Category Archives: Persistence


DataNucleus started out as JPOX, which started as TJDO. This had support for RDBMS, and in particular JDOQL querying. Unfortunately the TJDO process for JDOQL was a sequential parse of the query string, generating the SQL for the query. While … Continue reading

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JDO 2.3 Metadata API

Defining how classes are to be persisted has always been a subjective part of any persistence process. Some people like XML, some like annotations, and some want it all to be done magically with a sprinkle of stardust. JDO has … Continue reading

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