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XML MetadataSource
EclipseLink 2.3 introduces the concept of a MetadataSource, which is responsible for serving up EclipseLink metadata. This allows you to store mapping information outside of your application and have it retrieved when the application's JAXBContext is being created or refreshed.
Implementing a MetadataSource
To implement your own MetadataSource, you can:
- Create a new class that implements the org.eclipse.persistence.jaxb.metadata.MetadataSource interface
- Create a new class that extends the org.eclipse.persistence.jaxb.metadata.MetadataSourceAdapter class
Using the MetadataSourceAdapter is preferred, as it will insulate you from future additions to the interface.