org.deri.iris.optimisations.magicsets
Class MagicSets

java.lang.Object
  org.deri.iris.optimisations.magicsets.MagicSets

All Implemented Interfaces:

IProgramOptimisation

public final class MagicSets
extends Object
implements IProgramOptimisation

Simple implementation of the "Generalized Magic Sets" according to the "The Power of Magic" paper.

Author:

Richard P??ttler (richard dot poettler at deri sti2 at)

Nested Class Summary

Nested classes/interfaces inherited from interface org.deri.iris.api.IProgramOptimisation

IProgramOptimisation.Result

Constructor Summary

MagicSets()

Method Summary

IProgramOptimisation.Result

optimise(Collection<IRule> rules, IQuery query) Applies the optimisation algorithm to a set of rules.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MagicSets

public MagicSets()

Method Detail

optimise

public IProgramOptimisation.Result optimise(Collection<IRule> rules,
                                            IQuery query)

Description copied from interface: IProgramOptimisation

Applies the optimisation algorithm to a set of rules. A Result which contains the transformed rules and the adjusted query.

Specified by:

optimise in interface IProgramOptimisation

Parameters:

rules - the rules to transform

query - the query for which to transform the rules

Returns:

a optimisation result or null, if the transformation failed.