Examples of org.eigenbase.rel.RelCollation

org.eigenbase.rel.RelCollation
Description of the physical ordering of a relational expression.
An ordering consists of a list of one or more column ordinals and the direction of the ordering.

    }


    @Override
    public RelNode convertChild(DrillWriterRelBase writer, RelNode rel) throws RuntimeException {
      DrillDistributionTrait childDist = rel.getTraitSet().getTrait(DrillDistributionTraitDef.INSTANCE);
      RelCollation childCollation = rel.getTraitSet().getTrait(RelCollationTraitDef.INSTANCE);


      return new WriterPrel(writer.getCluster(),
          writer.getTraitSet().plus(childDist).plus(childCollation).plus(Prel.DRILL_PHYSICAL),
          rel, writer.getCreateTableEntry());
    }

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    }
    
    boolean hashSingleKey = PrelUtil.getPlannerSettings(call.getPlanner()).isHashSingleKey();
    
    try {            
      RelCollation collationLeft = getCollation(join.getLeftKeys());
      RelCollation collationRight = getCollation(join.getRightKeys());


      createDistBothPlan(call, join, PhysicalJoinType.MERGE_JOIN, left, right, collationLeft, collationRight, hashSingleKey);


      if (checkBroadcastConditions(call.getPlanner(), join, left, right)) {
        createBroadcastPlan(call, join, PhysicalJoinType.MERGE_JOIN, left, right, collationLeft, collationRight);

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    }


    @Override
    public RelNode convertChild(DrillProjectRel project, RelNode rel) throws RuntimeException {
      DrillDistributionTrait childDist = rel.getTraitSet().getTrait(DrillDistributionTraitDef.INSTANCE);
      RelCollation childCollation = rel.getTraitSet().getTrait(RelCollationTraitDef.INSTANCE);




      DrillDistributionTrait newDist = convertDist(childDist, inToOut);
      RelCollation newCollation = convertRelCollation(childCollation, inToOut);
      RelTraitSet newProjectTraits = rel.getTraitSet().plus(newDist).plus(newCollation);
      return new ProjectPrel(project.getCluster(), newProjectTraits, rel, project.getProjects(), project.getRowType());
    }

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  @Override
  public void onMatch(RelOptRuleCall call) {
    final DrillAggregateRel aggregate = (DrillAggregateRel) call.rel(0);
    final RelNode input = aggregate.getChild();
    final RelCollation collation = getCollation(aggregate);
    RelTraitSet traits = null;


    if (aggregate.containsDistinctCall()) {
      // currently, don't use StreamingAggregate if any of the logical aggrs contains DISTINCT
      return;

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  @Override
  public HiveSortRel copy(RelTraitSet traitSet, RelNode newInput, RelCollation newCollation,
      RexNode offset, RexNode fetch) {
    // TODO: can we blindly copy sort trait? What if inputs changed and we
    // are now sorting by different cols
    RelCollation canonizedCollation = traitSet.canonize(newCollation);
    return new HiveSortRel(getCluster(), traitSet, newInput, canonizedCollation, offset, fetch);
  }

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          }
        }


        // 4. Construct SortRel
        RelTraitSet traitSet = cluster.traitSetOf(HiveRel.CONVENTION);
        RelCollation canonizedCollation = traitSet.canonize(RelCollationImpl.of(fieldCollations));
        sortRel = new HiveSortRel(cluster, traitSet, obInputRel, canonizedCollation, null, null);


        // 5. Update the maps
        // NOTE: Output RR for SortRel is considered same as its input; we may
        // end up not using VC that is present in sort rel. Also note that

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      Integer limit = qbp.getDestToLimit().get(qbp.getClauseNames().iterator().next());


      if (limit != null) {
        RexNode fetch = cluster.getRexBuilder().makeExactLiteral(BigDecimal.valueOf(limit));
        RelTraitSet traitSet = cluster.traitSetOf(HiveRel.CONVENTION);
        RelCollation canonizedCollation = traitSet.canonize(RelCollationImpl.EMPTY);
        sortRel = new HiveSortRel(cluster, traitSet, srcRel, canonizedCollation, null, fetch);


        RowResolver outputRR = new RowResolver();
        if (!RowResolver.add(outputRR, relToHiveRR.get(srcRel))) {
          throw new OptiqSemanticException(

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    }


    @Override
    public RelNode convertChild(DrillProjectRel project, RelNode rel) throws RuntimeException {
      DrillDistributionTrait childDist = rel.getTraitSet().getTrait(DrillDistributionTraitDef.INSTANCE);
      RelCollation childCollation = rel.getTraitSet().getTrait(RelCollationTraitDef.INSTANCE);




      DrillDistributionTrait newDist = convertDist(childDist, inToOut);
      RelCollation newCollation = convertRelCollation(childCollation, inToOut);
      RelTraitSet newProjectTraits = rel.getTraitSet().plus(newDist).plus(newCollation);
      return new ProjectPrel(project.getCluster(), newProjectTraits, rel, project.getProjects(), project.getRowType());
    }

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      WindowRelBase.Window windowBase = w.getValue();
      DrillDistributionTrait distOnAllKeys =
          new DrillDistributionTrait(DrillDistributionTrait.DistributionType.HASH_DISTRIBUTED,
              ImmutableList.copyOf(getDistributionFields(windowBase)));


      RelCollation collation = getCollation(windowBase);
      RelTraitSet traits = call.getPlanner().emptyTraitSet().plus(Prel.DRILL_PHYSICAL).plus(collation).plus(distOnAllKeys);
      final RelNode convertedInput = convert(input, traits);


      List<RelDataTypeField> newRowFields = Lists.newArrayList();
      for(RelDataTypeField field : convertedInput.getRowType().getFieldList()) {

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  @Override
  public void onMatch(RelOptRuleCall call) {
    final DrillAggregateRel aggregate = (DrillAggregateRel) call.rel(0);
    final RelNode input = aggregate.getChild();
    final RelCollation collation = getCollation(aggregate);
    RelTraitSet traits = null;


    if (aggregate.containsDistinctCall()) {
      // currently, don't use StreamingAggregate if any of the logical aggrs contains DISTINCT
      return;

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Related Classes of org.eigenbase.rel.RelCollation

org.apache.drill.exec.planner.physical.MergeJoinPrule

org.apache.drill.exec.planner.physical.ProjectPrule$ProjectTraitPull

org.apache.drill.exec.planner.physical.StreamAggPrule

org.apache.drill.exec.planner.physical.StreamingWindowPrule

org.apache.drill.exec.planner.physical.WriterPrule$WriteTraitPull

org.apache.hadoop.hive.ql.optimizer.optiq.reloperators.HiveSortRel

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

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