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59

Numbers in JPQL and Criteria Queries

operators are supported by JPA: 2 unary operators: + (plus) and - (minus). 4 binary operators
13

ClassCastException of same object type

plugin plus a few fixes allowed the application to work. Transferring the classes back caused
13

@ElementCollection Set<Integer> is emptied sometimes

the class that does that, a @Singleton EJB, plus the affected entity. zmirc Mircea Chirac
13

PersistenceException: Failed to locate field

up? Would be useful to log the location of the config file it is using, plus the contents of that config file, given
13

Activated ObjectDB still throws "Too many persistable types"

on the client side). I have, it is running on the server, using the standard settings (plus the activation
2

Entity Version History

also would be able to avoid the $5000 MySQL Enterprise license which is a plus! ThreaT Ashton Hogan
0

registerClass(event)

Method javax.jdo.spi.RegisterClassListener void registerClass( RegisterClassEvent event ) This method gets called when a persistence-capable class is registered. Parameters: event - a RegisterClassEvent instance describing the registered class plus metadata. Since: JDO 1.0
0

javax.jdo.spi.RegisterClassListener

-capable class is registered. Parameters: event - a RegisterClassEvent instance describing the registered class plus metadata. Since: JDO 1.0

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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