部，细粒度组件使用一个Blueprint bean定义实现为POJO beans并连接在一起；一个bundle的内部包对其他bundle不可见。
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