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<?php |
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/** |
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* Plasma Driver MySQL component |
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* Copyright 2018-2019 PlasmaPHP, All Rights Reserved |
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* |
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* Website: https://github.com/PlasmaPHP |
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* License: https://github.com/PlasmaPHP/driver-mysql/blob/master/LICENSE |
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*/ |
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namespace Plasma\Drivers\MySQL\Commands; |
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/** |
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* Fetch command. |
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* @internal |
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*/ |
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class FetchCommand extends StatementExecuteCommand { |
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/** |
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* The identifier for this command. |
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* @var int |
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* @source |
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*/ |
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const COMMAND_ID = 0x1C; |
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/** |
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* @var \Plasma\Drivers\MySQL\StatementCursor |
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*/ |
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protected $cursor; |
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/** |
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* @var int |
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*/ |
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protected $amount; |
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/** |
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* @var array |
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*/ |
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protected $rows = array(); |
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/** |
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* Constructor. |
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* @param \Plasma\DriverInterface $driver |
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* @param \Plasma\Drivers\MySQL\StatementCursor $cursor |
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* @param mixed $id |
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* @param string $query |
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* @param array $params |
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* @param \Plasma\ColumnDefinitionInterface[] $paramsDef |
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* @param \Plasma\ColumnDefinitionInterface[] $fields |
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* @param int $amount |
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*/ |
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function __construct( |
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\Plasma\DriverInterface $driver, |
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\Plasma\Drivers\MySQL\StatementCursor $cursor, |
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$id, |
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string $query, |
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array $params, |
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array $paramsDef, |
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array $fields, |
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int $amount |
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) { |
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parent::__construct($driver, $id, $query, $params, $paramsDef, 0); |
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$this->cursor = $cursor; |
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$this->fields = $fields; |
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$this->amount = $amount; |
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$this->on('data', function ($row) { |
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$this->rows[] = $row; |
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}); |
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$this->removeAllListeners('end'); |
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$this->once('end', function () { |
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// Let the event loop read the stream buffer before resolving |
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$this->driver->getLoop()->futureTick(function () { |
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// Unwrap if we only have one row |
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$crows = \count($this->rows); |
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$rows = ($crows === 1 ? \reset($this->rows) : ($crows === 0 ? false : $this->rows)); |
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$this->deferred->resolve($rows); |
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$this->rows = null; |
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}); |
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}); |
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} |
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/** |
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* Get the encoded message for writing to the database connection. |
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* @return string |
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*/ |
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function getEncodedMessage(): string { |
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$packet = \chr(static::COMMAND_ID); |
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$packet .= \Plasma\BinaryBuffer::writeInt4($this->id); |
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$packet .= \Plasma\BinaryBuffer::writeInt4($this->amount); |
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return $packet; |
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} |
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/** |
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* Sends the next received value into the command. |
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* @param mixed $value |
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* @return void |
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*/ |
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function onNext($value): void { |
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if($value instanceof \Plasma\Drivers\MySQL\ProtocolOnNextCaller) { |
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$this->handleQueryOnNextCaller($value); |
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} elseif($value instanceof \Plasma\Drivers\MySQL\Messages\OkResponseMessage || $value instanceof \Plasma\Drivers\MySQL\Messages\EOFMessage) { |
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$this->cursor->processOkMessage($value); |
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$value->getParser()->markCommandAsFinished($this); |
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} |
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} |
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} |
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PlasmaPHP /
driver-mysql
