Store persistent data

Search This Document

Download PDF

Import the following classes:
- net.rim.device.api.system.PersistentStore
- net.rim.device.api.system.PersistentObject
Invoke setContents() on a PersistentObject. This method replaces existing content with the new content.

To save the new content to the persistent store, invoke commit().

String[] userinfo = {username, password};
synchronized(store) {
store.setContents(userinfo); 
store.commit();
}

To use a batch transaction to commit objects to the persistent store, invoke PersistentStore.getSynchObject(). This method retrieves the persistent store monitor that locks the object.
1. Synchronize on the object.
2. Invoke commit() as necessary. If any commit in the batch fails, the entire batch transaction fails.
To commit a monitor object separately from a batch transaction, invoke forceCommit() while synchronizing the monitor object.

Parent topic: Persistent data storage