This framework is described in much better detail in the Financial Model Framework paper.
The framework is designed for dynamic retrieving and storing objects from/to a relational database.
Communication of query objects with a database is mainly handled by QueryDataManager. QueryDataManager class keeps track of the LensDataModel instance currently active. It also extends functionality of ParcPlace's LensDataManager by providing protocols for storing records and objects to a database.
Relevant classes and categories:
There is also a good paper describing the QueryObjects and the relevant patterns by John Brant and Joe Yoder.
Joseph W. Yoder at:(217) 344-4847 or by email: firstname.lastname@example.org
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