AbstractNode.java

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package org.apache.doris.nereids.jobs.joinorder.hypergraphv2.node;

import org.apache.doris.nereids.jobs.joinorder.hypergraphv2.HyperElement;
import org.apache.doris.nereids.jobs.joinorder.hypergraphv2.bitmap.LongBitmap;
import org.apache.doris.nereids.trees.expressions.Slot;
import org.apache.doris.nereids.trees.plans.Plan;

import java.util.Set;

/**
 * HyperGraph Node.
 */
public class AbstractNode implements HyperElement {
    // The node is stored in HyperGraph's nodes member, use nodes.get(index) to get this node
    protected final int index;
    protected final Plan plan;

    protected AbstractNode(Plan plan, int index) {
        this.index = index;
        this.plan = plan;
    }

    @Override
    public long getReferenceNodes() {
        return getNodeMap();
    }

    public int getIndex() {
        return index;
    }

    public long getNodeMap() {
        return LongBitmap.newBitmap(index);
    }

    public Plan getPlan() {
        return plan;
    }

    public String getName() {
        return getPlan().getType().name() + index;
    }

    public Set<Slot> getOutput() {
        return plan.getOutputSet();
    }
}