it.unibz.inf.ontop.iq.planner

Interface QueryPlanner

All Known Implementing Classes:

AvoidJoinAboveUnionPlanner, DummyQueryPlanner

public interface QueryPlanner

By contrast to structural and semantic optimizations, the query planner can explore decisions that "it might regret afterwards" in isolated branches. Serious query planners are supposed to take into account statistical information about the data source, while structural and semantic optimizations do not consider this kind of information.

Method Summary

Modifier and Type	Method and Description
IQ	optimize(IQ query, ExecutorRegistry executorRegistry) TODO: get rid of the executor registry and inherit IQOptimizer

Method Detail

optimize

IQ optimize(IQ query,
            ExecutorRegistry executorRegistry)

TODO: get rid of the executor registry and inherit IQOptimizer