BlackholeEngine.php
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BlackholeEngine.php
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	<?php

	namespace Keruald\Database\Engines;

	use Keruald\Database\DatabaseEngine;
	use Keruald\Database\Result\DatabaseResult;

	class BlackholeEngine extends DatabaseEngine {

	public function escape (string $expression) : string {
	return $expression;
	}

	public function query (string $query) : bool\|DatabaseResult {
	return true;
	}

	public function nextId () : int\|string {
	return 0;
	}

	public function countAffectedRows () : int {
	return 0;
	}

	protected function getExceptionContext () : array {
	return [];
	}

	public static function load (array $config): DatabaseEngine {
	return new self;
	}

	public function getUnderlyingDriver () : null {
	return null;
	}

	public function isExistingTable (string $database, string $table) : bool {
	// Everything and nothing exists in a black hole
	return true;
	}

	///
	/// Error handling
	///

	public function error () : array {
	return [];
	}

	///
	/// Events
	///

	protected function onCantConnectToHost () : void {
	// We can always connect to a black hole engine.
	}

	protected function onQueryError (string $query) : void {
	// Queries are always valid.
	}
	}