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Converting JPA entities to/from XML (via JAXB)

JPA provides an easy and powerful means to use Java objects to interact with a relational database. These Java objects are called entities, and have their own characteristics. Some of these characteristics (bidirectional relationships, compound keys, embedded key classes, and lazy loading) can cause challenges when mapping these objects to XML. This example demonstrates how to easily overcome these challenges using EclipseLink MOXy (JAXB):

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