Thanks for your reply!

Now another related question.  I have a set of related ontologies each residing 
in a separate n3 file.  When I do a DELETE query, it seems that only the 
matching triples in the currently active n3 file get deleted, even though the 
Change History reports that all the matching triples in all the n3 files were 
deleted.  Is this an expected behavior?

Thanks.
Naicong

From: [email protected] [mailto:[email protected]] 
On Behalf Of Holger Knublauch
Sent: Thursday, May 19, 2011 3:21 PM
To: [email protected]
Subject: Re: [topbraid-users] Question about DELETE

Naicong,

yes this is a known buglet. The underlying issue is that in the Jena API, 
Update queries go through a different factory than the queries, and if one of 
them fails then it's hard to guess which one the user is trying to enter - both 
throw parsing exceptions.

Thanks,
Holger


On May 20, 2011, at 7:56 AM, Li, Naicong wrote:


By the way, when you enter a query starting with DELETE, the first message you 
saw on the bottom status bar says: <image001.png>

Which could be misleading.

Naicong

From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Li, Naicong
Sent: Thursday, May 19, 2011 2:51 PM
To: [email protected]<mailto:[email protected]>
Subject: RE: [topbraid-users] Question about DELETE

Thanks!
Naicong

From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Gokhan Soydan
Sent: Thursday, May 19, 2011 2:48 PM
To: [email protected]<mailto:[email protected]>
Subject: Re: [topbraid-users] Question about DELETE

Naicong,

You also have to bind the ?label variable in the WHERE clause. So it should 
look like:
DELETE {
    ?I rdfs:label ?label .
}
WHERE {
   ?I a ZTest:C1 .
   ?l rdfs:label ?label .
}


Gokhan


On 5/19/2011 2:42 PM, Li, Naicong wrote:
Hi,

I have a question about using DELETE in a SPARQL query.  I have a test class 
ZTest:C1, which has an instance ZTest:C1_1, whose rdfs:label = "C1 1".  I 
entered the following query in the SPARQL query window to test deleting the 
triple: ZTest:C1_1 rdfs:label "C1 1" :

DELETE {
    ?I rdfs:label ?label .
}
WHERE {
   ?I a ZTest:C1 .
}

The query passed syntax checking, and executed, but it did not delete the 
rdfs:label triple for ZTest:C1_1 .

Am I doing something wrong?  I am using TopBraid ME 3.3.2.

Thanks for your help.
Naicong





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