PHP code example of semitexa / ledger

1. Go to this page and download the library: Download semitexa/ledger library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

semitexa / ledger example snippets


use Semitexa\Core\Attribute\AsEvent;
use Semitexa\Ledger\Attribute\Propagated;

#[AsEvent]
#[Propagated(domain: 'inventory')]
final class StockAdjusted
{
    private string $productId;
    private int $delta;

    public function getProductId(): string { return $this->productId; }
    public function getDelta(): int { return $this->delta; }
}


use Semitexa\Ledger\Attribute\AsAggregateCommand;
use Semitexa\Ledger\Attribute\OwnedAggregate;
use Semitexa\Ledger\Attribute\Propagated;

#[Propagated(domain: 'inventory')]
#[OwnedAggregate(type: 'product', idField: 'product_id', creates: true)]
final class ProductCreated {}

#[AsAggregateCommand(aggregateType: 'product', aggregateIdField: 'product_id')]
final readonly class UpdateProductPrice
{
    public function __construct(
        public string $product_id,
        public float $new_price,
    ) {}
}


use Semitexa\Ledger\Attribute\AsReplayHandler;
use Semitexa\Ledger\Domain\Contract\ReplayHandlerInterface;
use Semitexa\Ledger\Dto\LedgerEvent;

#[AsReplayHandler(domain: 'inventory', eventType: 'stock_adjusted')]
final class StockAdjustedReplayHandler implements ReplayHandlerInterface
{
    public function apply(LedgerEvent $event): void
    {
        // Update local projections idempotently using $event->eventId.
    }
}