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IgniteMapSortAggregate.java
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IgniteMapSortAggregate.java
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/*
* 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.sql.engine.rel.agg;
import java.util.List;
import java.util.Objects;
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.RelCollation;
import org.apache.calcite.rel.RelInput;
import org.apache.calcite.rel.RelNode;
import org.apache.calcite.rel.RelWriter;
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.rel.type.RelDataTypeFactory;
import org.apache.calcite.rel.type.RelDataTypeField;
import org.apache.calcite.util.ImmutableBitSet;
import org.apache.ignite.internal.sql.engine.rel.IgniteConvention;
import org.apache.ignite.internal.sql.engine.rel.IgniteRel;
import org.apache.ignite.internal.sql.engine.rel.IgniteRelVisitor;
import org.apache.ignite.internal.sql.engine.trait.TraitUtils;
import org.apache.ignite.internal.sql.engine.util.Commons;
/**
* IgniteMapSortAggregate.
* TODO Documentation https://issues.apache.org/jira/browse/IGNITE-15859
*/
public class IgniteMapSortAggregate extends IgniteMapAggregateBase implements IgniteSortAggregateBase {
/** Collation. */
private final RelCollation collation;
/**
* Constructor.
* TODO Documentation https://issues.apache.org/jira/browse/IGNITE-15859
*/
public IgniteMapSortAggregate(
RelOptCluster cluster,
RelTraitSet traitSet,
RelNode input,
ImmutableBitSet groupSet,
List<ImmutableBitSet> groupSets,
List<AggregateCall> aggCalls,
RelCollation collation
) {
super(cluster, traitSet, input, groupSet, groupSets, aggCalls);
assert Objects.nonNull(collation);
this.collation = collation;
}
/**
* Constructor used for deserialization.
*
* @param input Serialized representation.
*/
public IgniteMapSortAggregate(RelInput input) {
super(TraitUtils.changeTraits(input, IgniteConvention.INSTANCE));
collation = input.getCollation();
assert Objects.nonNull(collation);
}
/** {@inheritDoc} */
@Override
public Aggregate copy(
RelTraitSet traitSet,
RelNode input,
ImmutableBitSet groupSet,
List<ImmutableBitSet> groupSets,
List<AggregateCall> aggCalls) {
return new IgniteMapSortAggregate(
getCluster(), traitSet, input, groupSet, groupSets, aggCalls, TraitUtils.collation(traitSet));
}
/** {@inheritDoc} */
@Override
public IgniteRel clone(RelOptCluster cluster, List<IgniteRel> inputs) {
return new IgniteMapSortAggregate(
cluster,
getTraitSet().replace(collation),
sole(inputs),
getGroupSet(),
getGroupSets(),
getAggCallList(),
collation
);
}
/** {@inheritDoc} */
@Override
public <T> T accept(IgniteRelVisitor<T> visitor) {
return visitor.visit(this);
}
/** {@inheritDoc} */
@Override
public RelWriter explainTerms(RelWriter pw) {
return super.explainTerms(pw).item("collation", collation);
}
/** {@inheritDoc} */
@Override
protected RelDataType deriveRowType() {
RelDataTypeFactory typeFactory = Commons.typeFactory(getCluster());
RelDataTypeFactory.Builder builder = new RelDataTypeFactory.Builder(typeFactory);
groupSet.forEach(fieldIdx -> {
RelDataTypeField fld = input.getRowType().getFieldList().get(fieldIdx);
builder.add(fld);
});
if (!aggCalls.isEmpty()) {
builder.add("AGG_DATA", typeFactory.createArrayType(typeFactory.createJavaType(Object.class/*Accumulator.class*/), -1));
}
return builder.build();
}
/** {@inheritDoc} */
@Override
public RelOptCost computeSelfCost(RelOptPlanner planner, RelMetadataQuery mq) {
return computeSelfCostSort(planner, mq);
}
/** {@inheritDoc} */
@Override
public RelCollation collation() {
return collation;
}
}