MaterializeSource.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.processor.post.materialize;

import org.apache.doris.nereids.trees.expressions.SlotReference;
import org.apache.doris.nereids.trees.plans.algebra.Relation;

import java.util.Objects;

/** Resolved physical source for one lazy output. */
public final class MaterializeSource {
    private final Relation relation;
    private final SlotReference baseSlot;
    private final SourceColumnKey sourceColumnKey;

    public MaterializeSource(Relation relation, SlotReference baseSlot) {
        this.relation = Objects.requireNonNull(relation, "relation must not be null");
        this.baseSlot = Objects.requireNonNull(baseSlot, "baseSlot must not be null");
        this.sourceColumnKey = SourceColumnKey.from(relation, baseSlot);
    }

    public Relation getRelation() {
        return relation;
    }

    public SlotReference getBaseSlot() {
        return baseSlot;
    }

    public SourceColumnKey getSourceColumnKey() {
        return sourceColumnKey;
    }

    @Override
    public boolean equals(Object object) {
        if (this == object) {
            return true;
        }
        if (!(object instanceof MaterializeSource)) {
            return false;
        }
        MaterializeSource other = (MaterializeSource) object;
        return sourceColumnKey.equals(other.sourceColumnKey) && baseSlot.equals(other.baseSlot);
    }

    @Override
    public int hashCode() {
        return Objects.hash(sourceColumnKey, baseSlot);
    }
}