aborne
Sent: maandag 2 december 2019 14:32
To: users@jena.apache.org
Subject: Re: ElementPathBlock comparison
Hi Barry,
How easy is it to use JGraphT with Jena?
I'd be very interested in hearing about your experiences.
Andy
On 02/12/2019 10:43, Nouwt, B. (Barry) wrote:
Hey Andy,
his Java class:
>>>
>>> https://github.com/barrynl/jena-example/blob/master/src/main/java/nl
>>> / tno/ict/ds/cb/jena/JenaIsomorphTest.java
>>>
>>>
>>> it will show how converting variable nodes to blank nodes and using
>>> the Iso
nd it works
as expected.
See: https://jgrapht.org/guide/UserOverview#graph-comparisons
I might retry IsoMatcher/IsoAlg in the future.
Regards, Barry
-Original Message-
From: Andy Seaborne
Sent: zondag 1 december 2019 10:58
To: users@jena.apache.org
Subject: Re: ElementPathBlock compariso
-
From: Andy Seaborne
Sent: zondag 1 december 2019 10:58
To: users@jena.apache.org
Subject: Re: ElementPathBlock comparison
Barry,
Pull request #642 should fix this.
Either do the variable -> blank node replacement and call
IsoMatcher.isomorphic(graph,graph)
Or call the isomorphism a
to blank nodes and using
the IsoMatcher yields true, while it should be false.
Maybe you can find what I'm doing wrong.
Thanks in advance!
Barry
-Original Message-
From: Andy Seaborne
Sent: donderdag 28 november 2019 11:22
To: users@jena.apache.org
Subject: Re: ElementPathBloc
8 november 2019 11:22
To: users@jena.apache.org
Subject: Re: ElementPathBlock comparison
On 25/11/2019 13:52, Nouwt, B. (Barry) wrote:
Hey Andy,
I have another question about comparing ElementPathBlock's the way you suggest
below using IsoMatcher.
The following two graph patterns shoul
22
To: users@jena.apache.org
Subject: Re: ElementPathBlock comparison
On 25/11/2019 13:52, Nouwt, B. (Barry) wrote:
> Hey Andy,
>
> I have another question about comparing ElementPathBlock's the way you
> suggest below using IsoMatcher.
>
> The following two graph patterns s
example I can copy-and-paste and run?
If uou put it on a gist/pastebin I might find time to try it.
Andy
Regards, Barry
-Original Message-
From: Nouwt, B. (Barry)
Sent: donderdag 21 november 2019 13:03
To: users@jena.apache.org
Subject: RE: ElementPathBlock comparison
Hey A
graph patterns are judged the same while they
shouldn't.
Any idea what I'm doing wrong?
Regards, Barry
-Original Message-
From: Nouwt, B. (Barry)
Sent: donderdag 21 november 2019 13:03
To: users@jena.apache.org
Subject: RE: ElementPathBlock comparison
Hey Andy, thanks. I'
--Original Message-
From: Andy Seaborne
Sent: woensdag 20 november 2019 10:41
To: users@jena.apache.org
Subject: Re: ElementPathBlock comparison
On 19/11/2019 15:52, Nouwt, B. (Barry) wrote:
> Hi Andy, I have an additional question regarding your tip about turning
> variables into
return mapping.makeIsomorphic(n1, n2) ;
(not tested)
Andy
Regards, Barry
-Original Message-
From: Nouwt, B. (Barry)
Sent: dinsdag 19 november 2019 16:49
To: users@jena.apache.org
Subject: RE: ElementPathBlock comparison
Thanks for the quick replies.
@Andy Exactly, I do car
ePattern, but then I still a way to match them. For my problem this RDF
encoding is not necessary and encoding it using the Google Guava Graph lib
seems sufficient.
Regards, Barry
-Original Message-
From: Andy Seaborne
Sent: dinsdag 19 november 2019 15:49
To: users@jena.apache.org
Subje
t that location.
Regards, Barry
-Original Message-
From: Nouwt, B. (Barry)
Sent: dinsdag 19 november 2019 16:49
To: users@jena.apache.org
Subject: RE: ElementPathBlock comparison
Thanks for the quick replies.
@Andy Exactly, I do care about the shape, but not about exact variable names.
roblem this RDF
encoding is not necessary and encoding it using the Google Guava Graph lib
seems sufficient.
Regards, Barry
-Original Message-
From: Andy Seaborne
Sent: dinsdag 19 november 2019 15:49
To: users@jena.apache.org
Subject: Re: ElementPathBlock comparison
> Hi all,
&
Hi all,
I have two ARQ ElementPathBlocks (or Basic Graph Pattern, see SPARQL spec
https://www.w3.org/TR/sparql11-query/#GraphPattern) and would like to know
whether they are equal ignoring variable names and ordering of the triples.
What is the best/easiest way to do that with the Apache Je
SPIN can convert SPARQL to RDF. See sp:TriplePattern:
https://spinrdf.org/sp.html#sp-TriplePattern
On Tue, Nov 19, 2019 at 3:04 PM Nouwt, B. (Barry)
wrote:
>
> I found the following possible solution on stack overflow:
> https://stackoverflow.com/questions/21755157/sparql-graph-pattern-compariso
I found the following possible solution on stack overflow:
https://stackoverflow.com/questions/21755157/sparql-graph-pattern-comparison
They suggest to turn both graph patterns into actual graphs and using regular
graph isomorphism algorithms to judge their equality. Does Apache Jena already
ha
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