In Turtle
writing
123
is a short form for
"123"^^xsd:integer.
So they are typed, just written in a special way.
Andy
PS Looks like you are storing your data in TDB.
xsd:int became xsd:integer (TDB1 does not preserve the derived datatype
details)
On 27/12/17 19:34, John James wrote:
I was playing around with some queries I run elsewhere and came up with
what struck me as an oddity. I am inserting triples as integers. When
running a SELECT query and retrieving them as JSON results, I get back
literals with the integer type. When I run a CONSTRUCT query and bring
back the triples, the datatype on the objects are not explicitly stated.
Is there an optional reason for this that I've just not run into elsewhere?
John
[john] bin/s-update --verbose
--service=http://localhost:3030/stress/update --file=update1.sparql
update1.sparql:
prefix myjunk:<http://testing.com/triples/>
prefix xs:<http://www.w3.org/2001/XMLSchema#>
insert data {
graph myjunk:TestIds {
myjunk:Test_44522 myjunk:TestId "44522"^^xs:int .
myjunk:Test_2799404 myjunk:TestId "2799404"^^xs:int .
myjunk:Test_5566 myjunk:TestId "5566"^^xs:int .
myjunk:Test_34892 myjunk:TestId "34892"^^xs:int .
myjunk:Test_444 myjunk:TestId "444"^^xs:int .
myjunk:Test_274034549 myjunk:TestId "274034549"^^xs:int .
myjunk:Test_43589345 myjunk:TestId "43589345"^^xs:int .
}
}
SPARQL-Updatehttp://localhost:3030/stress/update
POSThttp://localhost:3030/stress/update
User-Agent: SOH/Fuseki 0.0.2
Content-Type: application/sparql-update
204 No Content
Date: Wed, 27 Dec 2017 19:13:15 GMT
Fuseki-Request-Id: 26
Server: Fuseki (2.3.1)
[john] bin/s-query --verbose
--service=http://localhost:3030/stress/query --file=query2.sparql --post
query2.sparql:
prefix myjunk:<http://testing.com/triples/>
prefix xs:<http://www.w3.org/2001/XMLSchema#>
select ?s ?p ?o
where {
graph myjunk:TestIds {
?s ?p ?o .
}
}
SPARQLhttp://localhost:3030/stress/query
POSThttp://localhost:3030/stress/query
User-Agent: SOH/Fuseki 0.0.2
Accept: application/sparql-results+json ,
application/sparql-results+xml;q=0.9 , text/turtle;charset=utf-8 ,
application/n-triples;q=0.9 , application/rdf+xml;q=0.8 ,
application/ld+json;q=0.5 , */*;q=0.1
Content-Type: application/x-www-form-urlencoded
Content-Length: 250
200 OK
Date: Wed, 27 Dec 2017 19:13:20 GMT
Fuseki-Request-Id: 27
Server: Fuseki (2.3.1)
Cache-Control: must-revalidate,no-cache,no-store
Pragma: no-cache
Content-Type: application/sparql-results+json; charset=utf-8
Transfer-Encoding: chunked
{
"head": {
"vars": [ "s" , "p" , "o" ]
} ,
"results": {
"bindings": [
{
"s": { "type": "uri" ,
"value":"http://testing.com/triples/Test_44522" } ,
"p": { "type": "uri" ,
"value":"http://testing.com/triples/TestId" } ,
"o": { "datatype":"http://www.w3.org/2001/XMLSchema#integer" ,
"type": "typed-literal" , "value": "44522" }
} ,
{
"s": { "type": "uri" ,
"value":"http://testing.com/triples/Test_2799404" } ,
"p": { "type": "uri" ,
"value":"http://testing.com/triples/TestId" } ,
"o": { "datatype":"http://www.w3.org/2001/XMLSchema#integer" ,
"type": "typed-literal" , "value": "2799404" }
} ,
{
"s": { "type": "uri" ,
"value":"http://testing.com/triples/Test_5566" } ,
"p": { "type": "uri" ,
"value":"http://testing.com/triples/TestId" } ,
"o": { "datatype":"http://www.w3.org/2001/XMLSchema#integer" ,
"type": "typed-literal" , "value": "5566" }
} ,
{
"s": { "type": "uri" ,
"value":"http://testing.com/triples/Test_34892" } ,
"p": { "type": "uri" ,
"value":"http://testing.com/triples/TestId" } ,
"o": { "datatype":"http://www.w3.org/2001/XMLSchema#integer" ,
"type": "typed-literal" , "value": "34892" }
} ,
{
"s": { "type": "uri" ,
"value":"http://testing.com/triples/Test_444" } ,
"p": { "type": "uri" ,
"value":"http://testing.com/triples/TestId" } ,
"o": { "datatype":"http://www.w3.org/2001/XMLSchema#integer" ,
"type": "typed-literal" , "value": "444" }
} ,
{
"s": { "type": "uri" ,
"value":"http://testing.com/triples/Test_274034549" } ,
"p": { "type": "uri" ,
"value":"http://testing.com/triples/TestId" } ,
"o": { "datatype":"http://www.w3.org/2001/XMLSchema#integer" ,
"type": "typed-literal" , "value": "274034549" }
} ,
{
"s": { "type": "uri" ,
"value":"http://testing.com/triples/Test_43589345" } ,
"p": { "type": "uri" ,
"value":"http://testing.com/triples/TestId" } ,
"o": { "datatype":"http://www.w3.org/2001/XMLSchema#integer" ,
"type": "typed-literal" , "value": "43589345" }
}
]
}
}
[john] bin/s-query --verbose
--service=http://localhost:3030/stress/query --file=query3.sparql --post
query3.sparql:
prefix myjunk:<http://testing.com/triples/>
prefix xs:<http://www.w3.org/2001/XMLSchema#>
construct {
?s myjunk:TestId ?o .
}
where {
graph myjunk:TestIds {
?s myjunk:TestId ?o .
}
}
SPARQLhttp://localhost:3030/stress/query
POSThttp://localhost:3030/stress/query
User-Agent: SOH/Fuseki 0.0.2
Accept: application/sparql-results+json ,
application/sparql-results+xml;q=0.9 , text/turtle;charset=utf-8 ,
application/n-triples;q=0.9 , application/rdf+xml;q=0.8 ,
application/ld+json;q=0.5 , */*;q=0.1
Content-Type: application/x-www-form-urlencoded
Content-Length: 290
200 OK
Date: Wed, 27 Dec 2017 19:13:26 GMT
Fuseki-Request-Id: 28
Server: Fuseki (2.3.1)
Cache-Control: must-revalidate,no-cache,no-store
Pragma: no-cache
Content-Type: text/turtle; charset=utf-8
Transfer-Encoding: chunked
<http://testing.com/triples/Test_274034549>
<http://testing.com/triples/TestId>
274034549 .
<http://testing.com/triples/Test_444>
<http://testing.com/triples/TestId>
444 .
<http://testing.com/triples/Test_44522>
<http://testing.com/triples/TestId>
44522 .
<http://testing.com/triples/Test_2799404>
<http://testing.com/triples/TestId>
2799404 .
<http://testing.com/triples/Test_5566>
<http://testing.com/triples/TestId>
5566 .
<http://testing.com/triples/Test_34892>
<http://testing.com/triples/TestId>
34892 .
<http://testing.com/triples/Test_43589345>
<http://testing.com/triples/TestId>
43589345 .
[john]
