Examples of FoundJoinOrder

Examples of org.apache.tajo.engine.planner.logical.join.FoundJoinOrder

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      // finding relations and filter expressions
      JoinGraphContext joinGraphContext = JoinGraphBuilder.buildJoinGraph(plan, block);

      // finding join order and restore remain filter order
      FoundJoinOrder order = joinOrderAlgorithm.findBestOrder(plan, block,
          joinGraphContext.joinGraph, joinGraphContext.quals, joinGraphContext.relationsWithoutQual);
      block.setJoinNode(order.getOrderedJoin());

      String optimizedOrder = JoinOrderStringBuilder.buildJoinOrderString(plan, block);

      block.addHistory("Non-optimized join order: " + originalOrder + " (cost: " + nonOptimizedJoinCost + ")");
      block.addHistory("Optimized join order    : " + optimizedOrder + " (cost: " + order.getCost() + ")");
    }
  }
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Examples of org.apache.tajo.engine.planner.logical.join.FoundJoinOrder

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      // finding relations and filter expressions
      JoinGraphContext joinGraphContext = JoinGraphBuilder.buildJoinGraph(plan, block);

      // finding join order and restore remain filter order
      FoundJoinOrder order = joinOrderAlgorithm.findBestOrder(plan, block,
          joinGraphContext.joinGraph, joinGraphContext.relationsForProduct);
      JoinNode newJoinNode = order.getOrderedJoin();
      JoinNode old = PlannerUtil.findTopNode(block.getRoot(), NodeType.JOIN);

      JoinTargetCollector collector = new JoinTargetCollector();
      Set<Target> targets = new LinkedHashSet<Target>();
      collector.visitJoin(targets, plan, block, old, new Stack<LogicalNode>());

      if (targets.size() == 0) {
        newJoinNode.setTargets(PlannerUtil.schemaToTargets(old.getOutSchema()));
      } else {
        newJoinNode.setTargets(targets.toArray(new Target[targets.size()]));
      }

      PlannerUtil.replaceNode(plan, block.getRoot(), old, newJoinNode);
      String optimizedOrder = JoinOrderStringBuilder.buildJoinOrderString(plan, block);
      block.addPlanHistory("Non-optimized join order: " + originalOrder + " (cost: " + nonOptimizedJoinCost + ")");
      block.addPlanHistory("Optimized join order    : " + optimizedOrder + " (cost: " + order.getCost() + ")");
    }
  }
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