Fast Object Database for Java - with JPA/JDO support

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9

javax.persistence.EntityNotFoundException

EntityManager.getReference is accessed but the entity does not exist. Thrown when EntityManager.refresh ... (Class,Object) EntityManager.refresh(Object) EntityManager.refresh(Object, LockModeType) EntityManager.refresh(Object, java.util.Map) EntityManager.refresh(Object, LockModeType, java.util.Map
8

refreshAll()

Method javax.jdo.PersistenceManager void refreshAll() Refresh the state of all applicable instances from the data store. If called with an active transaction, all transactional instances will be refreshed. If called outside an active transaction, all nontransactional instances will be refreshed. Since: JDO 1.0 See Also: refresh(Object pc)
8

javax.persistence.CascadeType

cascade=ALL is equivalent to cascade={PERSIST, MERGE, REMOVE, REFRESH, DETACH}. Since: JPA 1.0 ... operation Since: JPA 1.0 CascadeType REFRESH Cascade refresh operation Cascade refresh operation
7

refreshAll(pcs)

Method javax.jdo.PersistenceManager void refreshAll( Collection pcs ) Refresh the state of a Collection of instances from the data store. Parameters: pcs - the Collection of instances to refresh. Since: JDO 1.0 See Also: refresh(Object pc)
7

javax.persistence.CacheStoreMode

BYPASS Don't insert into cache. Don't insert into cache. Since: JPA 2.0 CacheStoreMode REFRESH Insert ... /update entity data into cache when read from database and when committed into database. Forces refresh ... : this is the default behavior. Does not force refresh of already cached items when reading from database
7

refreshAll(pcs)

Method javax.jdo.PersistenceManager void refreshAll( Object... pcs ) Refresh the state of an array of instances from the data store. Parameters: pcs - the array of instances to refresh. Since: JDO 1.0 See Also: refresh(Object pc)
7

OptimisticLockException

to be automatically updated in process A. So, do I need to refresh objects before using them? I would have thought ... invoking refresh. You may choose to do that only during a second attempt after an optimistic ... to handle the optimistic lock by manually refreshing each object? if so, it seems like a huge
5

Exception makes the system unusable for several minutes

(TVS.java:105) at com.objectdb.o.TVS.b(TVS.java:94) at com.objectdb.jpa.EMImpl.refresh(EMImpl.java:746) at com.objectdb.jpa.EMImpl.refresh(EMImpl.java:687) at com.objectdb.jdo.PMImpl.refresh(PMImpl.java:976) at com.agile.hummingbird.CoreDaemon.refresh(CoreDaemon.java:566
4

new objects not available in mappedBy associations

automatically when the object is retrieved from the database again. Try to refresh the department object ... is set to use FlushModeType.AUTO). support Support What does this mean: "Try to refresh the department object" ? How does one refresh an object? If the mappedby tag maps to: SELECT e from EMPLOYEE e
4

refreshAll(jdoe)

Method javax.jdo.PersistenceManager void refreshAll( JDOException jdoe ) Refreshes all instances in the exception that failed verification. Parameters: jdoe - Since: JDO 2.0

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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