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<?php |
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/** |
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* Plasma Driver MySQL component |
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* Copyright 2018 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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* Query command. |
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* @internal |
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*/ |
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class QueryCommand extends PromiseCommand { |
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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 = 0x03; |
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/** |
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* @var string |
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*/ |
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protected $query; |
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/** |
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* @var \Plasma\ColumnDefinitionInterface[] |
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*/ |
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protected $fields = array(); |
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/** |
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* @var \Plasma\StreamQueryResult|\Plasma\QueryResult|null |
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*/ |
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protected $resolveValue; |
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/** |
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* @var bool |
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*/ |
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protected $deprecatedEOF; |
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/** |
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* Constructor. |
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* @param \Plasma\DriverInterface $driver |
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* @param string $query |
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*/ |
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function __construct(\Plasma\DriverInterface $driver, string $query) { |
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parent::__construct($driver); |
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$this->driver = $driver; |
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$this->query = $query; |
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$this->deprecatedEOF = (($driver->getHandshake()->capability & \Plasma\Drivers\MySQL\CapabilityFlags::CLIENT_DEPRECATE_EOF) !== 0); |
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} |
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/** |
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* Get the encoded message for writing to the database connection. |
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* @return string |
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*/ |
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function getEncodedMessage(): string { |
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return \chr(static::COMMAND_ID).$this->query; |
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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 || $value instanceof \Plasma\Drivers\MySQL\Messages\EOFMessage) { |
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if($this->resolveValue !== null) { |
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$value->getParser()->markCommandAsFinished($this); |
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} elseif($this->fieldsCount == 0 && $value instanceof \Plasma\Drivers\MySQL\Messages\OkResponseMessage) { // Matching 0 and null |
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$this->resolveValue = new \Plasma\QueryResult($value->affectedRows, $value->warningsCount, $value->lastInsertedID); |
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$value->getParser()->markCommandAsFinished($this); |
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} else { |
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$this->createResolve(); |
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} |
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} |
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} |
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/** |
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* Handles query commands on next caller. |
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* @param \Plasma\Drivers\MySQL\ProtocolOnNextCaller $value |
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* @return void |
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*/ |
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function handleQueryOnNextCaller(\Plasma\Drivers\MySQL\ProtocolOnNextCaller $value): void { |
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$buffer = $value->getBuffer(); |
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$parser = $value->getParser(); |
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if($this->resolveValue !== null) { |
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$row = $this->parseResultsetRow($buffer); |
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$this->emit('data', array($row)); |
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} else { |
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$field = $this->handleQueryOnNextCallerColumns($buffer, $parser); |
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if($field) { |
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$this->fields[$field->getName()] = $field; |
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} |
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if($this->deprecatedEOF && $this->fieldsCount <= \count($this->fields)) { |
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$this->createResolve(); |
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} |
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} |
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} |
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/** |
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* Creates the resolve value and resolves the promise. |
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* @return void |
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*/ |
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function createResolve(): void { |
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$this->resolveValue = new \Plasma\StreamQueryResult($this->driver, $this, 0, 0, $this->fields, null); |
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$this->deferred->resolve($this->resolveValue); |
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} |
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/** |
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* Whether the sequence ID should be resetted. |
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* @return bool |
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*/ |
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4 |
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function resetSequence(): bool { |
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return true; |
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} |
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} |
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PlasmaPHP /
driver-mysql
