RelationId.java

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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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package org.apache.doris.nereids.trees.plans;

import org.apache.doris.common.Id;
import org.apache.doris.common.IdGenerator;
import org.apache.doris.nereids.trees.expressions.StatementScopeIdGenerator;

/**
 * relation id
 */
public class RelationId extends Id<RelationId> {

    public RelationId(int id) {
        super(id);
    }

    /**
     * Should be only called by {@link StatementScopeIdGenerator}.
     */
    public static IdGenerator<RelationId> createGenerator() {
        return new IdGenerator<RelationId>() {
            @Override
            public RelationId getNextId() {
                return new RelationId(nextId++);
            }
        };
    }

    @Override
    public String toString() {
        return "RelationId#" + id;
    }

    @Override
    public boolean equals(Object obj) {
        return super.equals(obj);
    }

    @Override
    public int hashCode() {
        return super.hashCode();
    }
}