ERROR riot :: cyclic IRI mapping

[Laura Morales]

I was looking at this draft [1] about standardizing a "graph" URI. A suggested 
format would be

<graph:name:ec654ec1-7f8f-11e3-ae96-b385f4bc450c>

I tried to define a prefix like this

PREFIX graph: <graph:name:>

such that I could use

graph:ec654ec1-7f8f-11e3-ae96-b385f4bc450c

but this is causing problems with JSON-LD. The error is

ERROR riot                 :: cyclic IRI mapping: graph

A simple way to reproduce the error is with this JSON-LD file:

{
  "@graph" : [ ],
  "@context" : {
    "graph" : "graph:name:"
  }
}

$ riot --syntax jsonld --validate test.json 
ERROR riot                 :: cyclic IRI mapping: graph

Shouldn't the parser recognize that "graph:name:" is an absolute URI? I don't 
understand why this would be ambiguous. Looks like it's treating "graph:" as a 
prefix but it's actually a URI scheme.





[1] 
https://s3.amazonaws.com/artifacts.opencypher.org/website/ocig3/oCIG3+-+Draft+graph+URI+Scheme+Specification+0.3.pdf