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2

Blocked by find

.createQuery("DELETE FROM DataHolder d WHERE d.containerId = :containerId"); query.setParameter ... . Then it starts up 2 groups of 10 threads, one group is persisting more data, the other group is deleting the first set of data via delete statements. Eventually the test seems to grid to a halt - it needs
2

References to objects of missing obsolete entity classes

are in the database but their classes have been deleted or missing? This is abnormal state ... itself, is it correct that the objects are in the database but their classes have been deleted or missing ... of deleting classes using the Explorer, so it may be related. We cannot reproduce the exceptions
2

createNativeQuery(sqlString)

Method javax.persistence.EntityManager Query createNativeQuery( String sqlString ) Create an instance of Query for executing a native SQL statement, e.g., for update or delete. Parameters: sqlString - a native SQL query string Returns: the new query instance Since: JPA 1.0
2

getSingleResult()

query language UPDATE or DELETE statement QueryTimeoutException - if the query execution exceeds
2

getResultList()

Method javax.persistence.Query List getResultList() Execute a SELECT query and return the query results as an untyped List. Returns: a list of the results Throws: IllegalStateException - if called for a Java Persistence query language UPDATE or DELETE statement QueryTimeoutException - if the query
0

isDirty(pc)

Method javax.jdo.spi.StateInterrogation Boolean isDirty( Object pc ) Tests whether the parameter instance is dirty. Instances that have been modified, deleted, newly made persistent in the current transaction, or modified while detached return Boolean.TRUE. Instances known by the implementation
0

javax.jdo.annotations.ForeignKeyAction

javax.jdo.annotations Enum ForeignKeyAction java.lang.Object java.lang.Enum<javax.jdo.annotations.ForeignKeyAction> javax.jdo.annotations.ForeignKeyAction Implemented Interfaces: Serializable, Comparable<ForeignKeyAction> Enumeration of the foreign-key delete/update action values
0

javax.jdo.listener.InstanceLifecycleEvent

int CLEAR Since: JDO 2.0 int CREATE Since: JDO 2.0 int DELETE Since: JDO 2.0 int DETACH Since: JDO
0

isDirty(pc)

Static Method javax.jdo.JDOHelper boolean isDirty( Object pc ) Tests whether the parameter instance is dirty. Instances that have been modified, deleted, or newly made persistent in the current transaction return true. Transient instances and instances of classes that do not implement
0

deletePersistentAll(pcs)

Method javax.jdo.PersistenceManager void deletePersistentAll( Collection pcs ) Delete a Collection of instances from the data store. Parameters: pcs - a Collection of persistent instances Since: JDO 1.0 See Also: deletePersistent(Object pc)

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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