Examples of org.eigenbase.rel.rules.SemiJoinRel

org.eigenbase.rel.rules.SemiJoinRel
A SemiJoinRel represents two relational expressions joined according to some condition, where the output only contains the columns from the left join input.

          "EnumerableSemiJoinRule");
    }


    @Override
    public RelNode convert(RelNode rel) {
      final SemiJoinRel semiJoin = (SemiJoinRel) rel;
      List<RelNode> newInputs = new ArrayList<RelNode>();
      for (RelNode input : semiJoin.getInputs()) {
        if (!(input.getConvention() instanceof EnumerableConvention)) {
          input =
              convert(input,
                  input.getTraitSet().replace(EnumerableConvention.INSTANCE));
        }
        newInputs.add(input);
      }
      try {
        return new EnumerableSemiJoinRel(
            semiJoin.getCluster(),
            semiJoin.getTraitSet().replace(EnumerableConvention.INSTANCE),
            newInputs.get(0),
            newInputs.get(1),
            semiJoin.getCondition(),
            semiJoin.leftKeys,
            semiJoin.rightKeys);
      } catch (InvalidRelException e) {
        LOGGER.fine(e.toString());
        return null;

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        final List<Integer> rightKeys = new ArrayList<Integer>();
        optiqJoinCond = HiveOptiqUtil.projectNonColumnEquiConditions(
            HiveProjectRel.DEFAULT_PROJECT_FACTORY, inputRels, leftJoinKeys, rightJoinKeys, 0,
            leftKeys, rightKeys);


        joinRel = new SemiJoinRel(cluster, cluster.traitSetOf(HiveRel.CONVENTION),
            inputRels[0], inputRels[1], optiqJoinCond, ImmutableIntList.copyOf(leftKeys),
            ImmutableIntList.copyOf(rightKeys));
      } else {
        joinRel = HiveJoinRel.getJoin(cluster, leftRel, rightRel, optiqJoinCond, optiqJoinType,
            leftSemiJoin);

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   */
  private static class SemiJoinFactoryImpl implements SemiJoinFactory {
    public RelNode createSemiJoin(RelNode left, RelNode right,
        RexNode condition) {
      final JoinInfo joinInfo = JoinInfo.of(left, right, condition);
      return new SemiJoinRel(left.getCluster(), left.getTraitSet(), left, right,
        condition, joinInfo.leftKeys, joinInfo.rightKeys);
    }

View Full Code Here

          "EnumerableSemiJoinRule");
    }


    @Override
    public RelNode convert(RelNode rel) {
      final SemiJoinRel semiJoin = (SemiJoinRel) rel;
      List<RelNode> newInputs = new ArrayList<RelNode>();
      for (RelNode input : semiJoin.getInputs()) {
        if (!(input.getConvention() instanceof EnumerableConvention)) {
          input =
              convert(input,
                  input.getTraitSet().replace(EnumerableConvention.INSTANCE));
        }
        newInputs.add(input);
      }
      try {
        return new EnumerableSemiJoinRel(
            semiJoin.getCluster(),
            semiJoin.getTraitSet().replace(EnumerableConvention.INSTANCE),
            newInputs.get(0),
            newInputs.get(1),
            semiJoin.getCondition(),
            semiJoin.leftKeys,
            semiJoin.rightKeys);
      } catch (InvalidRelException e) {
        LOGGER.fine(e.toString());
        return null;

View Full Code Here

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Related Classes of org.eigenbase.rel.rules.SemiJoinRel

net.hydromatic.optiq.rules.java.JavaRules$EnumerableSemiJoinRule

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

org.eigenbase.rel.RelFactories$SemiJoinFactoryImpl

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