/**
* Convert service response into format acceptable by SoapServer.
*
* @param object|array|string|int|float|null $data
* @return array
* @throws \InvalidArgumentException
*/
protected function _prepareResponseData($data)
{
$result = null;
if ($data instanceof AbstractSimpleObject) {
$result = $this->_dataObjectConverter->convertKeysToCamelCase($data->__toArray());
} elseif (is_array($data)) {
foreach ($data as $key => $value) {
if ($value instanceof AbstractSimpleObject) {
$result[] = $this->_dataObjectConverter->convertKeysToCamelCase($value->__toArray());
} else {
$result[$key] = $value;
}
}
} elseif (is_scalar($data) || is_null($data)) {
$result = $data;
} else {
throw new \InvalidArgumentException("Service returned result in invalid format.");
}
return array(self::RESULT_NODE_NAME => $result);
}