/**
     * Deletes all associated IssueFieldValues
     * @return void
     */
    public function DeleteAllIssueFieldValues()
    {
        if (is_null($this->intId)) {
            throw new QUndefinedPrimaryKeyException('Unable to call UnassociateIssueFieldValue on this unsaved IssueField.');
        }
        // Get the Database Object for this Class
        $objDatabase = IssueField::GetDatabase();
        // Journaling
        if ($objDatabase->JournalingDatabase) {
            foreach (IssueFieldValue::LoadArrayByIssueFieldId($this->intId) as $objIssueFieldValue) {
                $objIssueFieldValue->Journal('DELETE');
            }
        }
        // Perform the SQL Query
        $objDatabase->NonQuery('
				DELETE FROM
					`issue_field_value`
				WHERE
					`issue_field_id` = ' . $objDatabase->SqlVariable($this->intId) . '
			');
    }