Returns query runtime parameters. The method is called at various stages of the
execution by Cayenne access stack to retrieve query parameters. EntityResolver
instance is passed to this method, meaning that the query doesn't need to store
direct references to Cayenne mapping objects and can resolve them at runtime.
A callback method invoked by Cayenne during the routing phase of the query
execution. Mapping of DataNodes is provided by QueryRouter. Query should use a
QueryRouter.route(QueryEngine, Query, Query) callback method to route
itself. Query can create one or more substitute queries or even provide its own
QueryEngine to execute itself.
A callback method invoked by Cayenne during the final execution phase of the query
run. A concrete query implementation is given a chance to decide how it should be
handled. Implementors can pick an appropriate method of the SQLActionVisitor to
handle itself, create a custom SQLAction of its own, or substitute itself with
another query that should be used for SQLAction construction.