identifiereventhandler.php

<?php
 
namespace Bitrix\Calendar\Core\Handlers;
 
 
use Bitrix\Calendar\Core\Base\Collection;
use Bitrix\Calendar\Sync\Entities\SyncEventMap;
use Bitrix\Calendar\Internals\EventConnectionTable;
 
class IdentifierEventHandler extends HandlerBase
{
    private Collection $collection;
 
    public function __construct(SyncEventMap $collection)
    {
        $this->collection = $collection;
    }
 
    public function __invoke(): array
    {
        return EventConnectionTable::query()
            ->whereIn('VENDOR_EVENT_ID', array_keys($this->collection->getCollection()))
            ->setSelect(['VENDOR_EVENT_ID', 'ENTITY_TAG'])
            ->exec()
            ->fetchAll()
        ;
    }
}