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Arsse/lib/Db/Driver.php
J. King c37d476ba0 Changes to Database internals
- Driver->prepare() can now take a new Database\Query object as the first parameter
- The Query class allows for building a complex query out of a main body, common table expressions, WHERE coniditions, ordering conditions, a limit, and offset
- The subscriptionList method is the prototypical example of usage
- The experimental articleList method will in time be adapted to use this as well
- A generic means of specifying a selection context is forthcoming; this would remove subscriptionList's $folder and $id parameters, for instance
2017-06-04 18:00:18 -04:00

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PHP

<?php
declare(strict_types=1);
namespace JKingWeb\Arsse\Db;
interface Driver {
const TR_PEND = 0;
const TR_COMMIT = 1;
const TR_ROLLBACK = 2;
const TR_PEND_COMMIT = -1;
const TR_PEND_ROLLBACK = -2;
function __construct(bool $install = false);
// returns a human-friendly name for the driver (for display in installer, for example)
static function driverName(): string;
// returns the version of the scheme of the opened database; if uninitialized should return 0
function schemaVersion(): int;
// return a Transaction object
function begin(): Transaction;
// manually begin a real or synthetic transactions, with real or synthetic nesting
function savepointCreate(): int;
// manually commit either the latest or all pending nested transactions
function savepointRelease(int $index = null): bool;
// manually rollback either the latest or all pending nested transactions
function savepointUndo(int $index = null): bool;
// attempt to advise other processes that they should not attempt to access the database; used during live upgrades
function lock(): bool;
function unlock(): bool;
function isLocked(): bool;
// attempt to perform an in-place upgrade of the database schema; this may be a no-op which always throws an exception
function schemaUpdate(int $to): bool;
// execute one or more unsanitized SQL queries and return an indication of success
function exec(string $query): bool;
// perform a single unsanitized query and return a result set
function query(string $query): Result;
// ready a prepared statement for later execution
function prepare($query, ...$paramType): Statement;
function prepareArray($query, array $paramTypes): Statement;
}