PhysicalSink.java

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// to you under the Apache License, Version 2.0 (the
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//   http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.doris.nereids.trees.plans.physical;

import org.apache.doris.nereids.memo.GroupExpression;
import org.apache.doris.nereids.properties.DataTrait;
import org.apache.doris.nereids.properties.LogicalProperties;
import org.apache.doris.nereids.properties.PhysicalProperties;
import org.apache.doris.nereids.trees.expressions.NamedExpression;
import org.apache.doris.nereids.trees.expressions.Slot;
import org.apache.doris.nereids.trees.plans.Plan;
import org.apache.doris.nereids.trees.plans.PlanType;
import org.apache.doris.statistics.Statistics;

import com.google.common.collect.ImmutableList;
import org.jetbrains.annotations.Nullable;

import java.util.List;
import java.util.Objects;
import java.util.Optional;

/** abstract physical sink */
public abstract class PhysicalSink<CHILD_TYPE extends Plan> extends PhysicalUnary<CHILD_TYPE> {

    protected final List<NamedExpression> outputExprs;

    public PhysicalSink(PlanType type,
                        List<NamedExpression> outputExprs,
                        Optional<GroupExpression> groupExpression,
                        LogicalProperties logicalProperties,
                        @Nullable PhysicalProperties physicalProperties,
                        Statistics statistics, CHILD_TYPE child) {
        super(type, groupExpression, logicalProperties, physicalProperties, statistics, child);
        this.outputExprs = ImmutableList.copyOf(Objects.requireNonNull(outputExprs, "outputExprs should not null"));
    }

    @Override
    public List<Slot> computeOutput() {
        return outputExprs.stream()
                .map(NamedExpression::toSlot)
                .collect(ImmutableList.toImmutableList());
    }

    public List<NamedExpression> getOutputExprs() {
        return outputExprs;
    }

    @Override
    public void computeUnique(DataTrait.Builder builder) {
        // should not be invoked
    }

    @Override
    public void computeUniform(DataTrait.Builder builder) {
        // should not be invoked
    }

    @Override
    public void computeEqualSet(DataTrait.Builder builder) {
        // should not be invoked
    }

    @Override
    public void computeFd(DataTrait.Builder builder) {
        // should not be invoked
    }
}