/**
* Initializes the XPathFlattenRecord from the given parameter array.
* @param $spec associative array of options. See class-level documentation for details.
*/
function __construct($spec)
{
FlattenRecord::__construct($spec);
}
public function extractRecord($data)
{
if ($this->transformer) {
$rec = $this->transformer->extractRecord($data);
} else {
$rec = FlattenRecord::naiveResolvePath($data, $this->dataPath);
}
return $rec;
}
public static function naiveResolvePath($data, $path, $split = true)
{
if (is_object($data)) {
if ($dom instanceof DOMNode) {
throw new MWException("naiveResolvePath does not like DOMNode objects");
}
$data = wfObjectToArray($data);
}
if (!is_array($data) || $path === '.') {
return $data;
}
if ($split && is_string($path)) {
$path = DataTransclusionSource::splitList($path, '/');
}
if (is_string($path) || is_int($path)) {
return @$data[$path];
}
if (!$path) {
return $data;
}
$p = array_shift($path);
if (is_string($p) && preg_match('/^(@)?(\\d+)$/', $p, $m)) {
//numberic index
$i = (int) $m[2];
if ($m[1]) {
//meta-index
$k = array_keys($data);
$p = $k[$i];
}
}
if (!isset($data[$p])) {
return false;
}
$next = $data[$p];
if ($next && $path) {
return FlattenRecord::naiveResolvePath($next, $path);
} else {
return $next;
}
//TODO: named components. separator??
}
/**
* Resolvs the given path on the $data structure. Delegates to FlattenRecord::naiveResolvePath(),
* but may be overridden to change that.
*/
public function resolvePath($data, $path, $split = true)
{
return FlattenRecord::naiveResolvePath($data, $path, $split);
}
