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Posted to users@jena.apache.org by Cindy A McMullen <ci...@oracle.com> on 2014/05/14 22:15:00 UTC
DELETE DATA
Hi,
I'm using Jena 11.2.1. My graph has a triple that looks like this:
{s=http://www.oracle.com/osn/osn.owl#User100, p=http://www.oracle.com/osn/osn.owl#name, o=Cindy^^http://www.w3.org/2001/XMLSchema#string}
I want to use DELETE DATA, and my update stanza looks like this:
PREFIX w: <http://www.foo.com/osn/osn.owl#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
DELETE DATA { w:User100 w:name "Cindy" . }
That triple is not removed from the graph. So that's the first problem.
The next problem is that when I insert data into the graph, the XSD type information is lost:
PREFIX w: <http://www.foo.com/osn/osn.owl#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
INSERT DATA { w:User100 w:name "Charles" . }
{s=http://www.oracle.com/osn/osn.owl#User100, p=http://www.oracle.com/osn/osn.owl#name, o=Charles}
When trying something like this:
// Throws parse errors
DELETE DATA { w:User100 w:name Cindy^^http://www.w3.org/2001/XMLSchema#string . }
How can I get INSERT DATA and DELETE DATA to work with literals?
Thanks -
-- Cindy
Re: DELETE DATA
Posted by Andy Seaborne <an...@apache.org>.
On 14/05/14 21:49, Cindy A McMullen wrote:
> Correction inline in bold below:
Not in plain text :-)
>
> On May 14, 2014, at 2:15 PM, Cindy A McMullen wrote:
>
>> Hi,
>>
>> I'm using Jena 11.2.1. My graph has a triple that looks like this:
>>
>> {s=http://www.oracle.com/osn/osn.owl#User100, p=http://www.oracle.com/osn/osn.owl#name, o=Cindy^^http://www.w3.org/2001/XMLSchema#string}
>>
>> I want to use DELETE DATA, and my update stanza looks like this:
>>
>> PREFIX w: <http://www.foo.com/osn/osn.owl#>
>> PREFIX w: <http://www.oracle.com/osn/osn.owl#>
>> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
>> DELETE DATA { w:User100 w:name "Cindy" . }
>>
>> That triple is not removed from the graph. So that's the first problem.
Because
"Cindy" != "Cindy"^^xsd:string
as RDF terms.
In RDF 1.1
"Cindy" and "Cindy"^^xsd:string are the same thing (not even equal -
they are two ways to write the same thing).
But to make that change, every persistent database needs reloading which
is a major change and needs careful migration. It is not yet done so
for this point (and the related rdf:langString) only it's RDF 1.0 semantics.
>> The next problem is that when I insert data into the graph, the XSD type information is lost:
>> PREFIX w: <http://www.foo.com/osn/osn.owl#>
>> PREFIX w: <http://www.oracle.com/osn/osn.owl#>
>> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
>> INSERT DATA { w:User100 w:name "Charles" . }
>>
>> {s=http://www.oracle.com/osn/osn.owl#User100, p=http://www.oracle.com/osn/osn.owl#name, o=Charles}
>>
>> When trying something like this:
>>
>> // Throws parse errors
>> DELETE DATA { w:User100 w:name Cindy^^http://www.w3.org/2001/XMLSchema#string . }
Full syntax is:
"Cindy"^^<http://www.w3.org/2001/XMLSchema#string>
>>
>> How can I get INSERT DATA and DELETE DATA to work with literals?
>>
>> Thanks -
>>
>> -- Cindy
>>
>>
>>
>
>
Re: DELETE DATA
Posted by Cindy A McMullen <ci...@oracle.com>.
Problem solved. The literals need to be constructed as something like "Cindy"^^xsd:string, or "10"^^xsd:int
On May 14, 2014, at 2:49 PM, Cindy A McMullen wrote:
> Correction inline in bold below:
>
> On May 14, 2014, at 2:15 PM, Cindy A McMullen wrote:
>
>> Hi,
>>
>> I'm using Jena 11.2.1. My graph has a triple that looks like this:
>>
>> {s=http://www.oracle.com/osn/osn.owl#User100, p=http://www.oracle.com/osn/osn.owl#name, o=Cindy^^http://www.w3.org/2001/XMLSchema#string}
>>
>> I want to use DELETE DATA, and my update stanza looks like this:
>>
>> PREFIX w: <http://www.foo.com/osn/osn.owl#>
>> PREFIX w: <http://www.oracle.com/osn/osn.owl#>
>> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
>> DELETE DATA { w:User100 w:name "Cindy" . }
>>
>> That triple is not removed from the graph. So that's the first problem.
>>
>> The next problem is that when I insert data into the graph, the XSD type information is lost:
>> PREFIX w: <http://www.foo.com/osn/osn.owl#>
>> PREFIX w: <http://www.oracle.com/osn/osn.owl#>
>> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
>> INSERT DATA { w:User100 w:name "Charles" . }
>>
>> {s=http://www.oracle.com/osn/osn.owl#User100, p=http://www.oracle.com/osn/osn.owl#name, o=Charles}
>>
>> When trying something like this:
>>
>> // Throws parse errors
>> DELETE DATA { w:User100 w:name Cindy^^http://www.w3.org/2001/XMLSchema#string . }
>>
>> How can I get INSERT DATA and DELETE DATA to work with literals?
>>
>> Thanks -
>>
>> -- Cindy
>>
>>
>>
>
Re: DELETE DATA
Posted by Cindy A McMullen <ci...@oracle.com>.
Correction inline in bold below:
On May 14, 2014, at 2:15 PM, Cindy A McMullen wrote:
> Hi,
>
> I'm using Jena 11.2.1. My graph has a triple that looks like this:
>
> {s=http://www.oracle.com/osn/osn.owl#User100, p=http://www.oracle.com/osn/osn.owl#name, o=Cindy^^http://www.w3.org/2001/XMLSchema#string}
>
> I want to use DELETE DATA, and my update stanza looks like this:
>
> PREFIX w: <http://www.foo.com/osn/osn.owl#>
> PREFIX w: <http://www.oracle.com/osn/osn.owl#>
> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
> DELETE DATA { w:User100 w:name "Cindy" . }
>
> That triple is not removed from the graph. So that's the first problem.
>
> The next problem is that when I insert data into the graph, the XSD type information is lost:
> PREFIX w: <http://www.foo.com/osn/osn.owl#>
> PREFIX w: <http://www.oracle.com/osn/osn.owl#>
> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
> INSERT DATA { w:User100 w:name "Charles" . }
>
> {s=http://www.oracle.com/osn/osn.owl#User100, p=http://www.oracle.com/osn/osn.owl#name, o=Charles}
>
> When trying something like this:
>
> // Throws parse errors
> DELETE DATA { w:User100 w:name Cindy^^http://www.w3.org/2001/XMLSchema#string . }
>
> How can I get INSERT DATA and DELETE DATA to work with literals?
>
> Thanks -
>
> -- Cindy
>
>
>