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Re: [xml-dev] Multiple instances of an attribute Re: [xml-dev]Towards XML 2.0

> A better solution is to use xsd:list datatype :
> <foo value="bar spam"/>
> but that is not known.

reminds me - I was thinking the WG could add an xml:json datatype
which might solve this (but I would hope there would be a better
way to allow JSON-like functionality in an attribute).

----
Stephen D Green



On 10 December 2010 09:03, nicolas debeissat <ndebeiss@gmail.com> wrote:
>
> The treatment of lists is indeed a big issue in XML, misunderstood by lots
> of people.
> Some of them systematically wrap the list into a markup list :
> <foo>
> <valuelist>
>     <value>123</value>
>     <value>456</value>
> </valuelist>
> </foo>
>
> which is incredibly verbose compared to the JSON { "foo": ["bar", "spam"] }
> A better solution is to use xsd:list datatype :
> <foo value="bar spam"/>
> but that is not known. I have seen a REST javadoc generator which uses
> xsd:list for a list of markups...
> There are still critical Axis bugs opened on the serialization of String[]
> values, see https://issues.apache.org/jira/browse/AXIS-2250
> Even without a schema you can get that value "bar spam" and split it, that
> is not XML philosophy, but...
> I agree it would be better not to have to define a schema in order to get
> that list.
>
> Regards
> Nicolas Debeissat
>
> 2010/12/9 Stephen Green <stephengreenubl@gmail.com>
>>
>> Alternatively, why not improve the way XML defines attribute
>> values to include an array of values for the same attribute with
>> various kinds of array, like JSON; arrays, lists without sequence,
>> sequences and vectors - and do so without the need for a
>> schema?
>>
>> ----
>> Stephen D Green
>>
>>
>>
>> On 9 December 2010 15:18, Stephen Green <stephengreenubl@gmail.com> wrote:
>> >>
>> >> The second is perhaps equivalent to  the XML
>> >> <foo>
>> >>  <value>bar</value>
>> >>  <value>spam</value>
>> >> </foo>
>> >>
>> >
>> > So if you can write
>> >
>> > <foo>
>> >  <value>bar</value>
>> >  <value>spam</value>
>> > </foo>
>> >
>> > in XML, why not also allow
>> >
>> > <foo value="bar" value="spam"/>
>> >
>> > ?
>> > It is more succinct, which seems to be one of the JSON selling points.
>> >
>> >
>> >> or even if you use XSD schema with the appropriate type
>> >> <foo>bar spam</foo>
>> >>
>> >
>> > but this requires a schema, which is another of JSON's selling points:
>> > It doesn't.
>> >
>> > ----
>> > Stephen D Green
>> >
>> >
>> >
>> > On 9 December 2010 15:12, David Lee <dlee@calldei.com> wrote:
>> >>
>> >>
>> >> =============='
>> >>> { "foo" : "bar" , "foo" : "spam" }
>> >>>
>> >>> Is legal JSON ?
>> >>
>> >> But the array
>> >>
>> >> { "foo": ["bar", "spam"] }
>> >>
>> >> amounts to the same thing doesn't it?
>> >> ----
>> >> Stephen D Green
>> >> ============================
>> >>
>> >> Not in my mind.  They end up as different internal objects.
>> >>
>> >> The first is an object with 2 named fields, the second is an object
>> >> with one
>> >> named field which is an array of 2 unnamed strings.
>> >> Completely different data, both in syntax and in the internal
>> >> JavaScript
>> >> object form.
>> >> You would access them differently.  They are not equivalent.
>> >>
>> >> The second is perhaps equivalent to  the XML
>> >> <foo>
>> >>  <value>bar</value>
>> >>  <value>spam</value>
>> >> </foo>
>> >>
>> >> or even if you use XSD schema with the appropriate type
>> >> <foo>bar spam</foo>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >
>>
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>
>


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