The article quoted below presents one implementation of displaying the result of a complex query by using JPA Named Queries. As an exercise, as I am now studying ADF "View Criteria", I shall try to achieve the same result by using ADF-BC.
"Displaying Employee (HR schema) records in Hierarchical Tree can be achieved in ADF-BC by creating custom VO and a Viewlink for displaying root node.This can be more easily done using EJB-DC by just introducing a NamedQuery to get the root node."
Display root node of Hierarchical Tree using ADF - EJB DC
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