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Public API for the Structure Plugin for JIRA

There is a newer version: 17.25.3

package com.almworks.jira.structure.api2g;

public class DataVersion {
  public static final DataVersion ZERO = new DataVersion(0, 0);

  private final int mySignature;
  private final int myVersion;

  public DataVersion(int signature, int version) {
    mySignature = signature;
    myVersion = version;
  }

  public boolean isComparable(DataVersion anotherVersion) {
    return mySignature == anotherVersion.getSignature();
  }

  public boolean isBefore(DataVersion anotherVersion) {
    if (!isComparable(anotherVersion)) {
      assert false : this + " vs. " + anotherVersion;
      return false;
    }
    return myVersion < anotherVersion.getVersion();
  }

  public DataVersion increment() {
    return increment(1);
  }

  public DataVersion increment(int count) {
    if (count < 0) {
      throw new IllegalArgumentException("version cannot decrement");
    }
    return new DataVersion(mySignature, myVersion + count);
  }

  /**
   * Signature defines the identity of the version sequence. Only versions within the same signature can be compared.
   *
   * @return the signature of the version sequence
   */
  public int getSignature() {
    return mySignature;
  }

  /**
   * @return the version
   */
  public int getVersion() {
    return myVersion;
  }

  public String toString() {
    return String.format("%08x:%d", mySignature, myVersion);
  }

  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;

    DataVersion that = (DataVersion) o;

    if (mySignature != that.mySignature) return false;
    if (myVersion != that.myVersion) return false;

    return true;
  }

  public int hashCode() {
    int result = mySignature;
    result = 31 * result + myVersion;
    return result;
  }
}