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Java Development

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Developer
Posts: 35
Registered: ‎11-26-2008
My Device: 8100

how to clear or reset persistent store object

i am using JDE 4.7 with storm simulator

 

i am developing favourite app

i can add things to favourite list

but i can not delete from that list

 

first i create the persistent object with one specified ID

then i use setContent method to add into list

i am adding Vector type object

 

for deleting item from the list, i get contents from the persistent store object

then delete the particular item and rebuild the vector and then add it to store object

 

but this will not work as in store object, i have to clear previous contents

then can add newly rebuilded vector 

 

but i do not know how to reset or clear persistent object without changing it;s long hexadecimal ID

 

please help me

Developer
Posts: 3,951
Registered: ‎07-15-2008
My Device: Not Specified

Re: how to clear or reset persistent store object

[ Edited ]

You can use "destroyPersistantObject" method of "PersistentStore". Use the same ID and create persitent object.

 

Tnq.

Message Edited by BBDeveloper on 01-16-2009 05:47 PM

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Developer
Posts: 5,339
Registered: ‎09-20-2008
My Device: ***
My Carrier: ***

Re: how to clear or reset persistent store object

[ Edited ]

What error did you get ?

 

If you use the same unid to store the object the previous object will be rewritten.

 

It is not necessary to delete the object.

 

Also I recommend to create a wrapper class that contains Vector and store/load this class.

 

Otherwise your persistent data will remain on device memory when your application uninstalled.

Message Edited by tbilisoft on 16-01-2009 12:36 PM