FileStorage is the base storage mechanism, providing the functionality of file access. The benefit of using FileStorage directly is in decreased memory consumption.
IEmbeddedConfiguration configuration = Db4oEmbedded.NewConfiguration();
IStorage fileStorage = new FileStorage();
configuration.File.Storage
= fileStorage;
IObjectContainer container = Db4oEmbedded.OpenFile(configuration, "database.db4o");
Dim configuration As IEmbeddedConfiguration = Db4oEmbedded.NewConfiguration() Dim fileStorage As IStorage = New FileStorage() configuration.File.Storage = fileStorage Dim container As IObjectContainer = Db4oEmbedded.OpenFile(configuration, "database.db4o")
Without cache, the file storage is significantly slower than with cache. Therefore this storage is normally used as underlying storage for other purposes. Typically it is used together with a CachingStorage on top of it:
IEmbeddedConfiguration configuration = Db4oEmbedded.NewConfiguration(); IStorage fileStorage = new FileStorage(); IStorage cachingStorage = new CachingStorage(fileStorage, 128, 1024); configuration.File.Storage = cachingStorage; IObjectContainer container = Db4oEmbedded.OpenFile(configuration, "database.db4o");
Dim configuration As IEmbeddedConfiguration = Db4oEmbedded.NewConfiguration() Dim fileStorage As IStorage = New FileStorage() Dim cachingStorage As IStorage = New CachingStorage(fileStorage, 128, 1024) configuration.File.Storage = cachingStorage Dim container As IObjectContainer = Db4oEmbedded.OpenFile(configuration, "database.db4o")