Java Code Examples for org.apache.calcite.util.mapping.Mappings#apply()

The following examples show how to use org.apache.calcite.util.mapping.Mappings#apply() . 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: ExtendedAggregateExtractProjectRule.java    From flink with Apache License 2.0 5 votes vote down vote up 
private RelNode getNewAggregate(Aggregate oldAggregate, RelBuilder relBuilder, Mapping mapping) {

		final ImmutableBitSet newGroupSet =
			Mappings.apply(mapping, oldAggregate.getGroupSet());

		final Iterable<ImmutableBitSet> newGroupSets =
			oldAggregate.getGroupSets().stream()
				.map(bitSet -> Mappings.apply(mapping, bitSet))
				.collect(Collectors.toList());

		final List<RelBuilder.AggCall> newAggCallList =
			getNewAggCallList(oldAggregate, relBuilder, mapping);

		final RelBuilder.GroupKey groupKey =
			relBuilder.groupKey(newGroupSet, newGroupSets);

		if (oldAggregate instanceof LogicalWindowAggregate) {
			if (newGroupSet.size() == 0 && newAggCallList.size() == 0) {
				// Return the old LogicalWindowAggregate directly, as we can't get an empty Aggregate
				// from the relBuilder.
				return oldAggregate;
			} else {
				relBuilder.aggregate(groupKey, newAggCallList);
				Aggregate newAggregate = (Aggregate) relBuilder.build();
				LogicalWindowAggregate oldLogicalWindowAggregate = (LogicalWindowAggregate) oldAggregate;

				return LogicalWindowAggregate.create(
					oldLogicalWindowAggregate.getWindow(),
					oldLogicalWindowAggregate.getNamedProperties(),
					newAggregate);
			}
		} else {
			relBuilder.aggregate(groupKey, newAggCallList);
			return relBuilder.build();
		}
	}
Example 2
Source File: ExtendedAggregateExtractProjectRule.java    From flink with Apache License 2.0 5 votes vote down vote up 
private RelNode getNewAggregate(Aggregate oldAggregate, RelBuilder relBuilder, Mapping mapping) {

		final ImmutableBitSet newGroupSet =
			Mappings.apply(mapping, oldAggregate.getGroupSet());

		final Iterable<ImmutableBitSet> newGroupSets =
			oldAggregate.getGroupSets().stream()
				.map(bitSet -> Mappings.apply(mapping, bitSet))
				.collect(Collectors.toList());

		final List<RelBuilder.AggCall> newAggCallList =
			getNewAggCallList(oldAggregate, relBuilder, mapping);

		final RelBuilder.GroupKey groupKey =
			relBuilder.groupKey(newGroupSet, newGroupSets);

		if (oldAggregate instanceof LogicalWindowAggregate) {
			if (newGroupSet.size() == 0 && newAggCallList.size() == 0) {
				// Return the old LogicalWindowAggregate directly, as we can't get an empty Aggregate
				// from the relBuilder.
				return oldAggregate;
			} else {
				relBuilder.aggregate(groupKey, newAggCallList);
				Aggregate newAggregate = (Aggregate) relBuilder.build();
				LogicalWindowAggregate oldLogicalWindowAggregate = (LogicalWindowAggregate) oldAggregate;

				return LogicalWindowAggregate.create(
					oldLogicalWindowAggregate.getWindow(),
					oldLogicalWindowAggregate.getNamedProperties(),
					newAggregate);
			}
		} else {
			relBuilder.aggregate(groupKey, newAggCallList);
			return relBuilder.build();
		}
	}
Example 3
Source File: SubstitutionVisitor.java    From calcite with Apache License 2.0 5 votes vote down vote up 
public static MutableAggregate permute(MutableAggregate aggregate,
    MutableRel input, Mapping mapping) {
  ImmutableBitSet groupSet = Mappings.apply(mapping, aggregate.groupSet);
  ImmutableList<ImmutableBitSet> groupSets =
      Mappings.apply2(mapping, aggregate.groupSets);
  List<AggregateCall> aggregateCalls =
      Util.transform(aggregate.aggCalls, call -> call.transform(mapping));
  return MutableAggregate.of(input, groupSet, groupSets, aggregateCalls);
}
Example 4
Source File: SubstitutionVisitor.java    From Bats with Apache License 2.0 4 votes vote down vote up 
public static MutableAggregate permute(MutableAggregate aggregate, MutableRel input, Mapping mapping) {
    ImmutableBitSet groupSet = Mappings.apply(mapping, aggregate.groupSet);
    ImmutableList<ImmutableBitSet> groupSets = Mappings.apply2(mapping, aggregate.groupSets);
    List<AggregateCall> aggregateCalls = Util.transform(aggregate.aggCalls, call -> call.transform(mapping));
    return MutableAggregate.of(input, groupSet, groupSets, aggregateCalls);
}