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