/**
*
* @throws Exception
* @return mixed
*/
public function fetchOne()
{
if ($this->getKind() !== self::ROWS) {
throw new Exception('Unexpected Response: ' . $this->getKind());
}
$this->offset = 4;
$this->_metadata = $this->_metadata ? array_merge($this->_metadata, $this->_readMetadata()) : $this->_readMetadata();
if (!isset($this->_metadata['columns'])) {
throw new Exception('Missing Result Metadata');
}
$rowCount = parent::readInt();
if ($rowCount === 0) {
return null;
}
foreach ($this->_metadata['columns'] as $column) {
return $this->readBytesAndConvertToType($column['type']);
}
return null;
}
