org.apache.calcite.rel.rules.ProjectJoinTransposeRule Java Examples

The following examples show how to use org.apache.calcite.rel.rules.ProjectJoinTransposeRule. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: MaterializedViewSubstitutionVisitorTest.java    From calcite with Apache License 2.0 6 votes vote down vote up 
private RelNode canonicalize(RelNode rel) {
  HepProgram program =
      new HepProgramBuilder()
          .addRuleInstance(FilterProjectTransposeRule.INSTANCE)
          .addRuleInstance(FilterMergeRule.INSTANCE)
          .addRuleInstance(FilterJoinRule.FILTER_ON_JOIN)
          .addRuleInstance(FilterJoinRule.JOIN)
          .addRuleInstance(FilterAggregateTransposeRule.INSTANCE)
          .addRuleInstance(ProjectMergeRule.INSTANCE)
          .addRuleInstance(ProjectRemoveRule.INSTANCE)
          .addRuleInstance(ProjectJoinTransposeRule.INSTANCE)
          .addRuleInstance(ProjectSetOpTransposeRule.INSTANCE)
          .addRuleInstance(FilterToCalcRule.INSTANCE)
          .addRuleInstance(ProjectToCalcRule.INSTANCE)
          .addRuleInstance(FilterCalcMergeRule.INSTANCE)
          .addRuleInstance(ProjectCalcMergeRule.INSTANCE)
          .addRuleInstance(CalcMergeRule.INSTANCE)
          .build();
  final HepPlanner hepPlanner = new HepPlanner(program);
  hepPlanner.setRoot(rel);
  return hepPlanner.findBestExp();
}
Example #2
Source File: InstanceByClassTableScan.java    From mat-calcite-plugin with Apache License 2.0 5 votes vote down vote up 
@Override
    public void register(RelOptPlanner planner) {
        planner.addRule(InstanceAccessByClassIdRule.INSTANCE);
        planner.addRule(ProjectJoinTransposeRule.INSTANCE);
        // Does not yet work.
        // These rules should convert join (a."@ID" = :var) to "snapshot.getObject(:var)"
//        planner.addRule(NestedLoopsJoinRule.INSTANCE);
//        planner.addRule(InstanceAccessByIdRule.INSTANCE);
    }
Example #3
Source File: RelOptMaterializations.java    From calcite with Apache License 2.0 4 votes vote down vote up 
private static List<RelNode> substitute(
    RelNode root, RelOptMaterialization materialization) {
  // First, if the materialization is in terms of a star table, rewrite
  // the query in terms of the star table.
  if (materialization.starTable != null) {
    RelNode newRoot = RelOptMaterialization.tryUseStar(root,
        materialization.starRelOptTable);
    if (newRoot != null) {
      root = newRoot;
    }
  }

  // Push filters to the bottom, and combine projects on top.
  RelNode target = materialization.queryRel;
  // try to trim unused field in relational expressions.
  root = trimUnusedfields(root);
  target = trimUnusedfields(target);
  HepProgram program =
      new HepProgramBuilder()
          .addRuleInstance(FilterProjectTransposeRule.INSTANCE)
          .addRuleInstance(FilterMergeRule.INSTANCE)
          .addRuleInstance(FilterJoinRule.FILTER_ON_JOIN)
          .addRuleInstance(FilterJoinRule.JOIN)
          .addRuleInstance(FilterAggregateTransposeRule.INSTANCE)
          .addRuleInstance(ProjectMergeRule.INSTANCE)
          .addRuleInstance(ProjectRemoveRule.INSTANCE)
          .addRuleInstance(ProjectJoinTransposeRule.INSTANCE)
          .addRuleInstance(ProjectSetOpTransposeRule.INSTANCE)
          .addRuleInstance(FilterToCalcRule.INSTANCE)
          .addRuleInstance(ProjectToCalcRule.INSTANCE)
          .addRuleInstance(FilterCalcMergeRule.INSTANCE)
          .addRuleInstance(ProjectCalcMergeRule.INSTANCE)
          .addRuleInstance(CalcMergeRule.INSTANCE)
          .build();

  // We must use the same HEP planner for the two optimizations below.
  // Thus different nodes with the same digest will share the same vertex in
  // the plan graph. This is important for the matching process.
  final HepPlanner hepPlanner = new HepPlanner(program);
  hepPlanner.setRoot(target);
  target = hepPlanner.findBestExp();

  hepPlanner.setRoot(root);
  root = hepPlanner.findBestExp();

  return new SubstitutionVisitor(target, root).go(materialization.tableRel);
}