Extensions : MetaData Handler


DataNucleus has supported JDO metadata from the outset. More than this, it actually provides a pluggable framework whereby you can plug in your own MetaData support. DataNucleus provides JDO and JPA metadata support, as well as persistence.xml. You can extend DataNucleuss capabilities using the plugin extension org.datanucleus.metadata_handler.

Plugin extension-point Key Description Location
org.datanucleus.metadata_handler jdo JDO MetaData handler datanucleus-api-jdo
org.datanucleus.metadata_handler persistence "persistence.xml" MetaData handler datanucleus-core
org.datanucleus.metadata_handler jpa JPA MetaData handler datanucleus-api-jpa