public DbEngine(IDiskService disk, Logger log)
{
// initialize disk service and check if database exists
var isNew = disk.Initialize();
// new database? create new datafile
if (isNew)
{
disk.CreateNew();
}
_log = log;
_disk = disk;
// initialize all services
_cache = new CacheService();
_pager = new PageService(_disk, _cache);
_indexer = new IndexService(_pager);
_data = new DataService(_pager);
_collections = new CollectionService(_pager, _indexer, _data);
_transaction = new TransactionService(_disk, _pager, _cache);
}
