fe/src/main/java/org/apache/impala/analysis/EquivalenceClassId.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
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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package org.apache.impala.analysis;

import org.apache.impala.common.Id;
import org.apache.impala.common.IdGenerator;

public class EquivalenceClassId extends Id<EquivalenceClassId> {
  // Construction only allowed via an IdGenerator.
  protected EquivalenceClassId(int id) {
    super(id);
  }

  public static IdGenerator<EquivalenceClassId> createGenerator() {
    return new IdGenerator<EquivalenceClassId>() {
      @Override
      public EquivalenceClassId getNextId() { return new EquivalenceClassId(nextId_++); }
      @Override
      public EquivalenceClassId getMaxId() { return new EquivalenceClassId(nextId_ - 1); }
    };
  }
}