URI Reference questions

I'm referring to RDF Concepts [1].

1) RDF describes URI references - not URI strings themselves - in anticipation
of IRIs  (AKA a 'URIRef')  URIRefs are always encoded in UTF-8 too.  Correct?

2) My main question concerns converting a URIRef into a URI.  Say we have the
URIRef:

<data:,Hello, World>

Is that legal?  Would that be converted into the URI:

<data:,Hello%2C%20World>

Since the comma is illegal in the URI after the first one?

3) If there was an ambigious situation, how would it be represented as an
URIRef?  For example take the URI (yes, it is an unusual case where the name
contains a slash - it is just an example):

<http://example.com/name%2Fslash/>

Would that be converted to the URIRef:

<http://example.com/name/slash/>

(I don't think so).  But wouldn't the URIRef:

<http://example.com/name%2Fslash/>

be converted to the URI:

<http://example.com/name%252Fslash/>

I'm a little uncertain of the answers.  I have another question concerning
URIRefs for URIRefs, but I need these questions clarified first.

-- Jimmy Cerra

[1] http://www.w3.org/TR/rdf-concepts/#section-Graph-URIref



		
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