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Java Source Code / Java Documentation » Database DBMS » db4o 6.4 » com.db4o.events

Source Cross Reference Class Diagram Java Document (Java Doc)

com.db4o.events .EventRegistry

All known Subclasses:   com.db4o.internal.events .EventRegistryImpl,
EventRegistry
public interface EventRegistry (Code)
Provides the interface to register event handlers for com.db4o.ObjectContainer events.
EventRegistry methods represent events available for registering callbacks. An EventRegistry instance can be obtained from the EventRegistryFactory . EventRegistry registry = EventRegistryFactory.forObjectContainer(container); A new callback can be registered for an event with the following code: registry.created().addListener(new EventListener4(){...});
See Also:   EventRegistryFactory
See Also:   EventListener4

Method Summary
public Event4 activated()
     This event is fired after an object is activated. The object can be obtained from the ObjectEventArgs event parameter.
public Event4 activating()
     This event is fired before an object is activated. The object can be obtained from CancellableObjectEventArgs event parameter.
public Event4 classRegistered()
     This event is fired when a new class is registered with metadata.
public Event4 committed()
     This event is fired after a transaction has been committed.
public Event4 committing()
     This event is fired after a transaction has been committed.
public Event4 created()
     This event is fired after an object is created (saved for the first time).
public Event4 creating()
     This event is fired before an object is saved for the first time. The object can be obtained from CancellableObjectEventArgs event parameter.
public Event4 deactivated()
     This event is fired after an object is deactivated.
public Event4 deactivating()
     This event is fired before an object is deactivated. The object can be obtained from CancellableObjectEventArgs event parameter.
public Event4 deleted()
     This event is fired after an object is deleted.
public Event4 deleting()
     This event is fired before an object is deleted. The object can be obtained from CancellableObjectEventArgs event parameter.
public Event4 instantiated()
     This event is fired when a persistent object is instantiated.
public Event4 queryFinished()
     This event is fired upon a query end and can be used to gather query statistics.
public Event4 queryStarted()
     This event is fired upon a query start and can be used to gather query statistics.
public Event4 updated()
     This event is fired after an object is updated.
public Event4 updating()
     This event is fired before an object is updated. The object can be obtained from CancellableObjectEventArgs event parameter.

Method Detail
activated
public Event4 activated()(Code)
This event is fired after an object is activated. The object can be obtained from the ObjectEventArgs event parameter.

The event can be used to trigger some post-activation functionality. event
See Also:   ObjectEventArgs
See Also:   com.db4o.ObjectContainer.activate(Objectint)

activating
public Event4 activating()(Code)
This event is fired before an object is activated. The object can be obtained from CancellableObjectEventArgs event parameter. The action can be cancelled using CancellableObjectEventArgs.cancel event
See Also:   CancellableObjectEventArgs
See Also:   com.db4o.ObjectContainer.activate(Objectint)

classRegistered
public Event4 classRegistered()(Code)
This event is fired when a new class is registered with metadata. The class information can be obtained from ClassEventArgs event parameter. event
See Also:   ClassEventArgs

committed
public Event4 committed()(Code)
This event is fired after a transaction has been committed. The transaction and a list of the modified objects can be obtained from the CommitEventArgs event parameter.

The event can be used to trigger some post-commit functionality. event
See Also:   CommitEventArgs
See Also:   com.db4o.ObjectContainer.commit

committing
public Event4 committing()(Code)
This event is fired after a transaction has been committed. The transaction and a list of the modified objects can be obtained from the CommitEventArgs event parameter.

Committing event gives a user a chance to interrupt the commit and rollback the transaction. event
See Also:   CommitEventArgs
See Also:   com.db4o.ObjectContainer.commit

created
public Event4 created()(Code)
This event is fired after an object is created (saved for the first time). The object can be obtained from the ObjectEventArgs event parameter.

The event can be used to trigger some post-creation functionality. event
See Also:   ObjectEventArgs
See Also:   com.db4o.ObjectContainer.set(Object)

creating
public Event4 creating()(Code)
This event is fired before an object is saved for the first time. The object can be obtained from CancellableObjectEventArgs event parameter. The action can be cancelled using CancellableObjectEventArgs.cancel event
See Also:   CancellableObjectEventArgs
See Also:   com.db4o.ObjectContainer.set(Object)

deactivated
public Event4 deactivated()(Code)
This event is fired after an object is deactivated. The object can be obtained from the ObjectEventArgs event parameter.

The event can be used to trigger some post-deactivation functionality. event
See Also:   ObjectEventArgs
See Also:   com.db4o.ObjectContainer.delete(Object)

deactivating
public Event4 deactivating()(Code)
This event is fired before an object is deactivated. The object can be obtained from CancellableObjectEventArgs event parameter. The action can be cancelled using CancellableObjectEventArgs.cancel event
See Also:   CancellableObjectEventArgs
See Also:   com.db4o.ObjectContainer.deactivate(Objectint)

deleted
public Event4 deleted()(Code)
This event is fired after an object is deleted. The object can be obtained from the ObjectEventArgs event parameter.

The event can be used to trigger some post-deletion functionality. event
See Also:   ObjectEventArgs
See Also:   com.db4o.ObjectContainer.delete(Object)

deleting
public Event4 deleting()(Code)
This event is fired before an object is deleted. The object can be obtained from CancellableObjectEventArgs event parameter. The action can be cancelled using CancellableObjectEventArgs.cancel event
See Also:   CancellableObjectEventArgs
See Also:   com.db4o.ObjectContainer.delete(Object)

instantiated
public Event4 instantiated()(Code)
This event is fired when a persistent object is instantiated. The object can be obtained from the ObjectEventArgs event parameter. event
See Also:   ObjectEventArgs

queryFinished
public Event4 queryFinished()(Code)
This event is fired upon a query end and can be used to gather query statistics. The query object is available from QueryEventArgs event parameter.
event
See Also:   QueryEventArgs

queryStarted
public Event4 queryStarted()(Code)
This event is fired upon a query start and can be used to gather query statistics. The query object is available from QueryEventArgs event parameter.
event
See Also:   QueryEventArgs

updated
public Event4 updated()(Code)
This event is fired after an object is updated. The object can be obtained from the ObjectEventArgs event parameter.

The event can be used to trigger some post-update functionality. event
See Also:   ObjectEventArgs
See Also:   com.db4o.ObjectContainer.set(Object)

updating
public Event4 updating()(Code)
This event is fired before an object is updated. The object can be obtained from CancellableObjectEventArgs event parameter. The action can be cancelled using CancellableObjectEventArgs.cancel event
See Also:   CancellableObjectEventArgs
See Also:   com.db4o.ObjectContainer.set(Object)

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