Yes, and you could add LIMIT 1 to the end of the WHERE block to make
sure it only ever returns at most one value. The forEach then serves as
a mechanism to bind all variables from the SELECT clause.
Holger
On 8/21/14, 5:22 AM, Scott Henninger wrote:
Dejan; You would need to use the ui:forEach to invoke the result set
processing, so the following should work:
<ui:forEach ui:resultSet="{#
SELECT ?some_value ?something_else
WHERE {
?argument_variable rdfs:label ?some_value .
?argument_variable prefix:somethingElse ?something_else .
} }">
<swon:Object>
<swon:Value arg:name="Name" arg:value="{= ?some_value }"/>
<swon:Value arg:name="Other" arg:value="{= ?something_else }"/>
</swon:Object>
</ui:forEach>
-- Scott
On 8/20/2014, 9:42 AM, Dejan Veselinovic wrote:
The technique Mr. Knublauch suggested gives me an empty JSON object.
So far, the only method that has worked is providing a SPARQL query
within the arg:value property of the swon:Value element as such:
<swon:Object>
<swon:Value arg:name="Name" arg:value="{# SELECT ?some_value
WHERE { ?argument_variable rdfs:label ?some_value . } }" />
<swon:Value arg:name="Other" arg:value="{# SELECT ?something_else
WHERE { ?argument_variable prefix:somethingElse ?something_else . } }" />
</swon:Object>
This will produce the following output: { 'Name': 'Value_One',
'Other': 'Value_Two' }. I was hoping to be able to do something like
the following:
<someElement someAttribute="{# SELECT ?some_value ?something_else
WHERE { ?argument_variable rdfs:label ?some_value .
?argument_variable prefix:somethingElse ?something_else . } }">
<swon:Object>
<swon:Value arg:name="Name" arg:value="{= ?some_value }" />
<swon:Value arg:name="Other" arg:value="{= ?something_else }" />
</swon:Object>
</someElement>
to get the output produced above. Is this even possible?
On Tuesday, August 19, 2014 7:56:49 PM UTC-4, Holger Knublauch wrote:
On 8/20/2014 5:31, Dejan Veselinovic wrote:
> For clarification, I am currently building this functionality
within a
> SPARQL Web Page and have read through
http://uispin.org/swon.html and
> http://uispin.org/ui.html. I tried defining a ui:resultSet
property
> within a swon:Object element but that property is not allowed
within
> that element.
Why not? You can do
<swon:Object>
<ui:forEach ui:resultSet="{# ... }">
<swon:Value ...
</ui:forEach>
</swon:Object>
> I know that property is allowed within the ui:forEach element
but I am
> only expecting a single JSON object, not an array of JSON objects
> which seems to be the use for the ui:forEach element.
swon:RSObject
> does most of what I want (returning a single JSON object from a
result
> set) but the problem here is I can't define a Name-Value pair (a
> swon:Value element) for that element as the names are taken
directly
> from the result set. Ideally, what I am looking for is an element
> where I can define a result set from a SPARQL query that will only
> return a single JSON object (like the swom:RSObject element)
and then
> define Name-Value pairs (akin to the swon:Value element) for that
> result set. Does such an element exist, what is it and where
did I
> miss it?
See above. If this does not help, please send us an example
SPARQL query
and the output that you would like to produce.
Thanks
Holger
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