Re: JSON Profile Issues (was Re: [xacml] Thursday Meeting)

Regarding the following

The examples show instances where what is described as an array in the
text is shown instead as a single value (noting that an object is a JSON
value). I think it would be useful to make a statement somewhere early in
the profile that an array with a single JSON value MAY, or MUST if that is
your intent, be encoded directly as that value rather than as an array
of one value (although the profile would be easier to implement if an
array is always an array, even if it has only one value).

Section 5.2.5: I found the wording "It is simply an array of ..." misleading,
suggesting something like this:

Obligations:[{
Id:"urn:oasis:names:tc:xacml:3.0:ipc:obligation:encrypt"
},
{
Id:"urn:oasis:names:tc:xacml:3.0:ipc:obligation:marking",
AttributeAssignment:{
AttributeId:"urn:oasis:names:tc:xacml:3.0:example:attribute:text",
DataType:"http://www.w3.org/2001/XMLSchema#string"
}
}]

rather than this:

Obligations:{
ObligationsOrAdvice:[{
Id:"urn:oasis:names:tc:xacml:3.0:ipc:obligation:encrypt"
},
{
Id:"urn:oasis:names:tc:xacml:3.0:ipc:obligation:marking",
AttributeAssignment:{
AttributeId:"urn:oasis:names:tc:xacml:3.0:example:attribute:text",
DataType:"http://www.w3.org/2001/XMLSchema#string"
}
}]
}

Assuming the latter is correct, then it would be better to say "It simply
contains an array of ...".

I don't actually see the point in a double-nesting.

So I would rather have "Obligations": [{"Id":"",.......],{}]

rather than "Obligations": {"ObligationOrAdvice" : [{"Id":"",.......],{}] }

It also applies to Advice as you pointed out and to Response / Result.

Am I missing a JSON subtlety here?

xacml message