[Aplaws-devel] [aplaws - Developing on APLAWS+] RE: hibernate and Aplaws

[Aplaws D. L. <apl...@li...>]

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By: jensp1108

Maybe there is an option which allows us to support the JPA and JCR. The JPA
is designed for persisting Java Beans is an relational database. This task is
called Object Relational Mapping (ORM). The JPA uses annotations or XML files
to mark the properties which should be stored into the database.

The Apache Jackrabbit provides something very similar for the JCR. They call
it Object Content Mapping (OCM):
http://jackrabbit.apache.org/object-content-mapping.html. OCM works very similar
to the JPA. The objects to store must be Java Beans, and you mark the properties
to store with annotations or in a XML file.

So if we use XML files for the JPA instead of annotations we can switch very
easily to JCR. The methods needed for reading and writing are very similar,
so that it should be easy to design an interface containing these methods. This
interface would be implemented by a class which maps the methods from the interface
to the concrete methods of the JPA or the Jackrabbit OCM implementation.

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