/**
* @param string $configFile
* @return Google\Analytics\QueryConfiguration
*/
public static function createFromXML($configFile)
{
if (!file_exists($configFile)) {
throw new InvalidArgumentException($configFile . ' does not exist.');
}
$xmlContent = file_get_contents($configFile);
if ($xmlContent === false) {
throw new RuntimeException('Unable to load XML from ' . $configFile . '.');
}
$xml = new \DOMDocument();
if (!$xml->loadXML($xmlContent)) {
throw new RuntimeException('Encountered error while parsing XML content.');
}
$globalArgs = array();
$xPath = new \DOMXPath($xml);
$result = $xPath->query('/conf');
if ($result->length != 1) {
throw new UnexpectedValueException('The XML configuration file must contain exactly one <conf> ' . 'element at the outermost level.');
}
$conf = $result->item(0);
$result = $xPath->query('queries', $conf);
if ($result->length != 1) {
throw new UnexpectedValueException('The <conf> element in the XML configuration file must ' . 'contain exactly one <queries> element.');
}
$queries = $xPath->query('query', $result->item(0));
$queryCount = $queries->length;
if (!$queryCount) {
throw new UnexpectedValueException('The <queries> element in the XML configuration must ' . 'contain at least one <query> element.');
}
$config = new self();
// Any attribute on the conf element is a global configuration value
foreach ($conf->attributes as $attName => $attVal) {
$globalArgs[$attName] = $attVal->nodeValue;
}
// This isn't allowed, obviously
if (isset($globalArgs['conf'])) {
throw new UnexpectedValueException('Cannot specify an XML configuration file within an XML ' . 'configuration file.');
}
$config->_validateArgs($globalArgs);
/* Merge the global arguments with each query's arguments as we go
through and build the queries. */
if ($queryCount == 1) {
foreach ($queries->item(0)->attributes as $attName => $attVal) {
$globalArgs[$attName] = $attVal->nodeValue;
}
$config->_query = self::_getQuery($globalArgs);
} else {
$r = new \ReflectionClass(__NAMESPACE__ . '\\GaDataQueryCollection');
$queryList = array();
for ($i = 0; $i < $queryCount; $i++) {
$args = $globalArgs;
foreach ($queries->item($i)->attributes as $attName => $attVal) {
$args[$attName] = $attVal->nodeValue;
}
$queryList[] = self::_getQuery($args);
}
$config->_query = $r->newInstanceArgs($queryList);
if (isset($globalArgs['group-name'])) {
$config->_query->setName($globalArgs['group-name']);
}
}
return $config;
}
