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| − | {{EclipseLink_UserGuide
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| − | |eclipselink=y
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| − | |eclipselinktype=MOXy
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| − | |info=y
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| − | |api=y
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| − | |apis= * [http://www.eclipse.org/eclipselink/api/latest/org/eclipse/persistence/jaxb/metadata/MetadataSource.html MetadataSource]
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| − | * [http://www.eclipse.org/eclipselink/api/latest/org/eclipse/persistence/jaxb/metadata/MetadataSourceAdapter.html MetadataSourceAdapter]
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| − | * [http://www.eclipse.org/eclipselink/api/latest/org/eclipse/persistence/jaxb/metadata/XMLMetadataSource.html XMLMetadataSource]
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| − | * [http://www.eclipse.org/eclipselink/api/latest/org/eclipse/persistence/jaxb/xmlmodel/XmlBindings.html XmlBindings]
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| − | |toc=y
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| − | }}
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| − | = XML MetadataSource =
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| − | 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.
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| − | == Implementing a MetadataSource ==
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| − | To implement your own '''MetadataSource''', you can:
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| − | * Create a new class that implements the '''org.eclipse.persistence.jaxb.metadata.MetadataSource''' interface.
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| − | * Create a new class that extends the '''org.eclipse.persistence.jaxb.metadata.MetadataSourceAdapter''' class. Using this method is preferred, as it will insulate you from future additions to the interface.
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| − | In either case, you will be responsible for implementing the following method:
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| − | <div style="width:700px">
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| − | <source lang="java">
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| − | /**
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| − | * Retrieve XmlBindings according to the JAXBContext bootstrapping information.
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| − | *
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| − | * @param properties - The properties passed in to create the JAXBContext
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| − | * @param classLoader - The ClassLoader passed in to create the JAXBContext
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| − | * @return the XmlBindings object representing the metadata
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| − | */
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| − | XmlBindings getXmlBindings(Map<String, ?> properties, ClassLoader classLoader);
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| − | </source>
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| − | </div>
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