pull/956/head
Bond_009 5 years ago
parent 45c13141f9
commit 29ae7b9aeb

@ -16,28 +16,78 @@ namespace Emby.Server.Implementations.Data
Logger = logger;
}
/// <summary>
/// Gets or sets the path to the DB file.
/// </summary>
/// <value>Path to the DB file.</value>
protected string DbFilePath { get; set; }
/// <summary>
/// Gets the logger.
/// </summary>
/// <value>The logger.</value>
protected ILogger Logger { get; }
/// <summary>
/// Gets the default connection flags.
/// </summary>
/// <value>The default connection flags.</value>
protected virtual ConnectionFlags DefaultConnectionFlags => ConnectionFlags.NoMutex;
/// <summary>
/// Gets the transaction mode.
/// </summary>
/// <value>The transaction mode.</value>>
protected TransactionMode TransactionMode => TransactionMode.Deferred;
/// <summary>
/// Gets the transaction mode for read-only operations.
/// </summary>
/// <value>The transaction mode.</value>
protected TransactionMode ReadTransactionMode => TransactionMode.Deferred;
/// <summary>
/// Gets the cache size.
/// </summary>
/// <value>The cache size or null.</value>
protected virtual int? CacheSize => null;
/// <summary>
/// Gets the journal mode.
/// </summary>
/// <value>The journal mode.</value>
protected virtual string JournalMode => "WAL";
/// <summary>
/// Gets the page size.
/// </summary>
/// <value>The page size or null.</value>
protected virtual int? PageSize => null;
/// <summary>
/// Gets the temp store mode.
/// </summary>
/// <value>The temp store mode.</value>
/// <see cref="TempStoreMode"/>
protected virtual TempStoreMode TempStore => TempStoreMode.Default;
/// <summary>
/// Gets the synchronous mode.
/// </summary>
/// <value>The synchronous mode or null.</value>
/// <see cref="SynchronousMode"/>
protected virtual SynchronousMode? Synchronous => null;
/// <summary>
/// Gets or sets the write lock.
/// </summary>
/// <value>The write lock.</value>
protected SemaphoreSlim WriteLock { get; set; } = new SemaphoreSlim(1, 1);
/// <summary>
/// Gets or sets the write connection.
/// </summary>
/// <value>The write connection.</value>
protected SQLiteDatabaseConnection WriteConnection { get; set; }
protected ManagedConnection GetConnection(bool _ = false)
@ -182,18 +232,54 @@ namespace Emby.Server.Implementations.Data
}
}
/// <summary>
/// The disk synchronization mode, controls how aggressively SQLite will write data
/// all the way out to physical storage.
/// </summary>
public enum SynchronousMode
{
/// <summary>
/// SQLite continues without syncing as soon as it has handed data off to the operating system
/// </summary>
Off = 0,
/// <summary>
/// SQLite database engine will still sync at the most critical moments
/// </summary>
Normal = 1,
/// <summary>
/// SQLite database engine will use the xSync method of the VFS
/// to ensure that all content is safely written to the disk surface prior to continuing.
/// </summary>
Full = 2,
/// <summary>
/// EXTRA synchronous is like FULL with the addition that the directory containing a rollback journal
/// is synced after that journal is unlinked to commit a transaction in DELETE mode.
/// </summary>
Extra = 3
}
/// <summary>
/// Storage mode used by temporary database files.
/// </summary>
public enum TempStoreMode
{
/// <summary>
/// The compile-time C preprocessor macro SQLITE_TEMP_STORE
/// is used to determine where temporary tables and indices are stored.
/// </summary>
Default = 0,
/// <summary>
/// Temporary tables and indices are stored in a file.
/// </summary>
File = 1,
/// <summary>
/// Temporary tables and indices are kept in as if they were pure in-memory databases memory.
/// </summary>
Memory = 2
}
}

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