/**
* Short description of method takeOverFrom
*
* @access public
* @author Joel Bout, <*****@*****.**>
* @param ResponseProcessing responseProcessing
* @param Item item
* @return oat\taoQtiItem\model\qti\response\Composite
*/
public static function takeOverFrom(ResponseProcessing $responseProcessing, Item $item)
{
$returnValue = null;
if ($responseProcessing instanceof static) {
// already good
$returnValue = $responseProcessing;
} elseif ($responseProcessing instanceof Template) {
// IMS Template
$rp = new Summation($item, 'SCORE');
foreach ($item->getInteractions() as $interaction) {
$response = $interaction->getResponse();
try {
$irp = IrpTemplate::createByTemplate($responseProcessing->getUri(), $response, $item);
} catch (Exception $e) {
throw new TakeoverFailedException();
}
$rp->add($irp, $item);
}
$returnValue = $rp;
} elseif ($responseProcessing instanceof TemplatesDriven) {
// TemplateDriven
$rp = new Summation($item, 'SCORE');
foreach ($item->getInteractions() as $interaction) {
$response = $interaction->getResponse();
try {
$irp = IrpTemplate::createByTemplate($responseProcessing->getTemplate($response), $response, $item);
} catch (Exception $e) {
throw new TakeoverFailedException();
}
$rp->add($irp, $item);
}
$returnValue = $rp;
} else {
common_Logger::d('Composite ResponseProcessing can not takeover from ' . get_class($responseProcessing) . ' yet');
throw new TakeoverFailedException();
}
common_Logger::i('Converted to Composite', array('TAOITEMS', 'QTI'));
return $returnValue;
}
/**
* Short description of method buildCompositeResponseProcessing
*
* @access public
* @author Joel Bout, <*****@*****.**>
* @param DOMElement data
* @param Item item
* @return oat\taoQtiItem\model\qti\response\ResponseProcessing
*/
protected function buildCompositeResponseProcessing(DOMElement $data, Item $item)
{
$returnValue = null;
// STRONGLY simplified summation detection
$patternCorrectTAO = '/responseCondition [count(./*) = 1 ] [name(./*[1]) = "responseIf" ] [count(./responseIf/*) = 2 ] [name(./responseIf/*[1]) = "match" ] [name(./responseIf/match/*[1]) = "variable" ] [name(./responseIf/match/*[2]) = "correct" ] [name(./responseIf/*[2]) = "setOutcomeValue" ] [count(./responseIf/setOutcomeValue/*) = 1 ] [name(./responseIf/setOutcomeValue/*[1]) = "baseValue"]';
$patternMapTAO = '/responseCondition [count(./*) = 1 ] [name(./*[1]) = "responseIf" ] [count(./responseIf/*) = 2 ] [name(./responseIf/*[1]) = "not" ] [count(./responseIf/not/*) = 1 ] [name(./responseIf/not/*[1]) = "isNull" ] [count(./responseIf/not/isNull/*) = 1 ] [name(./responseIf/not/isNull/*[1]) = "variable" ] [name(./responseIf/*[2]) = "setOutcomeValue" ] [count(./responseIf/setOutcomeValue/*) = 1 ] [name(./responseIf/setOutcomeValue/*[1]) = "mapResponse"]';
$patternMapPointTAO = '/responseCondition [count(./*) = 1 ] [name(./*[1]) = "responseIf" ] [count(./responseIf/*) = 2 ] [name(./responseIf/*[1]) = "not" ] [count(./responseIf/not/*) = 1 ] [name(./responseIf/not/*[1]) = "isNull" ] [count(./responseIf/not/isNull/*) = 1 ] [name(./responseIf/not/isNull/*[1]) = "variable" ] [name(./responseIf/*[2]) = "setOutcomeValue" ] [count(./responseIf/setOutcomeValue/*) = 1 ] [name(./responseIf/setOutcomeValue/*[1]) = "mapResponsePoint"]';
$patternNoneTAO = '/responseCondition [count(./*) = 1 ] [name(./*[1]) = "responseIf" ] [count(./responseIf/*) = 2 ] [name(./responseIf/*[1]) = "isNull" ] [count(./responseIf/isNull/*) = 1 ] [name(./responseIf/isNull/*[1]) = "variable" ] [name(./responseIf/*[2]) = "setOutcomeValue" ] [count(./responseIf/setOutcomeValue/*) = 1 ] [name(./responseIf/setOutcomeValue/*[1]) = "baseValue"]';
