content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.master.backcompat;
  
  import com.google.common.base.Objects;
  
  /**
   * Class for representing a version.
   */
  public final class Version implements Comparable<Version> {
    private final int mMajor;
    private final int mMinor;
    private final int mPatch;
  
    /**
     * @param major major version
     * @param minor minor version
     * @param patch patch version
     */
    public Version(int major, int minor, int patch) {
      mMajor = major;
      mMinor = minor;
      mPatch = patch;
    }
  
    @Override
    public int compareTo(Version o) {
      if (mMajor != o.mMajor) {
        return mMajor - o.mMajor;
      }
      if (mMinor != o.mMinor) {
        return mMinor - o.mMinor;
      }
      if (mPatch != o.mPatch) {
        return mPatch - o.mPatch;
      }
      return 0;
    }
  
    @Override
    public boolean equals(Object o) {
      if (o == null) {
        return false;
      }
  
      if (!(o instanceof Version)) {
        return false;
      }
  
      Version other = (Version) o;
  
      return compareTo(other) == 0;
    }
  
    @Override
    public int hashCode() {
      return Objects.hashCode(mMajor, mMinor, mPatch);
    }
  
    @Override
    public String toString() {
      return String.format("%d.%d.%d", mMajor, mMinor, mPatch);
    }
  }
  