/**
* Set the QTI $version in use for this document.
*
* @param string $version A QTI version number e.g. '2.1.1'.
* @throws \InvalidArgumentException If $version is unknown regarding existing QTI versions.
*/
public function setVersion($version)
{
if (Version::isKnown($version) === true) {
$this->version = Version::appendPatchVersion($version);
} else {
$msg = "Version '{$version}' is not a known QTI version. Known versions are '" . implode(', ', Version::knownVersions()) . "'";
throw new InvalidArgumentException($msg);
}
}
/**
* Get the XML schema to use for a given QTI version.
*
* @return string A filename pointing at an XML Schema file.
*/
public static function getSchemaLocation($version = '2.1')
{
$dS = DIRECTORY_SEPARATOR;
$version = Version::appendPatchVersion($version);
if ($version === '2.1.0') {
$filename = dirname(__FILE__) . $dS . 'schemes' . $dS . 'imsqti_v2p1.xsd';
} elseif ($version === '2.1.1') {
$filename = dirname(__FILE__) . $dS . 'schemes' . $dS . 'imsqti_v2p1p1.xsd';
} elseif ($version === '2.2.0') {
$filename = dirname(__FILE__) . $dS . 'schemes' . $dS . 'imsqti_v2p2.xsd';
} else {
$filename = dirname(__FILE__) . $dS . 'schemes' . $dS . 'imsqti_v2p0.xsd';
}
return $filename;
}
