Package org.apache.tajo.engine.planner.rewrite

Examples of org.apache.tajo.engine.planner.rewrite.BasicQueryRewriteEngine

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  private BasicQueryRewriteEngine rulesBeforeJoinOpt;
  private BasicQueryRewriteEngine rulesAfterToJoinOpt;
  private JoinOrderAlgorithm joinOrderAlgorithm = new GreedyHeuristicJoinOrderAlgorithm();

  public LogicalOptimizer() {
    rulesBeforeJoinOpt = new BasicQueryRewriteEngine();
    rulesBeforeJoinOpt.addRewriteRule(new FilterPushDownRule());

    rulesAfterToJoinOpt = new BasicQueryRewriteEngine();
    rulesAfterToJoinOpt.addRewriteRule(new ProjectionPushDownRule());
  }
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  private BasicQueryRewriteEngine rulesBeforeJoinOpt;
  private BasicQueryRewriteEngine rulesAfterToJoinOpt;
  private JoinOrderAlgorithm joinOrderAlgorithm = new GreedyHeuristicJoinOrderAlgorithm();

  public LogicalOptimizer(TajoConf systemConf) {
    rulesBeforeJoinOpt = new BasicQueryRewriteEngine();
    rulesBeforeJoinOpt.addRewriteRule(new FilterPushDownRule());

    rulesAfterToJoinOpt = new BasicQueryRewriteEngine();
    rulesAfterToJoinOpt.addRewriteRule(new ProjectionPushDownRule());
    rulesAfterToJoinOpt.addRewriteRule(new PartitionedTableRewriter(systemConf));
  }
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Related Classes of org.apache.tajo.engine.planner.rewrite.BasicQueryRewriteEngine

  • org.apache.tajo.engine.planner.LogicalOptimizer
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