ScanSource.java

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package org.apache.doris.nereids.trees.plans.distribute.worker.job;

import org.apache.doris.planner.ScanNode;

import java.util.List;

/** ScanSource */
public abstract class ScanSource {

    public abstract int maxParallel(List<ScanNode> scanNodes);

    public abstract List<ScanSource> parallelize(List<ScanNode> scanNodes, int instanceNum);

    public abstract boolean isEmpty();

    public abstract ScanSource newEmpty();

    public abstract void toString(StringBuilder str, String prefix);

    @Override
    public String toString() {
        StringBuilder str = new StringBuilder();
        toString(str, "");
        return str.toString();
    }
}