So, is there a simple away to say to delete the triples of the same pattern (?a ?b ?c) in ALL the imported graphs? Naicong
From: [email protected] [mailto:[email protected]] On Behalf Of Holger Knublauch Sent: Friday, May 20, 2011 2:59 PM To: [email protected] Subject: Re: [topbraid-users] Question about DELETE Yes, this is the expected behavior. If you just say DELETE { ?a ?b ?c } then the system will apply those changes to the default graph, which is the base model of the currently open file (without imports). In order to delete data from subgraphs, you need to explicitly mention those. In SPARQL 1.1 and TBC 3.5 the syntax for that would be DELETE { GRAPH <http://example.org/myimportedgraph> { ?a ?b ?c } } or in SPARQL 1.0 it was DELETE FROM <...>. And the Change History may report them because this is how Jena reports changes to the graphs (even if no delete has happened). Holger On May 21, 2011, at 7:02 AM, Li, Naicong wrote: 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]> [mailto:[email protected]] On Behalf Of Holger Knublauch Sent: Thursday, May 19, 2011 3:21 PM To: [email protected]<mailto:[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 -- You received this message because you are subscribed to the Google Group "TopBraid Suite Users", the topics of which include TopBraid Composer, TopBraid Live, TopBraid Ensemble, SPARQLMotion and SPIN. 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