On the server that hosts your namespace, can't you set up a rewrite that
generates
http://mytopbraid...:8083/tbl/sparql?query=DESCRIBE%20<XY>
where you replace XY with the URL-encoded URI of the resource that was
requested? See e.g.
https://httpd.apache.org/docs/2.4/rewrite/remapping.html
but this sounds like a problem someone must have solved before. Given
that you plan to call a SWP service, how do you currently redirect the
URLs to invoke said service?
You cannot use DESCRIBE in ui:TurtleService and I am not aware of a
magic property that would get all depending triples of the concise
bounded description. SPARQL is not good at recursion.
Holger
On 2021-03-18 10:11 am, Steve Ray wrote:
Interesting. The DESCRIBE query sounds intriguing, but I need to
create the .ttl files so that when somebody types
http://qudt.org/schema/qudt/Unit <http://qudt.org/schema/qudt/Unit>
...it resolves to the Turtle code, without using a SPARQL endpoint.
Just like if you type http://qudt.org/vocab/unit/A
<http://qudt.org/vocab/unit/A> you get the definition of the Ampere.
(Content negotiation will give you either html or ttl depending on the
header, so a browser yields html).
Can I use DESCRIBE inside a ui:TurtleServices web service? I tried
with ui:update, but that expects an INSERT or DELETE. Am I making this
more complicated than it needs to be?
Steve
On Wed, Mar 17, 2021 at 4:08 PM Holger Knublauch
<[email protected] <mailto:[email protected]>> wrote:
Hi Steve,
you could just use SPARQL DESCRIBE queries, which will compute the
graph for a resource including its depending blank nodes, e.g.
DESCRIBE <http://topquadrant.com/ns/examples/geography#Country>
<http://topquadrant.com/ns/examples/geography#Country>
via the SPARQL endpoint.
Holger
On 2021-03-18 9:01 am, Steve Ray wrote:
Hi,
I'm using SWP to generate a bunch of .ttl files that will be
available to the LinkedData community for resolving class
definitions. I'm hoping to use the code below that works fine for
our instance data, but this code doesn't do the right thing when
there are bnodes (such as restriction classes).
This is written as a ui prototype that is a subClass of
ui:TurtleServices.
*Is there some setting to have it also serialize the bnodes*?
Here's the ui:prototype code:
<*ui:group* let:*extension*=".ttl"
let:*myGraphU*="*{=* ui:graphWithImports(*IRI*(*?graph*)) *}*"
let:*myInstance*="*{=**IRI*(*?instance*) *}*"
let:*newPath*="*{=* *CONCAT*("/generatedFiles/",
xsd:string(*?folder*), "/") *}*">
<*ui:debug*>
*<span>*Inside VersionlessIndividual. Value of ?newPath is
*{=*?newPath*}**</span>*
</ui:debug>
<*ui:dumpScope* ui:message="AAA:VersionlessIndividual, newPath=
*{=* ?newPath *}*"/>
<*ui:group* let:*localName*="*{=* afn:localname(?myInstance) *}*">
<*ui:group* let:*newFile*="*{=**CONCAT*(?newPath, ?localName,
?extension) *}*">
<*ui:dumpResultSet* ui:message="AAA:VersionlessGraph, newUnit= "
ui:resultSet="*{=* *?instance* *}*"/>
<*ui:setContext* ui:silentTransactions="true">
<*ui:setContext* ui:queryGraph="ui:tempGraph">
/<!-- Clear out the working graph-->/
<*ui:update* ui:updateQuery="*{!*
*DELETE* {
*GRAPH* ui:tempGraph {
?s ?p ?o .
} .
}
*WHERE* {
?s ?p ?o .
} *}*"/>
<*ui:update* ui:updateQuery="*{!*
*INSERT* {
*GRAPH* ui:tempGraph {
?myInstance ?p ?o .
} .
}
*WHERE* {
*GRAPH* ?myGraphU {
?myInstance ?p ?o .
} .
} *}*"/>
<*ui:return*/>
</ui:setContext>
</ui:setContext>
</ui:group>
</ui:group>
</ui:group>
...which produces the following file:
image.png
I want all the stuff inside the [] to show up as well!
Steve
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