Can rid #0:0 ever exist? Can I assume this to be null RID?

[Chris Waldron]

Can the rid #0:0 ever exist?  Can I assume rid #0:0 to be "null" for the purpose of defining RIDs?

Cheers,

Chris.

[Chris Waldron]

The reason I asked this question is that the C# driver uses (-1, -1) as the default RID.  I wanted to rework the C# driver to make the Orid a struct rather than a class.  In C# a struct is a value type and is never null with the values defaulted to null or zero.  Thus the default Orid is (0,0).  I wanted to know if that would break anything.  However after making the proper changes and running the unit tests, I was able to achieve the same unit tests outcomes thus verify that I can use #0:0 as the empty or null rid.

Cheers,

Chris

[Luca Garulli]

Actually record #0:0 contains the database metadata. A Null RID is #-1:-1.

Best Regards,

Founder & CEO

OrientDB

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[Chris Waldron]

I understand this is how it has always been and probably won't be modified as it would be a breaking change but #0:0 really should be the Null RID.  Using #0;0 as Null RID would enable the use of value types. 

Cheers,

Chris.