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• How to implement a custom datasource both as a server and client side datasource.
• What the TreeGrid Facade Pattern is and how you can implement a solution for it.
• How to issue a request to another datasource from the custom datasource and the difference between doing it client side versus server side.

Worth Reading

Throughout this article there are links referencing material worth a read such as the javadoc for specific classes so here is a list of all the referenced material including some extra bits which are worth a read in relevance to this subject.

• Writing Custom DataSource
• Tree Data Binding