/**
* Function to return singleton object
*
* @return object $_singleton
* @access public
* @static
*/
public static function &singleton()
{
if (self::$_singleton === NULL) {
self::$_singleton = new CRM_Groupprotect_Config();
}
return self::$_singleton;
}
/**
* Method to check if group is protected with custom field
*
* @param int $groupId
* @return boolean
* @throws Exception when API errors retrieving custom group and field
*/
private static function groupIsProtected($groupId)
{
$config = CRM_Groupprotect_Config::singleton();
$query = "SELECT " . $config->getGroupProtectCustomField('column_name') . " FROM " . $config->getGroupProtectCustomGroup('table_name') . " WHERE entity_id = %1";
return CRM_Core_DAO::singleValueQuery($query, array(1 => array($groupId, 'Integer')));
}