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<?php |
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namespace ClickHouseDB\Query; |
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use ClickHouseDB\Exception\QueryException; |
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class WriteToFile |
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{ |
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/** |
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* |
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*/ |
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const FORMAT_TabSeparated = 'TabSeparated'; |
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const FORMAT_TabSeparatedWithNames = 'TabSeparatedWithNames'; |
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const FORMAT_CSV = 'CSV'; |
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private $support_format = ['TabSeparated', 'TabSeparatedWithNames', 'CSV']; |
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/** |
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* @var string |
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*/ |
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private $file_name = null; |
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/** |
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* @var string |
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*/ |
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private $format = 'CSV'; |
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/** |
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* @var bool |
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*/ |
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private $gzip = false; |
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/** |
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* WriteToFile constructor. |
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* @param string $file_name |
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* @param bool $overwrite |
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* @param null $format |
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*/ |
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public function __construct($file_name, $overwrite = true, $format = null) { |
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if (!$file_name) |
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{ |
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throw new QueryException('Bad file path'); |
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} |
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if (is_file($file_name)) |
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{ |
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if (!$overwrite) |
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{ |
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throw new QueryException('File exists: ' . $file_name); |
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} |
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if (!unlink($file_name)) |
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{ |
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throw new QueryException('Can`t delete: ' . $file_name); |
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} |
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} |
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$dir = dirname($file_name); |
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if (!is_writable($dir)) |
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{ |
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throw new QueryException('Can`t writable dir: ' . $dir); |
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} |
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if ($format) |
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{ |
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$this->setFormat($format); |
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} |
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$this->file_name = $file_name; |
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} |
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/** |
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* @return bool |
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*/ |
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public function getGzip() |
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{ |
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return $this->gzip; |
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} |
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/** |
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* @param bool $flag |
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*/ |
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public function setGzip($flag) |
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{ |
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$this->gzip = $flag; |
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} |
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/** |
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* @param string $format |
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*/ |
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public function setFormat($format) |
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{ |
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if (!in_array($format, $this->support_format)) |
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{ |
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throw new QueryException('Unsupport format: ' . $format); |
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} |
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$this->format = $format; |
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} |
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/** |
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* @return int |
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*/ |
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public function size() |
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{ |
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return filesize($this->file_name); |
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} |
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/** |
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* @return string |
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*/ |
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public function fetchFile() |
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{ |
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return $this->file_name; |
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} |
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/** |
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* @return string |
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*/ |
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public function fetchFormat() |
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{ |
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return $this->format; |
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} |
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} |
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smi2 /
phpClickHouse
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