= ebXML Persistence =

This page describes GeoNetwork's implementation of a Persistence Layer to the ebXML Object Model.
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=== Introduction ===

The [wiki:ebXMLObjectModel ebXML Object Model] has the capability of being persisted to permanent storage (a database). In order to achieve a vendor-independent code base and to maintain the Object Oriented paradigm in the face of the Relational paradigm employed by databases, we use [http://www.hibernate.org/ Hibernate] as an Object/Relational Mapping tool. [http://www.hibernate.org/ Hibernate] was chosen over other solutions such as [http://java.sun.com/products/ejb/ EJB 3.0] as that would require a J2EE container for runtime platform. We're not using the Hibernate framework within the confines of the [http://java.sun.com/javaee/technologies/persistence.jsp JPA] specification at this moment, although this is open to debate.

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=== Implementation details ===

Here is a list of design decisions regarding the Hibernate mapping.