DefaultPlanVisitor.java

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package org.apache.doris.nereids.trees.plans.visitor;

import org.apache.doris.nereids.trees.plans.Plan;

/**
 * Use the visitor to iterate over all plans for plan.
 */
public class DefaultPlanVisitor<R, C> extends PlanVisitor<R, C> {
    @Override
    public R visit(Plan plan, C context) {
        for (Plan child : plan.children()) {
            child.accept(this, context);
        }
        return null;
    }
}