PhysicalRelation.java

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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.LogicalProperties;
import org.apache.doris.nereids.properties.PhysicalProperties;
import org.apache.doris.nereids.trees.expressions.Expression;
import org.apache.doris.nereids.trees.plans.PlanType;
import org.apache.doris.nereids.trees.plans.RelationId;
import org.apache.doris.nereids.trees.plans.algebra.Relation;
import org.apache.doris.statistics.Statistics;

import com.google.common.collect.ImmutableList;

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

/**
 * Abstract class for all physical scan plan.
 */
public abstract class PhysicalRelation extends PhysicalLeaf implements Relation {

    protected final RelationId relationId;

    /**
     * Constructor for PhysicalRelation.
     */
    public PhysicalRelation(RelationId relationId, PlanType type,
            Optional<GroupExpression> groupExpression, LogicalProperties logicalProperties) {
        super(type, groupExpression, logicalProperties);
        this.relationId = relationId;
    }

    /**
     * Constructor for PhysicalRelation.
     */
    public PhysicalRelation(RelationId relationId, PlanType type,
            Optional<GroupExpression> groupExpression, LogicalProperties logicalProperties,
            PhysicalProperties physicalProperties, Statistics statistics) {
        super(type, groupExpression, logicalProperties, physicalProperties, statistics);
        this.relationId = relationId;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        PhysicalRelation that = (PhysicalRelation) o;
        return Objects.equals(relationId, that.relationId);
    }

    @Override
    public int hashCode() {
        return Objects.hash(relationId);
    }

    @Override
    public List<? extends Expression> getExpressions() {
        return ImmutableList.of();
    }

    public RelationId getRelationId() {
        return relationId;
    }

    public boolean canPushDownRuntimeFilter() {
        return false;
    }
}