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Setting temp directory location in ObjectDB

to store the objects and reading objects from the fileName.odb. When pm.currentTransaction().begin

Strange behaviour with ORDER BY and IN

().begin();                em.getMetamodel().entity(Location.class);         //clean

Error with org.springframework.data.jpa.domain.AbstractPersistable

");         EntityManager em = emf.createEntityManager();         em.getTransaction().begin();         em.persist

How to use JOIN FETCH?

().begin();   Person p = new Person();   p.setName("Peter Smith");   Address address1 = new Address

Query results are not up to date for entities, not primitives

(); tr   .begin(); em2   .createQuery(     "UPDATE PersonData SET"      + " personCode

Error 363 - Failed to read value of inverse relationship

) {         EntityTransaction tr = db.getTransaction();         try {             tr.begin();             db

IMK Stall with certain query

: String param = "%"+begining+"%"; CriteriaBuilder cb = DataBase.em.getCriteriaBuilder(); CriteriaQuery

Felix, rollback exception, error 613

Hello, i have a problem under felix osgi environment. I tested both 2.6.0 & 2.7.5 versions. I can begin, persist and commit once, but not twice; even after framework restart. I need to delete my database file. I joined my jee/bndtools workspace. I needed to change the classloader to properly

Error 990 when querying a class with persistence-capable-superclass

by multiple begin and commit transaction IRule rule = new Rule();   ...     dbService

NullPointer when accessing entity field

: - we create EntityManager for this thread, store in ThreadLocal, (if not exists), begin

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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