Examples of edu.brown.optimizer.optimizations.AbstractOptimization.optimize()

Package edu.brown.optimizer.optimizations

Class edu.brown.optimizer.optimizations.AbstractOptimization

Examples of edu.brown.optimizer.optimizations.AbstractOptimization.optimize()

edu.brown.optimizer.optimizations.AbstractOptimization.optimize()
Perform the optimization on the given PlanNode tree Returns a pair containing the new root of the tree a boolean flag that signals whether the tree was modified or not @param rootNode @return

            try {
                AbstractOptimization opt = ClassUtil.newInstance(optClass,
                                                                 new Object[] { state },
                                                                 new Class<?>[] { PlanOptimizerState.class });
                assert (opt != null);
                Pair<Boolean, AbstractPlanNode> p = opt.optimize(new_root);
                if (p.getFirst()) {
                    if (debug.val)
                        LOG.debug(String.format("%s modified query plan", optClass.getSimpleName()));
                    new_root = p.getSecond();
                }

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