Fast Object Database for Java - with JPA/JDO support

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2

flush()

Methodjavax.jdo.PersistenceManager void flush() Flushes all dirty, new, and deleted instances to the data store. It has no effect if a transaction is not active. If a datastore transaction is active, this method synchronizes the cache with the datastore and reports any exceptions. If an optimistic
2

javax.persistence.OrderColumn

is responsible for updating the ordering upon flushing to the database to reflect any insertion, deletion
2

ClassCastException thrown when running count query

i have inserted. I'm currently evaluating your product. So i insert and delete a lot of data. I ... enforce reference integrity and it is the application responsibility to avoid deletion from the database ... will be produced. support Support The orphan Position records are there because i deleted some Units
2

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
2

deletePersistentAll(pcs)

Method javax.jdo.PersistenceManager void deletePersistentAll( Object... pcs ) Delete an array of instances from the data store. Parameters: pcs - a Collection of persistent instances Since: JDO 1.0 See Also: deletePersistent(Object pc)
2

flush()

Method javax.jdo.PersistenceManager void flush() Flushes all dirty, new, and deleted instances to the data store. It has no effect if a transaction is not active. If a datastore transaction is active, this method synchronizes the cache with the datastore and reports any exceptions. If an optimistic
2

getSingleResult()

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

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
2

getSingleResult()

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

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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