Empty file import throws notsupported exception

[VargaJoe]

Environment:

• sensenet Services 7.3.1 + WebPages
• default sql db
• no external blob provider
• no blob configuration
• FS is not installed

Files are imported correctly using SnAdmin, except if they have 0 byte length.

07:28:01.4953	NotSupportedException: Specified method is not supported.
07:28:01.5032	   at SenseNet.ContentRepository.Storage.Data.SqlClient.BuiltInBlobProvider.GetStreamForWrite(BlobStorageContext context)
   at SenseNet.ContentRepository.Storage.Data.SqlClient.MsSqlBlobMetaDataProvider.UpdateBinaryProperty(IBlobProvider blobProvider, BinaryDataValue value)
   at SenseNet.ContentRepository.Storage.Data.SqlClient.SqlNodeWriter.UpdateBinaryProperty(BinaryDataValue value) in E:\BuildAgent\_work\63\s\src\Storage\Data\SqlClient\SqlNodeWriter.cs:line 383
   at SenseNet.ContentRepository.Storage.Data.DataProvider.SaveNodeProperties(NodeData nodeData, SavingAlgorithm savingAlgorithm, INodeWriter writer, Boolean isNewNode) in E:\BuildAgent\_work\63\s\src\Storage\Data\DataProvider.cs:line 224
   at SenseNet.ContentRepository.Storage.Data.DataProvider.SaveNodeData(NodeData nodeData, NodeSaveSettings settings, Int32& lastMajorVersionId, Int32& lastMinorVersionId) in E:\BuildAgent\_work\63\s\src\Storage\Data\DataProvider.cs:line 139
   at SenseNet.ContentRepository.Storage.DataBackingStore.SaveNodeDataTransactional(Node node, NodeSaveSettings settings, IIndexPopulator populator, String originalPath, String newPath) in E:\BuildAgent\_work\63\s\src\Storage\DataBackingStore.cs:line 614
   at SenseNet.ContentRepository.Storage.DataBackingStore.SaveNodeData(Node node, NodeSaveSettings settings, IIndexPopulator populator, String originalPath, String newPath) in E:\BuildAgent\_work\63\s\src\Storage\DataBackingStore.cs:line 453
   at SenseNet.ContentRepository.Storage.Node.Save(NodeSaveSettings settings) in E:\BuildAgent\_work\63\s\src\Storage\Node.cs:line 2643
   at SenseNet.ContentRepository.GenericContent.Save(NodeSaveSettings settings) in E:\BuildAgent\_work\63\s\src\ContentRepository\GenericContent.cs:line 1696
   at SenseNet.ContentRepository.SavingAction.Execute() in E:\BuildAgent\_work\63\s\src\ContentRepository\SavingAction.cs:line 421
   at SenseNet.ContentRepository.GenericContent.Save(SavingMode mode) in E:\BuildAgent\_work\63\s\src\ContentRepository\GenericContent.cs:line 1684
   at SenseNet.ContentRepository.Content.Save(Boolean validOnly, SavingMode mode) in E:\BuildAgent\_work\63\s\src\ContentRepository\Content.cs:line 1018
   at SenseNet.ContentRepository.Content.Save(Boolean validOnly) in E:\BuildAgent\_work\63\s\src\ContentRepository\Content.cs:line 979
   at SenseNet.ContentRepository.Content.ImportFieldData(ImportContext context, Boolean saveContent) in E:\BuildAgent\_work\63\s\src\ContentRepository\Content.cs:line 1660
   at SenseNet.Packaging.Steps.ImportBase.ContentInfo.SetMetadata(Content content, String currentDirectory, Boolean isNewContent, Boolean updateReferences) in E:\BuildAgent\_work\63\s\src\ContentRepository\Packaging\Steps\ImportBase.cs:line 241
   at SenseNet.Packaging.Steps.ImportBase.ImporterClass.TreeWalker(String path, Boolean pathIsFile, Node folder, String indent, Boolean aspects, Boolean settings) in E:\BuildAgent\_work\63\s\src\ContentRepository\Packaging\Steps\ImportBase.cs:line 877

Exception is thrown here:

sensenet/src/BlobStorage/Data/SqlClient/BuiltInBlobProvider.cs

Line 235 in 7c18830

throw new NotSupportedException();

Caller:

sensenet/src/BlobStorage/Data/SqlClient/MsSqlBlobMetaDataProvider.cs

Line 362 in 7c18830

using (var stream = blobProvider.GetStreamForWrite(ctx))