tledkov-gridgain commented on a change in pull request #8683: URL: https://github.com/apache/ignite/pull/8683#discussion_r578434366
########## File path: modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/rel/IgniteAggregateHash.java ########## @@ -0,0 +1,112 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.ignite.internal.processors.query.calcite.rel; + +import java.util.List; + +import com.google.common.collect.ImmutableList; +import org.apache.calcite.plan.RelOptCluster; +import org.apache.calcite.plan.RelOptCost; +import org.apache.calcite.plan.RelOptPlanner; +import org.apache.calcite.plan.RelTraitSet; +import org.apache.calcite.rel.RelCollations; +import org.apache.calcite.rel.RelInput; +import org.apache.calcite.rel.RelNode; +import org.apache.calcite.rel.core.Aggregate; +import org.apache.calcite.rel.core.AggregateCall; +import org.apache.calcite.rel.metadata.RelMetadataQuery; +import org.apache.calcite.rel.type.RelDataType; +import org.apache.calcite.util.ImmutableBitSet; +import org.apache.calcite.util.Pair; +import org.apache.ignite.internal.processors.query.calcite.metadata.cost.IgniteCost; +import org.apache.ignite.internal.processors.query.calcite.trait.TraitUtils; + +/** + * + */ +public class IgniteAggregateHash extends IgniteAggregateBase { + /** {@inheritDoc} */ + public IgniteAggregateHash(RelOptCluster cluster, RelTraitSet traitSet, RelNode input, ImmutableBitSet groupSet, List<ImmutableBitSet> groupSets, List<AggregateCall> aggCalls) { + super(cluster, traitSet, input, groupSet, groupSets, aggCalls); + } + + /** {@inheritDoc} */ + public IgniteAggregateHash(RelInput input) { + super(input); + } + + /** {@inheritDoc} */ + @Override public Aggregate copy(RelTraitSet traitSet, RelNode input, ImmutableBitSet groupSet, List<ImmutableBitSet> groupSets, List<AggregateCall> aggCalls) { + return new IgniteAggregateHash(getCluster(), traitSet, input, groupSet, groupSets, aggCalls); + } + + /** {@inheritDoc} */ + @Override public IgniteRel clone(RelOptCluster cluster, List<IgniteRel> inputs) { + return new IgniteAggregateHash(cluster, getTraitSet(), sole(inputs), + getGroupSet(), getGroupSets(), getAggCallList()); + } + + /** {@inheritDoc} */ + @Override public <T> T accept(IgniteRelVisitor<T> visitor) { + return visitor.visit(this); + } + + /** {@inheritDoc} */ + @Override public Pair<RelTraitSet, List<RelTraitSet>> passThroughCollation(RelTraitSet nodeTraits, List<RelTraitSet> inputTraits) { + // Since it's a hash aggregate it erases collation. + return Pair.of(nodeTraits.replace(RelCollations.EMPTY), + ImmutableList.of(inputTraits.get(0).replace(RelCollations.EMPTY))); + } + + /** {@inheritDoc} */ + @Override public List<Pair<RelTraitSet, List<RelTraitSet>>> deriveCollation(RelTraitSet nodeTraits, List<RelTraitSet> inputTraits) { + // Since it's a hash aggregate it erases collation. + + return ImmutableList.of(Pair.of(nodeTraits.replace(RelCollations.EMPTY), + ImmutableList.of(inputTraits.get(0).replace(RelCollations.EMPTY)))); + } + + /** {@inheritDoc} */ + @Override public List<Pair<RelTraitSet, List<RelTraitSet>>> deriveCorrelation(RelTraitSet nodeTraits, + List<RelTraitSet> inTraits) { + return ImmutableList.of(Pair.of(nodeTraits.replace(TraitUtils.correlation(inTraits.get(0))), + inTraits)); + } + + /** {@inheritDoc} */ + @Override protected RelNode createMapAggregate(RelOptCluster cluster, RelTraitSet traits, RelNode input, + ImmutableBitSet groupSet, ImmutableList<ImmutableBitSet> groupSets, List<AggregateCall> aggCalls) { + return new IgniteMapAggregateHash(getCluster(), traits, input, groupSet, groupSets, aggCalls); + } + + /** {@inheritDoc} */ + @Override protected RelNode createReduceAggregate(RelOptCluster cluster, RelTraitSet traits, RelNode input, + ImmutableBitSet groupSet, ImmutableList<ImmutableBitSet> groupSets, List<AggregateCall> aggCalls, + RelDataType rowType) { + return new IgniteReduceAggregateHash(getCluster(), traits, input, groupSet, groupSets, aggCalls, getRowType()); + } + + /** {@inheritDoc} */ + @Override public RelOptCost computeSelfCost(RelOptPlanner planner, RelMetadataQuery mq) { + double rows = mq.getRowCount(getInput()); + + // TODO: fix it when https://issues.apache.org/jira/browse/IGNITE-13543 will be resolved + // currently it's OK to have such a dummy cost because there is no other options + return planner.getCostFactory().makeCost(rows, rows * IgniteCost.ROW_PASS_THROUGH_COST, 0); Review comment: Fixed ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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