gov.nasa.pds.api.registry.model.identifiers.PdsVid Maven / Gradle / Ivy

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Registry API Service contributing to the PDS Federated Search API

There is a newer version: 4.5.6

package gov.nasa.pds.api.registry.model.identifiers;

public class PdsVid implements Comparable {
  private final int majorVersion;
  private final int minorVersion;

  public PdsVid(int majorVersion, int minorVersion) {
    if (majorVersion < 0) {
      String errMsg = String.format("majorVersion must be 0 or higher (got '%d'))", majorVersion);
      throw new IllegalArgumentException(errMsg);
    }

    if (minorVersion < 0) {
      String errMsg = String.format("minorVersion must be 0 or higher (got '%d'))", minorVersion);
      throw new IllegalArgumentException(errMsg);
    }

    this.majorVersion = majorVersion;
    this.minorVersion = minorVersion;
  }

  public static PdsVid fromString(String vidString) {
    String[] versionChunks = vidString.split("\\.");

    if (versionChunks.length != 2) {
      String errMsg = String.format("Provided value '%s' is not a valid VID", vidString);
      throw new IllegalArgumentException(errMsg);
    }

    int majorVersion = Integer.parseInt(versionChunks[0]);
    int minorVersion = Integer.parseInt(versionChunks[1]);

    return new PdsVid(majorVersion, minorVersion);
  }

  public int getMajorVersion() {
    return majorVersion;
  }

  public int getMinorVersion() {
    return minorVersion;
  }

  @Override
  public String toString() {
    return String.format("%d.%d", majorVersion, minorVersion);
  }

  @Override
  public boolean equals(Object other) {
    if (this == other) {
      return true;
    }

    if (!(other instanceof PdsVid)) {
      return false;
    }

    PdsVid otherAsVid = (PdsVid) other;
    return this.majorVersion == otherAsVid.getMajorVersion()
        && this.minorVersion == otherAsVid.getMinorVersion();
  }

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

  @Override
  public int compareTo(PdsVid o) {
    if (this.equals(o)) {
      return 0;
    }

    if (this.majorVersion == o.getMajorVersion()) {
      return Integer.compare(this.minorVersion, o.getMinorVersion());
    } else {
      return Integer.compare(this.majorVersion, o.getMajorVersion());
    }
  }
}