Essentially, PersistenceManager is the main interface to the JDO persistence system.

基本上，PersistenceManager是JDO持久性系统的主接口。

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When the entire document is parsed, you persist each object in the List with the PersistenceManager.

当整个文件被解析时，您使用PersistenceManager持久化List中的每个对象。

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The PersistenceManager contains generic methods to persist each of the entities in the business model.

PersistenceManager类包含了持久化业务模型中的每一个实体的一般函数。

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