/**
* @param string $name
* @return string
*/
public function extractValue($name)
{
if (isset($this->extractedValues[$name])) {
return $this->extractedValues[$name];
}
$mapping = isset($this->itemMapping[$name]) ? $this->itemMapping[$name] : $name;
if (is_string($mapping)) {
$mapping = array('selector' => $mapping);
}
$value = !empty($mapping['defaultValue']) ? $mapping['defaultValue'] : '';
if (empty($mapping['selector']) && empty($mapping['defaultValue'])) {
throw new \RuntimeException('Missing \'selector\' or \'defaultValue\' for ' . htmlentities($name) . ' mapping');
}
if (!empty($mapping['selector'])) {
if (!empty($mapping['source'])) {
$source = $this->extractorService->extractValue($this->item, $mapping['source']);
$source = $this->extractorService->fetchRawContent($source);
try {
$item = qp($source);
} catch (\QueryPath\Exception $e) {
$item = htmlqp($source);
}
} else {
$item = $this->item;
}
$value = $this->extractorService->extractValue($item, $mapping, $value);
}
$this->extractedValues[$name] = $value;
return $this->extractedValues[$name];
}
