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XML Object



hi,

In case of multiple users accessing the same xml object with the same login ,

ExternalTransaction tx = database.newTransaction();
                tx.begin();
                tx.join();like that 

in case of the above soon after connection to the RemoteDatabase().
are the users put in a queue so that the next user can read from the same xml
object only after the first user has commited the transaction. thereby locking
the xml object ??.
or can many users access the same xml object at the same instance of time.??
if not
in case of 100's of users using the same xml object for data. won't the system
be too slow in traversing the entire dom tree structure, getting the data,
commiting and then allowing the next user access to the same xml object. so
each user will have to wait for ??
can someone please explain how the Query.java given in the samples, which
Queries the xml object, work for multi-users aceesing the same xml object at
nearly the same instance of time.

bye 
 



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