/// <summary>
/// Updates an existing binary property value in the database and the blob storage.
/// </summary>
/// <param name="value">Binary data to update.</param>
/// <param name="dataContext">Database accessor object.</param>
/// <returns>A Task that represents the asynchronous operation.</returns>
public async Task UpdateBinaryPropertyAsync(BinaryDataValue value, SnDataContext dataContext)
{
var blobProvider = ProviderSelector.GetProvider(value.Size);
await DataProvider.UpdateBinaryPropertyAsync(blobProvider, value, dataContext);
dataContext.NeedToCleanupFiles = true;
}
/// <summary>
/// Starts a chunked save operation on an existing content. It does not write any binary data
/// to the storage, it only makes prerequisite operations - e.g. allocates a new slot in the storage.
/// </summary>
/// <param name="versionId">Content version id.</param>
/// <param name="propertyTypeId">Binary property type id.</param>
/// <param name="fullSize">Full size (stream length) of the binary value.</param>
/// <param name="cancellationToken">The token to monitor for cancellation requests.</param>
/// <returns>A Task that represents the asynchronous operation containing a token with
/// all the information (db record ids) that identify a single entry in the blob storage.</returns>
public Task <string> StartChunkAsync(int versionId, int propertyTypeId, long fullSize,
CancellationToken cancellationToken)
{
var blobProvider = ProviderSelector.GetProvider(fullSize);
return(DataProvider.StartChunkAsync(blobProvider, versionId, propertyTypeId, fullSize,
cancellationToken));
}
/// <summary>
/// Inserts a new binary record into the metadata database containing a new or an already existing file id,
/// removing the previous record if the content is not new.
/// </summary>
/// <param name="value">Binary data to insert.</param>
/// <param name="versionId">Content version id.</param>
/// <param name="propertyTypeId">Binary property type id.</param>
/// <param name="isNewNode">Whether this value belongs to a new or an existing node.</param>
/// <param name="dataContext">Database accessor object.</param>
/// <returns>A Task that represents the asynchronous operation.</returns>
public Task InsertBinaryPropertyAsync(BinaryDataValue value, int versionId, int propertyTypeId, bool isNewNode, SnDataContext dataContext)
{
var blobProvider = ProviderSelector.GetProvider(value.Size);
if (value.FileId > 0 && value.Stream == null)
{
return(DataProvider.InsertBinaryPropertyWithFileIdAsync(value, versionId, propertyTypeId, isNewNode, dataContext));
}
else
{
return(DataProvider.InsertBinaryPropertyAsync(blobProvider, value, versionId, propertyTypeId, isNewNode, dataContext));
}
}
/// <summary>
/// Gets a provider based on the binary size and the available blob providers in the system.
/// </summary>
/// <param name="fullSize">Full binary length.</param>
public IBlobProvider GetProvider(long fullSize)
{
return(ProviderSelector.GetProvider(fullSize));
}