public function delete($rowNum)
{
$this->writeLock();
if ($data = $this->read($rowNum)) {
$rowPosition = $this->meta->lengthTilData + $this->meta->rowLength() * ($rowNum - 1);
fseek($this->dataHandle, $rowPosition);
fwrite($this->dataHandle, pack('a' . $this->meta->rowLength(), ''), $this->meta->rowLength());
index::delete($this->table, $this->indexString($data, $this->meta->indexes));
}
}
