Re: [RavenDB] Storing byte array as a part of the document

[Egor Shamanaev]

Hi 

You can convert the byte[] and store it as string

var bytesAsString = Encoding.UTF8.GetString(Data);

On Thu, Feb 11, 2021 at 2:08 PM Arash Sabet <arash...@umplify.com> wrote:

I have a simple object with a byte array as one of its properties. Example:

public class MyObject

{

     public string Id{ get; set; }

     public string Name { get; set; }

     public byte[] Data { get; set; }

}

When trying to store this object, all properties appear in the document but "Data" which appears to be null in RavenDB. What's the right approach to get it saved properly?

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[Arash Sabet]

Raven DB already does that automatically without me having to converting the byte array string. The issue is that when that byte array is read back from the RavenDB and plugging into X509Certificate2(byte[]  rawData  , string password) constructor, that contractor fails after due to the following exception. Is it possible that RavenDB does not store byte arrays properly? If not what's the solution?!

Cannot find the requested object.

   at Internal.Cryptography.Pal.CertificatePal.FromBlobOrFile(Byte[] rawData, String fileName, SafePasswordHandle password, X509KeyStorageFlags keyStorageFlags)

   at System.Security.Cryptography.X509Certificates.X509Certificate..ctor(Byte[] rawData, String password, X509KeyStorageFlags keyStorageFlags)

   at System.Security.Cryptography.X509Certificates.X509Certificate2..ctor(Byte[] rawData, String password)

 

[Oren Eini (Ayende Rahien)]

RavenDB stores byte arrays just fine, here is an example test that shows how:

https://github.com/ravendb/ravendb/blob/c512fb46d50385be2250d39881157738c5bb9361/test/SlowTests/Client/Subscriptions/RavenDB-8831.cs#L75

Can you send us a way to reproduce this issue?

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[Oren Eini (Ayende Rahien)]

As an aside, for large binary data ( and certificate is usually several kb, so might fit), you may want to store the data as an attachment, but that isn't related to storing byte[]

[Arash Sabet]

I will share a piece of code on Tuesday.

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[Arash Sabet]

We tried attachments but it never worked either! I already shared a private repo with Grisha. I was told by Griash that I will be communicated something this week.

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[Arash Sabet]

@Oren just wondering, does the private repo that I shared with Grisha the other day suffice for investigation?

[Oren Eini (Ayende Rahien)]

The issue was a call to Read() that wasn't in a loop.

Read() is allowed to return partial results (basically, whatever it has in the buffer).

The code assumes that a single Read() call will get the entire data, but that isn't the case. 

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