IdGenerator.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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// This file is copied from
// https://github.com/apache/impala/blob/branch-2.9.0/fe/src/main/java/org/apache/impala/IdGenerator.java
// and modified by Doris

package org.apache.doris.common;

/**
 * Generator of consecutively numbered integers to be used as ids by subclasses of Id.
 * Subclasses of Id should be able to create a generator for their Id type.
 */
public abstract class IdGenerator<IdType extends Id<IdType>> {
    protected int nextId = 0;

    // test only
    public IdGenerator<IdType> resetId(int initialId) {
        nextId = initialId;
        return this;
    }

    public abstract IdType getNextId();

}