Java Code Examples for org.apache.calcite.plan.RelOptPlanner#getContext()

The following examples show how to use org.apache.calcite.plan.RelOptPlanner#getContext() . 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: MaterializedViewFilterScanRule.java    From Bats with Apache License 2.0 6 votes vote down vote up 
protected void apply(RelOptRuleCall call, Filter filter, TableScan scan) {
  final RelOptPlanner planner = call.getPlanner();
  final List<RelOptMaterialization> materializations =
      planner.getMaterializations();
  if (!materializations.isEmpty()) {
    RelNode root = filter.copy(filter.getTraitSet(),
        Collections.singletonList((RelNode) scan));
    List<RelOptMaterialization> applicableMaterializations =
        RelOptMaterializations.getApplicableMaterializations(root, materializations);
    for (RelOptMaterialization materialization : applicableMaterializations) {
      if (RelOptUtil.areRowTypesEqual(scan.getRowType(),
          materialization.queryRel.getRowType(), false)) {
        RelNode target = materialization.queryRel;
        final HepPlanner hepPlanner =
            new HepPlanner(program, planner.getContext());
        hepPlanner.setRoot(target);
        target = hepPlanner.findBestExp();
        List<RelNode> subs = new MaterializedViewSubstitutionVisitor(target, root)
            .go(materialization.tableRel);
        for (RelNode s : subs) {
          call.transformTo(s);
        }
      }
    }
  }
}
Example 2
Source File: ResultProcessor.java    From quark with Apache License 2.0 6 votes vote down vote up 
public static String getParsedSql(RelNode relNode, SqlDialect dialect) throws SQLException {
  if (dialect.getDatabaseProduct() == SqlDialect.DatabaseProduct.HIVE) {
    final HepProgram program = new HepProgramBuilder()
        .addRuleInstance(JoinCalcTransposeRule.LEFT_CALC)
        .addRuleInstance(JoinCalcTransposeRule.RIGHT_CALC)
        .addRuleInstance(CalcMergeRule.INSTANCE)
        .build();
    final RelOptPlanner planner = relNode.getCluster().getPlanner();
    final HepPlanner hepPlanner =
        new HepPlanner(program, planner.getContext());
    hepPlanner.setRoot(relNode);
    relNode = hepPlanner.findBestExp();
  }
  RelToSqlConverter relToSqlConverter = new RelToSqlConverter(dialect);
  RelToSqlConverter.Result res = relToSqlConverter.visitChild(0, relNode);
  SqlNode sqlNode = res.asQuery();
  String result = sqlNode.toSqlString(dialect, false).getSql();
  return result.replace("\n", " ");
}
Example 3
Source File: MaterializedViewFilterScanRule.java    From calcite with Apache License 2.0 6 votes vote down vote up 
protected void apply(RelOptRuleCall call, Filter filter, TableScan scan) {
  final RelOptPlanner planner = call.getPlanner();
  final List<RelOptMaterialization> materializations =
      planner.getMaterializations();
  if (!materializations.isEmpty()) {
    RelNode root = filter.copy(filter.getTraitSet(),
        Collections.singletonList((RelNode) scan));
    List<RelOptMaterialization> applicableMaterializations =
        RelOptMaterializations.getApplicableMaterializations(root, materializations);
    for (RelOptMaterialization materialization : applicableMaterializations) {
      if (RelOptUtil.areRowTypesEqual(scan.getRowType(),
          materialization.queryRel.getRowType(), false)) {
        RelNode target = materialization.queryRel;
        final HepPlanner hepPlanner =
            new HepPlanner(program, planner.getContext());
        hepPlanner.setRoot(target);
        target = hepPlanner.findBestExp();
        List<RelNode> subs = new SubstitutionVisitor(target, root)
            .go(materialization.tableRel);
        for (RelNode s : subs) {
          call.transformTo(s);
        }
      }
    }
  }
}
Example 4
Source File: MaterializedViewFilterScanRule.java    From quark with Apache License 2.0 5 votes vote down vote up 
protected void apply(RelOptRuleCall call, Filter filter, TableScan scan) {
  //Avoid optimizing already optimized scan
  if (scan instanceof QuarkViewScan || scan instanceof QuarkTileScan) {
    return;
  }
  RelNode root = filter.copy(filter.getTraitSet(),
      Collections.singletonList((RelNode) scan));
  RelOptPlanner planner = call.getPlanner();
  if (planner instanceof VolcanoPlanner) {
    List<RelOptMaterialization> materializations
        = ((VolcanoPlanner) planner).getMaterializations();
    for (RelOptMaterialization materialization : materializations) {
      if (scan.getRowType().equals(materialization.queryRel.getRowType())) {
        RelNode target = materialization.queryRel;
        final HepPlanner hepPlanner =
            new HepPlanner(program, planner.getContext());
        hepPlanner.setRoot(target);
        target = hepPlanner.findBestExp();
        List<RelNode> subs = new MaterializedViewSubstitutionVisitor(target, root)
            .go(materialization.tableRel);
        for (RelNode s : subs) {
          call.transformTo(s);
        }
      }
    }
  }
}