private bool CreateDbConnection()
{
try
{
if (_db != null)
{
_db.Close();
_db.Dispose();
System.IO.File.Delete(_databaseName);
}
_dbConfig = Db4oEmbedded.NewConfiguration();
_dbConfig.Common.ObjectClass(typeof(TrackData)).ObjectField("_id").Indexed(true);
_dbConfig.Common.ActivationDepth = 3; // To increase performance
_dbConfig.Common.ObjectClass(typeof(TrackData)).CascadeOnUpdate(true);
IStorage fileStorage = new FileStorage();
IStorage cachingStorage = new CachingStorage(fileStorage, 128, 2048);
_dbConfig.File.Storage = cachingStorage;
_db = Db4oEmbedded.OpenFile(_dbConfig, _databaseName);
return(true);
}
catch (Exception ex)
{
ServiceScope.Get <ILogger>().GetLogger.Error("Error creating DB Connection. Database Mode disabled. {0}", ex.Message);
}
return(false);
}
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 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");
}
