A progress report on query compilation: I've now got to the point where I can compile the knight's tour query (tour.xq in the Saxon samples distribution) into Java code, and execute it with correct results. It's running in 39.3ms, compared with 45.9ms for the interpreted code, which isn't wildly exciting, but there's enormous scope for tuning the generated code and it shouldn't be hard to improve on this figure very significantly.   more »