public static void FileStorage()
{
// #example: Using the pure file storage
IEmbeddedConfiguration configuration = Db4oEmbedded.NewConfiguration();
IStorage fileStorage = new FileStorage();
configuration.File.Storage = fileStorage;
IObjectContainer container = Db4oEmbedded.OpenFile(configuration, "database.db4o");
// #end example
}
public static void CachingStorage()
{
// #example: Using a caching storage
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");
// #end example
}
public static void NonFlushingStorage()
{
// #example: Using the non-flushing storage
IEmbeddedConfiguration configuration = Db4oEmbedded.NewConfiguration();
IStorage fileStorage = new FileStorage();
// the non-flushing storage improves performance, but risks database corruption.
IStorage cachingStorage = new NonFlushingStorage(fileStorage);
configuration.File.Storage = cachingStorage;
IObjectContainer container = Db4oEmbedded.OpenFile(configuration, "database.db4o");
// #end example
}
public static void StorageStack()
{
IEmbeddedConfiguration configuration = Db4oEmbedded.NewConfiguration();
// #example: You stack up different storage-decorator to add functionality
// the basic file storage
IStorage fileStorage = new FileStorage();
// add your own decorator
IStorage myStorageDecorator = new MyStorageDecorator(fileStorage);
// add caching to the storage
IStorage storageWithCaching = new CachingStorage(myStorageDecorator);
// finally configure db4o with our storage-stack
configuration.File.Storage = storageWithCaching;
// #end example
IObjectContainer container = Db4oEmbedded.OpenFile(configuration, "database.db4o");
}
/// <exception cref="System.IO.IOException"></exception>
internal static LocalObjectContainer FreshTempFile(string fileName, int blockSize
)
{
FileStorage storage = new FileStorage();
storage.Delete(fileName);
IConfiguration db4oConfig = DefragmentConfig.VanillaDb4oConfig(blockSize);
db4oConfig.ObjectClass(typeof(IdSlotMapping)).ObjectField("_id").Indexed(true);
db4oConfig.Storage = storage;
return (LocalObjectContainer)Db4oFactory.OpenFile(db4oConfig, fileName).Ext();
}
/// <exception cref="System.Exception"></exception>
public virtual void Test()
{
if (CommonAndLocalConfigurationTestSuite.Subject() is IClientConfiguration)
{
return;
}
IFileConfigurationProvider config = ((IFileConfigurationProvider)Subject());
IFileConfiguration fileConfig = config.File;
Config4Impl legacyConfig = Db4oLegacyConfigurationBridge.AsLegacy(config);
fileConfig.BlockSize = 42;
Assert.AreEqual(42, legacyConfig.BlockSize());
fileConfig.DatabaseGrowthSize = 42;
Assert.AreEqual(42, legacyConfig.DatabaseGrowthSize());
fileConfig.DisableCommitRecovery();
Assert.IsTrue(legacyConfig.CommitRecoveryDisabled());
fileConfig.Freespace.DiscardSmallerThan(8);
Assert.AreEqual(8, legacyConfig.DiscardFreeSpace());
fileConfig.GenerateUUIDs = ConfigScope.Globally;
Assert.AreEqual(ConfigScope.Globally, legacyConfig.GenerateUUIDs());
fileConfig.GenerateCommitTimestamps = true;
Assert.IsTrue(legacyConfig.GenerateCommitTimestamps().DefiniteYes());
IStorage storageFactory = new FileStorage();
fileConfig.Storage = storageFactory;
Assert.AreSame(storageFactory, legacyConfig.Storage);
Assert.AreSame(storageFactory, fileConfig.Storage);
fileConfig.LockDatabaseFile = true;
Assert.IsTrue(legacyConfig.LockFile());
fileConfig.ReserveStorageSpace = 1024;
Assert.AreEqual(1024, legacyConfig.ReservedStorageSpace());
fileConfig.BlobPath = Path.GetTempPath();
Assert.AreEqual(Path.GetTempPath(), legacyConfig.BlobPath());
fileConfig.ReadOnly = true;
Assert.IsTrue(legacyConfig.IsReadOnly());
ICacheConfigurationProvider cacheProvider = ((ICacheConfigurationProvider)Subject
());
ICacheConfiguration cache = cacheProvider.Cache;
IIdSystemConfigurationProvider idSystemConfigurationProvider = ((IIdSystemConfigurationProvider
)Subject());
IIdSystemConfiguration idSystemConfiguration = idSystemConfigurationProvider.IdSystem;
Assert.AreEqual(StandardIdSystemFactory.Default, legacyConfig.IdSystemType());
idSystemConfiguration.UseStackedBTreeSystem();
Assert.AreEqual(StandardIdSystemFactory.StackedBtree, legacyConfig.IdSystemType()
);
idSystemConfiguration.UsePointerBasedSystem();
Assert.AreEqual(StandardIdSystemFactory.PointerBased, legacyConfig.IdSystemType()
);
}
private IEmbeddedConfiguration NewConfiguration(int itemCount)
{
FileStorage rafAdapter = new FileStorage();
IStorage ioAdapter = new LoggingStorage(rafAdapter, LogFileName(itemCount));
IEmbeddedConfiguration config = Db4oEmbedded.NewConfiguration();
config.File.Storage = ioAdapter;
return config;
}
