Package org.openrdf.query.algebra.evaluation.util

Examples of org.openrdf.query.algebra.evaluation.util.QueryOptimizerList.optimize()

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      optimizerList.add(new SameTermFilterOptimizer());
      optimizerList.add(new QueryModelPruner());
      optimizerList.add(new QueryJoinOptimizer(new MemEvaluationStatistics()));
      optimizerList.add(new FilterOptimizer());

      optimizerList.optimize(query, bindings);

      logger.trace("Optimized query model:\n{}", query);

      Cursor<BindingSet> iter;
      iter = strategy.evaluate(query, EmptyBindingSet.getInstance());
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      optimizerList.add(new SameTermFilterOptimizer());
      optimizerList.add(new QueryModelPruner());
      optimizerList.add(new QueryJoinOptimizer(new NativeEvaluationStatistics(nativeStore)));
      optimizerList.add(new FilterOptimizer());

      optimizerList.optimize(query, bindings);
      logger.trace("Optimized query model:\n{}", query);

      Cursor<BindingSet> iter;
      iter = strategy.evaluate(query, EmptyBindingSet.getInstance());
      iter = new LockingCursor<BindingSet>(readLock, iter);
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      optimizerList.add(new SameTermFilterOptimizer());
      optimizerList.add(new QueryModelPruner());
      optimizerList.add(new QueryJoinOptimizer(new MemEvaluationStatistics()));
      optimizerList.add(new FilterOptimizer());

      optimizerList.optimize(tupleExpr, dataset, bindings);

      CloseableIteration<BindingSet, QueryEvaluationException> iter;
      iter = strategy.evaluate(tupleExpr, bindings);
      return new LockingIteration<BindingSet, QueryEvaluationException>(stLock, iter);
    }
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      optimizerList.add(new SameTermFilterOptimizer());
      optimizerList.add(new QueryModelPruner());
      optimizerList.add(new QueryJoinOptimizer());
      optimizerList.add(new FilterOptimizer());

      optimizerList.optimize(tupleExpr, dataset, bindings);

      CloseableIteration<BindingSet, QueryEvaluationException> iter;
      iter = strategy.evaluate(tupleExpr, bindings);
      return new LockingIteration<BindingSet, QueryEvaluationException>(readLock, iter);
    }
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    QueryOptimizerList optimizerList = new QueryOptimizerList();
    addCoreOptimizations(strategy, optimizerList);
    addRdbmsOptimizations(optimizerList);
    optimizerList.add(new SqlConstantOptimizer());

    optimizerList.optimize(tupleExpr, dataset, bindings);
    return tupleExpr;
  }

  protected void addCoreOptimizations(EvaluationStrategy strategy, QueryOptimizerList optimizerList) {
    optimizerList.add(new BindingAssigner());
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