A simple implementation of {@link org.apache.tapestry5.grid.GridDataSource} based on a Hibernate Session and a knownentity class. This implementation does support multiple {@link org.apache.tapestry5.grid.SortConstraint sortconstraints}; however it assumes a direct mapping from sort constraint property to Hibernate property.
This class is
not thread-safe; it maintains internal state.
Typically, an instance of this object is created fresh as needed (that is, it is not stored between requests).