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7

javax.persistence.CascadeType

cascade=ALL is equivalent to cascade={PERSIST, MERGE, REMOVE, REFRESH, DETACH}. Since: JPA 1.0 CascadeType ALL Cascade all operations Cascade all operations Since: JPA 1.0 CascadeType DETACH Cascade detach operation Cascade detach operation Since: JPA 2.0 CascadeType MERGE Cascade merge operation
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detachCopy(pc)

Method javax.jdo.PersistenceManager T detachCopy( T pc ) Detach the specified instance from the PersistenceManager. The flags for detachment (DETACH_LOAD_FIELDS and DETACH_UNLOAD_FIELDS ... : pc - the instance to detach Returns: the detached instance Since: JDO 2.0 See Also: detachCopyAll(Object[])
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setDetachAllOnCommit(flag)

, during beforeCompletion all cached instances are prepared for detachment according to the fetch plan in effect ... callback, all detachable persistent instances in the cache transition to detached; non-detachable persistent instances transition to transient; and detachable instances can be serialized as detached
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replacingDetachedState(pc, state)

Method javax.jdo.spi.StateManager Object[] replacingDetachedState( Detachable pc, Object[] state ) The replacement value of the detached state in the calling instance. Parameters: pc - the calling Detachable instance state - the current value of the detached state Returns: the replacement value for the detached state Since: JDO 2.0
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javax.jdo.spi.PersistenceCapable

is persistent, transactional, dirty, new, deleted, or detached; and to get its associated ... .deletePersistent(Object pc) boolean jdoIsDetached() Tests whether this object has been detached. Tests whether this object has been detached. Instances that have been detached return true. Transient
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javax.jdo.listener.DetachCallback

javax.jdo.listener Interface DetachCallback This interface is used to notify instances of detach events. Since: JDO 2.0 void jdoPostDetach(Object detached) This method is called during the execution of javax.jdo.PersistenceManager.detachCopy on the detached instance after the copy
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javax.jdo.JDOHelper

whether the instance is persistent, transactional, dirty, new, deleted, or detached ... whether the parameter instance has been detached. Tests whether the parameter instance has been detached. Instances that have been detached return true. Transient instances return false. Parameters: pc - the instance
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javax.jdo.PersistenceManagerFactory

specifies that during makePersistent, copies are made of detached parameter instances. With this flag set to false, detached parameter instances are attached directly and change their state from detached-clean to persistent-clean or from detached-dirty to persistent-dirty. Parameters: flag - Since: JDO 2.1
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isDetached(pc)

instance is detached. Instances that are detached return Boolean.TRUE. Instances known by the implementation to be non-detached return Boolean.FALSE. Instances not recognized by the implementation ... is detached. Since: JDO 2.0 See Also: PersistenceManager.detachCopy(Object pc) PersistenceCapable.jdoIsDeleted()
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setCopyOnAttach(flag)

setting. CopyOnAttach set to true specifies that during makePersistent, copies are made of detached parameter instances. With this flag set to false, detached parameter instances are attached directly and change their state from detached-clean to persistent-clean or from detached-dirty to persistent

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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