Andy, thank you again for all your help! Regards, Neli. Neli P. Zlatareva, Ph.D Professor of Computer Science Central Connecticut State University, 1615 New Britain, CT 06050. www.cs.ccsu.edu/~neli
-----Original Message----- From: Andy Seaborne [mailto:[email protected]] Sent: Tuesday, February 21, 2017 9:49 AM To: [email protected] Subject: Re: request for help with FROM keyword in ARQ Neli, In Fuseki, only FROM <http://...>, <https://> and <ftp:> work As to whether there are a good idea for an application is a completely different question! It relies on the web being reliable. FROM <file:...> and the implicit "file:" in FROM <data.ttl>, us eo fthe classloader, and zip archives are not enabled. This is done by not having any file or java resource handling in the list of handlers that open resources in a query. You can upload files to Fuseki to work with them. Andy On 21/02/17 14:30, Zlatareva, Neli (Computer Science) wrote: > Andy, I tried 2.11.1 and it WORKS! THANK YOU so very much. > > Your help is truly invaluable -- that was an important thing for me to fix. > > If I please can bother you a little bit more -- you said that the FROM > keyword > > would not work in Fuseki because of the security concerns. Does it > mean that > > you can process remote data set only with ARQ? Federated queries work > on Fuseki, > > but you can run them only against SPARQL endpoints? How about just RDF files? > > Again, I am very grateful for your help. > > Thank you! > > Regards, Neli. > > > Neli P. Zlatareva, PhD > Professor of Computer Science > Department of Computer Science > Central Connecticut State University > New Britain, CT 06050 > Phone: (860) 832-2723 > Fax: (860) 832-2712 > Web site: cs.ccsu.edu/~neli/ > ________________________________ > From: Andy Seaborne <[email protected]> > Sent: Tuesday, February 21, 2017 3:51:05 AM > To: [email protected] > Subject: Re: request for help with FROM keyword in ARQ > > When used form the command line: > > FROM <ex002.ttl> > > I have tested 2.11.1, 2.13.0 and 3.0.0 and they work (as does 3.3.0 > development builds). > > Try "sparql --version" to mkae sure the right version of the command > is being run. > > ex002.ttl must exist as file with data in the current directory. > > If you get > org.apache.jena.riot.RiotNotFoundException: Not found: file:///... > > then it works but the file is not found. > > If you get > "No dataset provided" > then that version of the command line tool does not have proper FROM > support. > > You can provide the data on the command line with --data > > Andy > > On 21/02/17 07:07, Lorenz B. wrote: >> just for my understanding, FROM denotes a graph, right? and does the >> graph with the relative URI <ex002.ttl> exist in your data? > >>> Andy, thank you so much for the quick response. I tried 3.0.1, > 2.13.0, and 2.10.0 versions and none works with the FROM keyword. > Actually, the current version 3.2.0 returns the header of the results > table, while the older versions say "No data set found" (yes, there is > only the query sent for execution, because the data set is in the FROM > clause). >>> >>> I have seen ARQ demonstrations that worked perfectly fine with remote data >>> sets. Would you please suggest a specific ARQ version that would work with >>> remote data sets. >>> >>> THANK YOU! and sorry for bothering you so much. >>> >>> Regards, Neli. >>> >>> >>> Neli P. Zlatareva, PhD >>> Professor of Computer Science >>> Department of Computer Science >>> Central Connecticut State University New Britain, CT 06050 >>> Phone: (860) 832-2723 >>> Fax: (860) 832-2712 >>> Web site: cs.ccsu.edu/~neli/ >>> ________________________________ >>> From: Andy Seaborne <[email protected]> >>> Sent: Monday, February 20, 2017 6:11:40 PM >>> To: [email protected] >>> Subject: Re: request for help with FROM keyword in ARQ >>> >>> All older versions are available from >>> >>> >>> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Farch >>> ive.apache.org%2Fdist%2Fjena%2F&data=01%7C01%7CZlatareva%40ccsu.edu% >>> 7C4cfd845d56ba4d25283b08d459e5db2f%7C2329c570b5804223803b427d800e81b >>> 6%7C0&sdata=pNu769NrSmdJi%2B%2FKIrktKl9FoEIgeNI%2BUclVlHZ0CEo%3D&res >>> erved=0 >>> >>> (Or maven central.) >>> >>> Andy >>> >>> On 20/02/17 22:54, Zlatareva, Neli (Computer Science) wrote: >>>> Andy, thank you so much. Indeed I have downloaded >>>> >>>> apache-jena 3.2.0 the zip file, but this is what is