/**
* Get an existing treatment.
*
* Retrieve the current treatment in use by a Experiment/id combo. Returns null if not yet in use.
*
* @param Scenario_Experiment $experiment
* @param Scenario_Identity $id
* @return Scenario_Treatment|null
*/
public function GetTreatmentForIdentity(Scenario_Experiment $experiment, Scenario_Identity $id)
{
if ($experiment->getRowID() === null) {
$parent = $experiment->getParent();
$experiment_id = $this->GetExperimentID($experiment->getExperimentID(), $parent === null ? null : $parent->getRowID());
} else {
$experiment_id = $experiment->getRowID();
}
if ($experiment_id == null) {
return null;
}
$query = $this->getDbAdapter()->select()->from($this->usersTreatmentsTable)->joinLeft($this->treatmentsTable, $this->treatmentsTable . '.id = ' . $this->usersTreatmentsTable . '.treatment_id')->where('identity = ?', $id->getDbIdent())->where($this->treatmentsTable . '.experiment_id = ?', $experiment_id);
$result = $this->getDbAdapter()->fetchRow($query);
if ($result === false) {
return null;
}
/**
* @see Scenario_Treatment
*/
require_once 'Scenario/Treatment.php';
return new Scenario_Treatment($result['name'], $experiment, $result['id']);
}