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Old 02-22-2007, 11:12 PM   #1 (permalink)
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Question Can we delete specific contents of DataBase

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I want to delete some contents of my previously stored data
OR
suppose if I store my vector in data base
synchronized(store)
{
store.setContents(vec1);
store.commit();
}

and after this if i again store a vector suppose
synchronized(store)
{
store.setContents(vec2);
store.commit();
}

then what contents are present in my database ?
1 . Only vec2
2 . Both vec1 and vec2
if both plz tell me the way to delete vec1

Last edited by Rojiwadiya dinesh : 02-23-2007 at 02:36 AM.
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Old 02-23-2007, 05:33 AM   #2 (permalink)
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setContents sets the contents of that persistenStore to whatever object you pass it - so in your above scenario the resulting content will be vec2

if you want to wipe data you should use:

PersistentStore.destroyPersistentObject(0x888HASHS TRING588L);
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Old 02-23-2007, 05:51 AM   #3 (permalink)
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If you have a vector that is stored in your persistent store and you want to remove a value then remove the value from the vector and store it again.

For example

Code:
void remove(Object o)
{
    vector.remove(o);
    setStore(vector);
}
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Old 02-23-2007, 07:29 AM   #4 (permalink)
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Thanks !
It is working fine
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