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DataNucleus

UK

datanucleus.org

Specialist in JDO/JPA Java persistence since 2003, and member of JDO expert group

Commercial DataNucleus support available from DataNucleus.com

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Top Answers

Java AppEngine: JDO or JPA, How to choose?

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JDO vs JPA for Java on Google App Engine

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Hibernate vs JPA vs JDO - pros and cons of each?

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Whats the difference between JPA and JDO specifications?

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Validating jdoconfig with incorrect url

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AppEngine datastore: “Object with id … is managed by a different Object Manager”

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JPA 2 Criteria Fetch Path Navigation

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JPA CascadeType.ALL does not work by query?

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What is the fastest way to learn JPA?

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JPA: is merging ever necessary for attached entities?

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Switch from Google AppEngine to another server

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Do you like the Criteria api of JPA 2.0? Do you use it with framework?

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Conflicting versions of datanucleus enhancer in a maven google app engine project

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JPA Criteria API missing

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Google app engine - what is the lifecycle of PersistenceManager?

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Multiple Threads accessing the database: one with long transaction, one with short transactions

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Does JPA only refer to RDBMS

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JPA Array Mapping

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Entity with two IDs

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Can't ORDER BY a column in JPQL

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