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%2Farchive.apache.org%2Fdist%2Fjena%2F&data=01%7C01%7CZlatareva%40ccsu.edu%7C4cfd845d56ba4d25283b08d459e5db2f%7C2329c570b5804223803b427d800e81b6%7C0&sdata=pNu769NrSmdJi%2B%2FKIrktKl9FoEIgeNI%2BUclVlHZ0CEo%3D&reserved=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%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 -- 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/ >>>>
