org.exolab.castor.jdo.engine

Class JDOCallback

Implemented Interfaces:
CallbackInterceptor

public class JDOCallback
extends java.lang.Object
implements CallbackInterceptor

Version:
$Revision: 1.1.1.1 $ $Date: 2003/03/03 07:08:17 $
Author:
Assaf Arkin

Method Summary

void
created(Object object)
Called to indicate that an object has been created.
void
creating(Object object, Database db)
Called to indicate that an object is to be created in persistent storage.
Class
loaded(Object object, short accessMode)
Called to indicate that the object has been loaded from persistent storage.
void
releasing(Object object, boolean committed)
Called to indicate that an object has been made transient.
void
removed(Object object)
Called to indicate that an object has been deleted.
void
removing(Object object)
Called to indicate that an object is to be deleted.
void
storing(Object object, boolean modified)
Called to indicate that an object is to be stored in persistent storage.
void
updated(Object object)
Called to indicate that an object has been updated at the end of a "long" transaction.
void
using(Object object, Database db)
Called to indicate that an object has been made persistent.

Method Details

created

public void created(Object object)
            throws Exception
Called to indicate that an object has been created.
Specified by:
created in interface CallbackInterceptor
Parameters:
object - The object

creating

public void creating(Object object,
                     Database db)
            throws Exception
Called to indicate that an object is to be created in persistent storage.
Specified by:
creating in interface CallbackInterceptor
Parameters:
object - The object
db - The database in which this object will be created

loaded

public Class loaded(Object object,
                    short accessMode)
            throws Exception
Called to indicate that the object has been loaded from persistent storage.
Specified by:
loaded in interface CallbackInterceptor
Parameters:
object - The object
Returns:
null or the extending Class. In the latter case Castor will reload the object of the given class with the same identity.

releasing

public void releasing(Object object,
                      boolean committed)
Called to indicate that an object has been made transient.

This method is made at commit or rollback time on all objects that were presistent during the life time of the transaction.

Specified by:
releasing in interface CallbackInterceptor
Parameters:
object - The object
committed - True if the object has been commited, false if rollback or otherwise cancelled

removed

public void removed(Object object)
            throws Exception
Called to indicate that an object has been deleted.

This method is called during db.remove().

Specified by:
removed in interface CallbackInterceptor
Parameters:
object - The object

removing

public void removing(Object object)
            throws Exception
Called to indicate that an object is to be deleted.

This method is made at commit time on objects deleted during the transaction before setting their fields to null.

Specified by:
removing in interface CallbackInterceptor
Parameters:
object - The object

storing

public void storing(Object object,
                    boolean modified)
            throws Exception
Called to indicate that an object is to be stored in persistent storage.
Specified by:
storing in interface CallbackInterceptor
Parameters:
object - The object
modified - Is the object modified?

updated

public void updated(Object object)
            throws Exception
Called to indicate that an object has been updated at the end of a "long" transaction.
Specified by:
updated in interface CallbackInterceptor
Parameters:
object - The object

using

public void using(Object object,
                  Database db)
Called to indicate that an object has been made persistent.
Specified by:
using in interface CallbackInterceptor
Parameters:
object - The object
db - The database to which this object belongs

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