$possibleSummation = '/setOutcomeValue [count(./*) = 1 ] [name(./*[1]) = "sum" ]';
$irps = array();
$composition = null;
$data = simplexml_import_dom($data);
foreach ($data as $responseRule) {
if (!is_null($composition)) {
throw new UnexpectedResponseProcessing('Not composite, rules after composition');
}
$subtree = new SimpleXMLElement($responseRule->asXML());
if (count($subtree->xpath($patternCorrectTAO)) > 0) {
$responseIdentifier = (string) $subtree->responseIf->match->variable[0]['identifier'];
$irps[$responseIdentifier] = array('class' => 'MatchCorrectTemplate', 'outcome' => (string) $subtree->responseIf->setOutcomeValue[0]['identifier']);
} elseif (count($subtree->xpath($patternMapTAO)) > 0) {
$responseIdentifier = (string) $subtree->responseIf->not->isNull->variable[0]['identifier'];
$irps[$responseIdentifier] = array('class' => 'MapResponseTemplate', 'outcome' => (string) $subtree->responseIf->setOutcomeValue[0]['identifier']);
} elseif (count($subtree->xpath($patternMapPointTAO)) > 0) {
$responseIdentifier = (string) $subtree->responseIf->not->isNull->variable[0]['identifier'];
$irps[$responseIdentifier] = array('class' => 'MapResponsePointTemplate', 'outcome' => (string) $subtree->responseIf->setOutcomeValue[0]['identifier']);
} elseif (count($subtree->xpath($patternNoneTAO)) > 0) {
$responseIdentifier = (string) $subtree->responseIf->isNull->variable[0]['identifier'];
$irps[$responseIdentifier] = array('class' => 'None', 'outcome' => (string) $subtree->responseIf->setOutcomeValue[0]['identifier'], 'default' => (string) $subtree->responseIf->setOutcomeValue[0]->baseValue[0]);
} elseif (count($subtree->xpath($possibleSummation)) > 0) {
$composition = 'Summation';
$outcomesUsed = array();
foreach ($subtree->xpath('/setOutcomeValue/sum/variable') as $var) {
$outcomesUsed[] = (string) $var[0]['identifier'];
}
} else {
throw new UnexpectedResponseProcessing('Not composite, unknown rule');
}
}
if (is_null($composition)) {
throw new UnexpectedResponseProcessing('Not composit, Composition rule missing');
}
$responses = array();
foreach ($item->getInteractions() as $interaction) {
$responses[$interaction->getResponse()->getIdentifier()] = $interaction->getResponse();
}
if (count(array_diff(array_keys($irps), array_keys($responses))) > 0) {
throw new UnexpectedResponseProcessing('Not composit, no responses for rules: ' . implode(',', array_diff(array_keys($irps), array_keys($responses))));
}
if (count(array_diff(array_keys($responses), array_keys($irps))) > 0) {
common_Logger::w('Some responses have no processing');
throw new UnexpectedResponseProcessing('Not composit, no support for unmatched variables yet');
}
//assuming sum is correct
$compositonRP = new Summation($item);
foreach ($responses as $id => $response) {
$outcome = null;
foreach ($item->getOutcomes() as $possibleOutcome) {
if ($possibleOutcome->getIdentifier() == $irps[$id]['outcome']) {
$outcome = $possibleOutcome;
break;
}
}
if (is_null($outcome)) {
throw new ParsingException('Undeclared Outcome in ResponseProcessing');
}
$classname = '\\oat\\taoQtiItem\\model\\qti\\response\\interactionResponseProcessing\\' . $irps[$id]['class'];
$irp = new $classname($response, $outcome);
if ($irp instanceof \oat\taoQtiItem\model\qti\response\interactionResponseProcessing\None && isset($irps[$id]['default'])) {
$irp->setDefaultValue($irps[$id]['default']);
}
$compositonRP->add($irp);
}
$returnValue = $compositonRP;
return $returnValue;
}