DataNucleus is developed as a plugin-driven framework and one of the components that is pluggable is to allow definition of persistence properties. These properties are used by plugins and allow configurability of behaviour. Any plugin can define its own properties.
You can define persistence properties using the plugin extension _org.datanucleus.persistenceproperties.
The only thing required is to register the persistence property with DataNucleus via the plugin.xml. Heres an example
<?xml version="1.0"?> <plugin id="mydomain" name="DataNucleus plug-ins" provider-name="My Company"> <extension point="org.datanucleus.persistence_properties <persistence-property name="datanucleus.magicBehaviour" value="false" validator="org.datanucleus.properties.BooleanPropertyValidator"/>"> </extension> </plugin>
Note that you also require a MANIFEST.MF file as per the Extensions Guide. Note also