/**
* @return the default heuristics to be applied always on a set of triple patterns to be joined
*/
protected static List<SplitHeuristic> getApplyAlwaysHeuristics(){
final List<SplitHeuristic> applyAlwaysHeuristics = new LinkedList<SplitHeuristic>();
applyAlwaysHeuristics.add(new SplitCartesianProduct());
return applyAlwaysHeuristics;
}