events: added default values & removed magic

Author: dg

composer.json

@@ -18,7 +18,7 @@
 		"php": ">=7.2 <8.1",
 		"ext-pdo": "*",
 		"nette/caching": "^3.0",
-		"nette/utils": "^3.1"
+		"nette/utils": "^3.2.1"
 	},
 	"require-dev": {
 		"nette/tester": "^2.0",

src/Database/Connection.php

@@ -10,6 +10,7 @@
 namespace Nette\Database;
 
 use Nette;
+use Nette\Utils\Arrays;
 use PDO;
 use PDOException;
 
@@ -22,10 +23,10 @@ class Connection
 	use Nette\SmartObject;
 
 	/** @var callable[]&(callable(Connection $connection): void)[]; Occurs after connection is established */
-	public $onConnect;
+	public $onConnect = [];
 
 	/** @var callable[]&(callable(Connection $connection, ResultSet|DriverException $result): void)[]; Occurs after query is executed */
-	public $onQuery;
+	public $onQuery = [];
 
 	/** @var array */
 	private $params;
@@ -76,7 +77,7 @@ public function connect(): void
 		$this->driver = new $class;
 		$this->preprocessor = new SqlPreprocessor($this);
 		$this->driver->initialize($this, $this->options);
-		$this->onConnect($this);
+		Arrays::invoke($this->onConnect, $this);
 	}
 
 
@@ -186,10 +187,10 @@ public function query(string $sql, ...$params): ResultSet
 		try {
 			$result = new ResultSet($this, $this->sql, $params);
 		} catch (PDOException $e) {
-			$this->onQuery($this, $e);
+			Arrays::invoke($this->onQuery, $this, $e);
 			throw $e;
 		}
-		$this->onQuery($this, $result);
+		Arrays::invoke($this->onQuery, $this, $result);
 		return $result;
 	}