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Dynamically generating composite key for tree grid

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BuildDate Wed Mar 05 15:52:00 IST 2014
Version 4.1p
SCVersionNumber v9.1p_2014-03-05

Team,

http://www.smartclient.com/smartgwt/showcase/#tree_appearance_multicolumns

As in this example can i generate a dynamic data source that recieves data from oracle Db rather than a XML file ?

If yes, how can i achieve that?

Basically i want to do this because i want to generate a compound primary key on the fly because my tree grid is not returning right result in my case.One record overrides other and to avoid that (i want both of them) i need composite key but that has to be dynamically generated that is composite key for each grid will vary.

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