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"content": "<?php\n\ndeclare(strict_types=1);\n\nnamespace Infrastructure\\Config;\n\n\/\/ @responsibility: Factory für benannte Datenbankverbindungen (dev, content)\n\nuse PDO;\nuse RuntimeException;\n\nfinal class DatabaseFactory\n{\n private const array DATABASES = [\n 'dev' => 'ki_dev',\n 'content' => 'ki_content',\n ];\n\n \/** @var array<string, PDO> *\/\n private static array $connections = [];\n\n \/**\n * Gets the 'dev' database connection (ki_dev).\n *\n * Contains: dokumentation, dokumentation_chunks, tasks, contracts, protokoll\n *\/\n public static function dev(): PDO\n {\n return self::getConnection('dev');\n }\n\n \/**\n * Gets the 'content' database connection (ki_content).\n *\n * Contains: content studio data, semantic entities, relations\n *\/\n public static function content(): PDO\n {\n return self::getConnection('content');\n }\n\n \/**\n * Gets a connection by name.\n *\n * @param string $name Connection name ('dev' or 'content')\n *\/\n public static function getConnection(string $name): PDO\n {\n if (!isset(self::DATABASES[$name])) {\n throw new RuntimeException(\"Unknown database connection: {$name}\");\n }\n\n if (!isset(self::$connections[$name])) {\n self::$connections[$name] = self::createConnection(self::DATABASES[$name]);\n }\n\n return self::$connections[$name];\n }\n\n \/**\n * Closes all connections and clears the cache.\n *\/\n public static function closeAll(): void\n {\n self::$connections = [];\n }\n\n \/**\n * Creates a new PDO connection.\n *\/\n private static function createConnection(string $database): PDO\n {\n $password = CredentialService::getMariaDbPassword();\n\n return new PDO(\n \"mysql:host=localhost;dbname={$database};charset=utf8mb4\",\n 'root',\n $password,\n [\n PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,\n PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,\n PDO::ATTR_EMULATE_PREPARES => false,\n ]\n );\n }\n}\n",
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