Category Archives: java

Configuring persistence of fields/properties using TypeConverters with JDO

JPA 2.1 allows a user to specify a converter on the value of a field/property for how it is persisted in the datastore. The way we implement that in DataNucleus is to have the JPA converter as a wrapper to … Continue reading

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JPQL2

As mentioned earlier DataNucleus querying capabilities are being progressively rewritten, making use of a “generic” query compilation. In the previous post I mentioned a new implementation of JDOQL. This now implements the vast majority of querying capabilities required with one … Continue reading

Posted in DataNucleus, java, JDO, JDOQL, JPA, JPQL, Persistence | Leave a comment