RelationNotification.java 文件源码

/**
 * Returns old value of updated role (only for role update).
 *
 * @return the old value of the updated role.
 */
public List<ObjectName> getOldRoleValue() {
    List<ObjectName> result;
    if (oldRoleValue != null) {
        result = new ArrayList<ObjectName>(oldRoleValue);
    } else {
        result = Collections.emptyList();
    }
    return result;
}