/// <summary>
/// Returns an <see cref="UploadState"/> for a given post-back ID.
/// or null if none exists.
/// </summary>
/// <param name="postBackID">
/// A post-back ID identifying the <see cref="UploadState"/>.
/// </param>
/// <returns>
/// The <see cref="IUploadState"/> corresponding to
/// <paramref name="postBackID"/>, or null if none-exists.
/// </returns>
public static UploadState OpenReadWrite(string postBackID)
{
UploadState uploadState = Provider.Load(postBackID);
if (uploadState != null)
{
if (uploadState.DeleteAfterDelayWhenNotOpenReadWrite)
{
CancelDeleteAfterDelay(uploadState.PostBackID);
}
UploadState uploadStateCopy = new UploadState();
uploadStateCopy.CopyFrom(uploadState);
uploadStateCopy.IsWritable = true;
uploadStateCopy.DeleteAfterDelayWhenNotOpenReadWrite
= uploadState.DeleteAfterDelayWhenNotOpenReadWrite;
uploadStateCopy.OnMerged();
uploadStateCopy.Changed += new EventHandler(UploadState_Changed);
uploadState = uploadStateCopy;
}
return(uploadState);
}
public static void Merge(UploadState uploadState, UploadState storedUploadState)
{
if (uploadState == storedUploadState)
return;
if (storedUploadState != null)
{
UploadState uploadStateAtLastMerge = uploadState.UploadStateAtLastMerge;
if (uploadStateAtLastMerge == null)
uploadStateAtLastMerge = new UploadState(uploadState.PostBackID);
uploadState.IsMerging = true;
uploadState.BytesRead
= storedUploadState.BytesRead + (uploadState.BytesRead - uploadStateAtLastMerge.BytesRead);
uploadState.BytesTotal
= storedUploadState.BytesTotal + (uploadState.BytesTotal - uploadStateAtLastMerge.BytesTotal);
uploadState.FileBytesRead
= storedUploadState.FileBytesRead + (uploadState.FileBytesRead
- uploadStateAtLastMerge.FileBytesRead);
if (uploadState.Failure == null)
uploadState.Failure = storedUploadState.Failure;
if (uploadState.Rejection == null)
uploadState.Rejection = storedUploadState.Rejection;
if (uploadState.Files.Count < storedUploadState.Files.Count)
{
uploadState._Files = storedUploadState._Files;
}
if (uploadState.MultiRequestObject == null)
uploadState.MultiRequestObject = storedUploadState.MultiRequestObject;
if (uploadState.ProcessingStateDict == null || uploadState.ProcessingStateDict.Count == 0)
uploadState._ProcessingStateDict = storedUploadState._ProcessingStateDict;
if (uploadState.Status < storedUploadState.Status)
uploadState.Status = storedUploadState.Status;
}
uploadState.OnMerged();
uploadState.IsMerging = false;
}
/// <summary>
/// Merges two <see cref="UploadState"/> objects.
/// </summary>
/// <param name="uploadState">
/// The "local" <see cref="UploadState"/> object to merge, and the object that should contain the result
/// of the merge.
/// </param>
/// <param name="storedUploadState">
/// The stored <see cref="UploadState"/> object to merge, which will be left unchanged.
/// </param>
public static void Merge(UploadState uploadState, UploadState storedUploadState)
{
if (uploadState == storedUploadState)
{
uploadState.IsMerging = true;
uploadState.OnMerged();
uploadState.IsMerging = false;
return;
}
if (storedUploadState != null)
{
UploadState uploadStateAtLastMerge = uploadState.UploadStateAtLastMerge;
if (uploadStateAtLastMerge == null)
{
uploadStateAtLastMerge = new UploadState(uploadState.PostBackID);
}
uploadState.IsMerging = true;
if (uploadState.Status < storedUploadState.Status)
{
uploadState.Status = storedUploadState.Status;
}
if (uploadState.BytesRead - uploadStateAtLastMerge.BytesRead + storedUploadState.BytesRead > uploadState.BytesTotal)
{
if (log.IsDebugEnabled)
{
log.Debug("Too many bytes read");
}
}
uploadState.BytesRead
= storedUploadState.BytesRead + (uploadState.BytesRead - uploadStateAtLastMerge.BytesRead);
uploadState.BytesTotal
= storedUploadState.BytesTotal + (uploadState.BytesTotal - uploadStateAtLastMerge.BytesTotal);
uploadState.FileBytesRead
= storedUploadState.FileBytesRead + (uploadState.FileBytesRead
- uploadStateAtLastMerge.FileBytesRead);
if (uploadState.Failure == null)
{
uploadState.Failure = storedUploadState.Failure;
}
if (uploadState.Rejection == null)
{
uploadState.Rejection = storedUploadState.Rejection;
}
if (uploadState.Files.Count < storedUploadState.Files.Count)
{
uploadState._Files = storedUploadState._Files;
}
if (uploadState.MultiRequestObject == null)
{
uploadState.MultiRequestObject = storedUploadState.MultiRequestObject;
}
if (!uploadState.IsMultiRequest && storedUploadState.IsMultiRequest)
{
uploadState.IsMultiRequest = storedUploadState.IsMultiRequest;
}
if (uploadState.ProcessingStateDict == null || uploadState.ProcessingStateDict.Count == 0)
{
uploadState._ProcessingStateDict = storedUploadState._ProcessingStateDict;
}
}
uploadState.OnMerged();
uploadState.IsMerging = false;
}