bulk save items when possible

This commit is contained in:
Luke Pulverenti
2013-05-23 11:39:48 -04:00
parent 6253578629
commit f546f09c71
6 changed files with 80 additions and 44 deletions

View File

@@ -135,7 +135,7 @@ namespace MediaBrowser.Server.Implementations.Sqlite
/// <summary>
/// The _write lock
/// </summary>
private readonly SemaphoreSlim _writeLock = new SemaphoreSlim(1,1);
private readonly SemaphoreSlim _writeLock = new SemaphoreSlim(1, 1);
/// <summary>
/// Prepares the statements.
@@ -172,13 +172,34 @@ namespace MediaBrowser.Server.Implementations.Sqlite
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException">item</exception>
public async Task SaveItem(BaseItem item, CancellationToken cancellationToken)
public Task SaveItem(BaseItem item, CancellationToken cancellationToken)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
return SaveItems(new[] { item }, cancellationToken);
}
/// <summary>
/// Saves the items.
/// </summary>
/// <param name="items">The items.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException">
/// items
/// or
/// cancellationToken
/// </exception>
public async Task SaveItems(IEnumerable<BaseItem> items, CancellationToken cancellationToken)
{
if (items == null)
{
throw new ArgumentNullException("items");
}
if (cancellationToken == null)
{
throw new ArgumentNullException("cancellationToken");
@@ -186,8 +207,6 @@ namespace MediaBrowser.Server.Implementations.Sqlite
cancellationToken.ThrowIfCancellationRequested();
var serialized = _jsonSerializer.SerializeToBytes(item);
await _writeLock.WaitAsync(cancellationToken).ConfigureAwait(false);
SQLiteTransaction transaction = null;
@@ -196,13 +215,18 @@ namespace MediaBrowser.Server.Implementations.Sqlite
{
transaction = Connection.BeginTransaction();
_saveItemCommand.Parameters[0].Value = item.Id;
_saveItemCommand.Parameters[1].Value = item.GetType().FullName;
_saveItemCommand.Parameters[2].Value = serialized;
foreach (var item in items)
{
cancellationToken.ThrowIfCancellationRequested();
_saveItemCommand.Parameters[0].Value = item.Id;
_saveItemCommand.Parameters[1].Value = item.GetType().FullName;
_saveItemCommand.Parameters[2].Value = _jsonSerializer.SerializeToBytes(item);
_saveItemCommand.Transaction = transaction;
_saveItemCommand.Transaction = transaction;
await _saveItemCommand.ExecuteNonQueryAsync(cancellationToken);
await _saveItemCommand.ExecuteNonQueryAsync(cancellationToken);
}
transaction.Commit();
}
@@ -400,7 +424,7 @@ namespace MediaBrowser.Server.Implementations.Sqlite
foreach (var child in children)
{
_saveChildrenCommand.Transaction = transaction;
_saveChildrenCommand.Parameters[0].Value = id;
_saveChildrenCommand.Parameters[1].Value = child.Id;