Re: [SMW-devel] Storing empty properties

2014-08-27 Thread Stephan Gambke
Hi John, thanks for the link. On 27 August 2014 21:34, John McClure wrote: > Without a specified value, then the object is unspecified > ... so the model you wonder about becomes just "subject-predicate" > ... thereby breaking the predominant model we live with No, you confuse the empty (i.e.

Re: [SMW-devel] Storing empty properties

2014-08-27 Thread John McClure
Triple = "subject-predicate-object" all are required Without a specified value, then the object is unspecified ... so the model you wonder about becomes just "subject-predicate" ... thereby breaking the predominant model we live with I suppose http://www.w3.org/TR/rdf11-mt/ can explain in more

Re: [SMW-devel] Storing empty properties

2014-08-27 Thread Stephan Gambke
Thanks, James. That answers the first question: It has been a conscious design decision, i.e. it's a feature. On 27 August 2014 20:32, James HK wrote: > Hi, > > [0] prevents text/string values of being empty. > > [0] > https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/master/includes/

Re: [SMW-devel] Storing empty properties

2014-08-27 Thread James HK
Hi, [0] prevents text/string values of being empty. [0] https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/master/includes/datavalues/SMW_DV_String.php#L16 PS: Haven't look at the issue itself but [0] should explain the current codified behaviour. Cheers On 8/28/14, Stephan Gambke w

Re: [SMW-devel] Storing empty properties

2014-08-27 Thread Stephan Gambke
On 2014-08-27 19:20, John McClure wrote: > In the world of triples, you're asking about something less > Neither a feature nor a bug -- it's an ontological reality I do not understand that statement. Could you elaborate? ---

Re: [SMW-devel] Storing empty properties

2014-08-27 Thread Stephan Gambke
On 2014-08-27 18:04, Nathan Douglas wrote: > IMHO being able to make a relationship between something and nothing > isn't terribly useful. If you have a page about goats, you don't have > to specify that its capital city is nil, etc. I do not want to specify nil, I want to specify a string of len

Re: [SMW-devel] Storing empty properties

2014-08-27 Thread John McClure
In the world of triples, you're asking about something less Neither a feature nor a bug -- it's an ontological reality On 8/27/2014 6:15 AM, Stephan Gambke wrote: > It is not possible to store empty strings/texts, like this: > [[Foo::]] > {{#set:Foo|}} > > Bug or feature? And if feature, what's th