Civicm change UFID to ContactID relationship programatically

Question

How can I programatically change the ufid and contact id of CIVICRM?

I know the table civicrm_uf_match holds the matching ids but even if I change that it doesn't matter. It seems like the ids are put into session but even if I try to change the session variables via:

$session =& CRM_Core_Session::singleton( );
$session->set( 'userID' , $myjoomauserid); 
$session->set( 'ufID' $mycivicid); 

everytime I click renew member its the same member. I need to be able to change it all on the fly for my custom user interface. It allows a user to view all civicrm contacts and memberships associated with one email address. Then the user can edit renew whichever ones they want -- I created this to allow families to be able to edit there kids and for clubs to edit their members. Any help with how this works would be geatly appretiated. I used to set the ids in the civicrm_uf_match programatically then log the user out of joomla and log them back in but that doesnt seem to work anymore since the civicrm uprade to 4.6

I am not sure if synchronizeUFMatch as seen in some of the ecode is the route i neeed to look into such as

$ufmatch = self::synchronizeUFMatch($user, $userSystemID, $uniqId, $uf, NULL, $ctype, $isLogin);

Answer 1

Does Joomla have an equivalent of Masquerade, where you can temporarily become another user? This can also (once per request) be done programmatically with the masquerade_switch_user and masquerade_switch_back functions.

Answer 2

Well as usual it turns out to be simple. I just need to manually make the link in civicrm_uf_match via my program then simply change the session variables via:

require_once 'administrator/components/com_civicrm/civicrm.settings.php'; require_once 'administrator/components/com_civicrm/civicrm/CRM/Core/Config.php'; require_once 'administrator/components/com_civicrm/civicrm/api/v3/UFMatch.php'; require_once 'administrator/components/com_civicrm/civicrm.settings.php'; require_once('CRM/Core/DAO.php');

$session = CRM_Core_Session::singleton();

$session->set('ufID' , $ufid);     //joomla ID
$session->set('userID' , $userid); //civi contact id