available on >>>> the >>>> >>>> web site. Would you be able to point me to an older version >>>> >>>> where FROM keyword works. >>>> >>>> Thank you -- really appreciate your help. >>>> >>>> Regards, Neli. >>>> >>>> >>>> Neli P. Zlatareva, PhD >>>> Professor of Computer Science >>>> Department of Computer Science >>>> Central Connecticut State University New Britain, CT 06050 >>>> Phone: (860) 832-2723 >>>> Fax: (860) 832-2712 >>>> Web site: cs.ccsu.edu/~neli/ >>>> ________________________________ >>>> From: Andy Seaborne <[email protected]> >>>> Sent: Monday, February 20, 2017 5:24:46 PM >>>> To: [email protected] >>>> Subject: Re: request for help with FROM keyword in ARQ >>>> >>>> Neli, >>>> >>>> There was a bug in some versions (from 3.1.0 to 3.2.0) of the >>>> command query tool which did not process FROM correctly. >>>> >>>> Fuseki does not process FROM by reading a file (it would be a >>>> security problem exposing files on the server). It takes the graph >>>> from the dataset of the query was sent to which is not what you want here. >>>> >>>> Andy >>>> >>>> On 20/02/17 20:57, Zlatareva, Neli (Computer Science) wrote: >>>>> Hi, I am going through a book on SPARQL which uses ARQ. I am not able to >>>>> successfully run even the simplest query with the FROM keyword. >>>>> Here is an example: >>>>> works fine: >>>>> PREFIX ab: >>>>> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fl >>>>> earningsparql.com%2Fns%2Faddressbook%23&data=01%7C01%7CZlatareva%4 >>>>> 0ccsu.edu%7C0b99378fd70f49affa0208d459df4bf4%7C2329c570b5804223803 >>>>> b427d800e81b6%7C0&sdata=%2FPw2ZGSPDCr%2Fed3vVjl7cCiaamZPU%2FShRR5t >>>>> dOso9MU%3D&reserved=0> >>>>> SELECT ?craigEmail >>>>> WHERE >>>>> { ab:craig ab:email ?craigEmail . } >>>>> >>>>> but >>>>> >>>>> PREFIX ab: >>>>> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fl >>>>> earningsparql.com%2Fns%2Faddressbook%23&data=01%7C01%7CZlatareva%4 >>>>> 0ccsu.edu%7C0b99378fd70f49affa0208d459df4bf4%7C2329c570b5804223803 >>>>> b427d800e81b6%7C0&sdata=%2FPw2ZGSPDCr%2Fed3vVjl7cCiaamZPU%2FShRR5t >>>>> dOso9MU%3D&reserved=0> SELECT ?craigEmail FROM <ex002.ttl> WHERE { >>>>> ab:craig ab:email ?craigEmail . } >>>>> >>>>> does not work -- does not return anything -- just an empty table with the >>>>> column heading. I have the same problem trying to query a remote data se >>>>> with Fuseki server. >>>>> ANY help will be greatly appreciated. >>>>> Thank you so much. >>>>> Regards, Neli. >>>>> >>>>> >>>>> >>>>> Neli P. Zlatareva, PhD >>>>> Professor of Computer Science >>>>> Department of Computer Science >>>>> Central Connecticut State University New Britain, CT 06050 >>>>> Phone: (860) 832-2723 >>>>> Fax: (860) 832-2712 >>>>> Web site: cs.ccsu.edu/~neli/ >>>>> >>>>> >>>>> ________________________________ >>>>> From: Zlatareva, Neli (Computer Science) >>>>> Sent: Monday, February 20, 2017 9:34 AM >>>>> To: [email protected] >>>>> Subject: request for help with FROM keyword in ARQ >>>>> >>>>> >>>>> Hi, I am going through a book on SPARQL which uses ARQ. I am not able to >>>>> successfully run even the simplest query with the FROM keyword. >>>>> >>>>> Here is an example: >>>>> >>>>> works fine: >>>>> >>>>> PREFIX ab: >>>>> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flearningsparql.com%2Fns%2Faddressbook%23&data=01%7C01%7CZlatareva%40ccsu.edu%7C0b99378fd70f49affa0208d459df4bf4%7C2329c570b5804223803b427d800e81b6%7C0&sdata=%2FPw2ZGSPDCr%2Fed3vVjl7cCiaamZPU%2FShRR5tdOso9MU%3D&reserved=0> >>>>> >>>>> SELECT ?craigEmail >>>>> WHERE >>>>> { ab:craig ab:email ?craigEmail . } >>>>> >>>>> but >>>>> >>>>> PREFIX ab: >>>>> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flearningsparql.com%2Fns%2Faddressbook%23&data=01%7C01%7CZlatareva%40ccsu.edu%7C0b99378fd70f49affa0208d459df4bf4%7C2329c570b5804223803b427d800e81b6%7C0&sdata=%2FPw2ZGSPDCr%2Fed3vVjl7cCiaamZPU%2FShRR5tdOso9MU%3D&reserved=0> >>>>> SELECT ?craigEmail FROM <ex002.ttl> >>>>> WHERE >>>>> { ab:craig ab:email ?craigEmail . } >>>>> does not work -- does not return anything. >>>>> ANY help will be greatly appreciated. >>>>> Thank you so much. >>>>> Regards, Neli. >>>>> >>>>> >>>>> >>>>> Neli P. Zlatareva, PhD >>>>> Professor of Computer Science >>>>> Department of Computer Science >>>>> Central Connecticut State University >>>>> New Britain, CT 06050 >>>>> Phone: (860) 832-2723 >>>>> Fax: (860) 832-2712 >>>>> Web site: cs.ccsu.edu/~neli/ >>>>> >
