Examples of org.eigenbase.relopt.hep.HepProgramBuilder

org.eigenbase.relopt.hep.HepProgramBuilder
HepProgramBuilder creates instances of {@link HepProgram}.

        + "where cast((empno + (10/2)) as int) = 13");
  }


  @Ignore // Optiq does not support INSERT yet
  @Test public void testReduceCastsNullable() throws Exception {
    HepProgram program = new HepProgramBuilder()


        // Simulate the way INSERT will insert casts to the target types
        .addRuleInstance(
            new CoerceInputsRule(TableModificationRel.class, false))

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        "insert into sales.depts(name) "
        + "select cast(gender as varchar(128)) from sales.emps");
  }


  private void basePushAggThroughUnion() throws Exception {
    HepProgram program = new HepProgramBuilder()
        .addRuleInstance(PushProjectPastSetOpRule.INSTANCE)
        .addRuleInstance(MergeProjectRule.INSTANCE)
        .addRuleInstance(PushAggregateThroughUnionRule.INSTANCE)
        .build();
    checkPlanning(program, "${sql}");

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  @Test public void testPushSumCountStarThroughUnion() throws Exception {
    basePushAggThroughUnion();
  }


  private void basePullConstantTroughAggregate() throws Exception {
    HepProgram program = new HepProgramBuilder()
        .addRuleInstance(MergeProjectRule.INSTANCE)
        .addRuleInstance(PullConstantsThroughAggregatesRule.INSTANCE)
        .addRuleInstance(MergeProjectRule.INSTANCE)
        .build();
    checkPlanning(program, "${sql}");

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  public void transitiveInference() throws Exception {
    final DiffRepository diffRepos = getDiffRepos();
    String sql = diffRepos.expand(null, "${sql}");


    HepProgram program = new HepProgramBuilder()
        .addRuleInstance(PushFilterPastJoinRule.DUMB_FILTER_ON_JOIN)
        .addRuleInstance(PushFilterPastJoinRule.JOIN)
        .addRuleInstance(PushFilterPastProjectRule.INSTANCE)
        .addRuleInstance(PushFilterPastSetOpRule.INSTANCE)
        .build();
    HepPlanner planner = new HepPlanner(program);


    RelNode relInitial = tester.convertSqlToRel(sql);


    assertTrue(relInitial != null);


    List<RelMetadataProvider> list = Lists.newArrayList();
    DefaultRelMetadataProvider defaultProvider =
        new DefaultRelMetadataProvider();
    list.add(defaultProvider);
    planner.registerMetadataProviders(list);
    RelMetadataProvider plannerChain = ChainedRelMetadataProvider.of(list);
    relInitial.getCluster().setMetadataProvider(
        new CachingRelMetadataProvider(plannerChain, planner));


    planner.setRoot(relInitial);
    RelNode relAfter = planner.findBestExp();


    String planBefore = NL + RelOptUtil.toString(relAfter);
    diffRepos.assertEquals("planBefore", "${planBefore}", planBefore);


    HepProgram program2 = new HepProgramBuilder()
        .addMatchOrder(HepMatchOrder.BOTTOM_UP)
        .addRuleInstance(PushFilterPastJoinRule.DUMB_FILTER_ON_JOIN)
        .addRuleInstance(PushFilterPastJoinRule.JOIN)
        .addRuleInstance(PushFilterPastProjectRule.INSTANCE)
        .addRuleInstance(PushFilterPastSetOpRule.INSTANCE)

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      List<RelMetadataProvider> list = Lists.newArrayList();
      list.add(HiveDefaultRelMetadataProvider.INSTANCE);
      RelTraitSet desiredTraits = cluster.traitSetOf(HiveRel.CONVENTION, RelCollationImpl.EMPTY);


      HepProgram hepPgm = null;
      HepProgramBuilder hepPgmBldr = new HepProgramBuilder().addMatchOrder(HepMatchOrder.BOTTOM_UP)
          .addRuleInstance(new ConvertMultiJoinRule(HiveJoinRel.class));
      hepPgmBldr.addRuleInstance(new LoptOptimizeJoinRule(HiveJoinRel.HIVE_JOIN_FACTORY,
          HiveProjectRel.DEFAULT_PROJECT_FACTORY, HiveFilterRel.DEFAULT_FILTER_FACTORY));


      hepPgm = hepPgmBldr.build();
      HepPlanner hepPlanner = new HepPlanner(hepPgm);


      hepPlanner.registerMetadataProviders(list);
      RelMetadataProvider chainedProvider = ChainedRelMetadataProvider.of(list);
      cluster.setMetadataProvider(new CachingRelMetadataProvider(chainedProvider, hepPlanner));

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    private RelNode hepPlan(RelNode basePlan, boolean followPlanChanges,
        RelMetadataProvider mdProvider, RelOptRule... rules) {


      RelNode optimizedRelNode = basePlan;
      HepProgramBuilder programBuilder = new HepProgramBuilder();
      if (followPlanChanges) {
        programBuilder.addMatchOrder(HepMatchOrder.TOP_DOWN);
        programBuilder = programBuilder.addRuleCollection(ImmutableList.copyOf(rules));
      } else {
        // TODO: Should this be also TOP_DOWN?
        for (RelOptRule r : rules)
          programBuilder.addRuleInstance(r);
      }


      HepPlanner planner = new HepPlanner(programBuilder.build());
      List<RelMetadataProvider> list = Lists.newArrayList();
      list.add(mdProvider);
      planner.registerMetadataProviders(list);
      RelMetadataProvider chainedProvider = ChainedRelMetadataProvider.of(list);
      basePlan.getCluster().setMetadataProvider(

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        .context(context.getPlannerSettings()) //
        .ruleSets(getRules(context)) //
        .costFactory(costFactory) //
        .build();
    this.planner = Frameworks.getPlanner(config);
    HepProgramBuilder builder = new HepProgramBuilder();
    builder.addRuleClass(ReduceExpressionsRule.class);
    builder.addRuleClass(WindowedAggSplitterRule.class);
    this.hepPlanner = new HepPlanner(builder.build());
    hepPlanner.addRule(ReduceExpressionsRule.CALC_INSTANCE);
    hepPlanner.addRule(WindowedAggSplitterRule.PROJECT);
  }

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org.apache.drill.exec.planner.sql.DrillSqlWorker

org.apache.hadoop.hive.ql.parse.SemanticAnalyzer$OptiqBasedPlanner

org.eigenbase.test.RelOptRulesTest

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