[Virtuoso-users] Upgrading from VOS 6 to VOS 7

2013-05-21 Thread David Brooks
Hi, What is the recommended way to upgrade a VOS 6 database to VOS 7 ? Thanks, Dave -- Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service th

[Virtuoso-users] VOS develop/7 returns string instead of URI with ORDER BY

2013-04-24 Thread David Brooks
Hi, With the latest develop/7 sources (commit 8dc86c42) and under OS/X 10.6.8, string literals, instead of URIs, are returned from SPARQL queries. The query: SELECT * FROM WHERE { ?s a ?t } returns rows in the form: result: [s=uri

Re: [Virtuoso-users] Bug in Graph Store HTTP protocol turtle uploads

2013-04-09 Thread David Brooks
Hi Erich, I suspect you will find 6.1.6 supports application/x-turtle -- I recall similar issues when I first started using Virtuoso. Best regards, Dave On 10/04/13 12:45 PM, Erich Bremer wrote: > Hi Ivan, > > I have it set as text/turtle. Hugh said it works fine in the pre > 6.1.7 (whe

Re: [Virtuoso-users] Virtuoso crashes with SIGFPE

2013-03-01 Thread David Brooks
kedin.com/company/openlink-software/ Twitter -- http://twitter.com/OpenLink Google+ -- http://plus.google.com/100570109519069333827/ Facebook -- http://www.facebook.com/OpenLinkSoftware Universal Data Access, Integration, and Management Technology Providers On 28 Feb 2013, at 08:33, David Brooks <

Re: [Virtuoso-users] Virtuoso crashes with SIGFPE

2013-02-28 Thread David Brooks
A further update -- the only debugging option needed to prevent the crash is --with-malloc-debug. Thanks. Dave On 28/02/13 8:19 PM, David Brooks wrote: An update: 1. The divide-by-zero happens with the latest sources in git (0e12bf7) 2. The divide-by-zero will repeatedly occur after a

Re: [Virtuoso-users] Virtuoso crashes with SIGFPE

2013-02-27 Thread David Brooks
f the latest sources are built with debug options enabled (debug, malloc-debug and mtx-debug). Thanks, Dave On 28/02/13 1:19 PM, David Brooks wrote: On 28/02/13 1:04 PM, David Brooks wrote: Hi, I'm having VOS crash with "Server received signal 8. Continuing with the default action

Re: [Virtuoso-users] Virtuoso crashes with SIGFPE

2013-02-27 Thread David Brooks
On 28/02/13 1:04 PM, David Brooks wrote: Hi, I'm having VOS crash with "Server received signal 8. Continuing with the default action for that signal." when using the SPARQL endpoint (signal 8 is SIGFPE). This is happening under network load -- another process is receiv

[Virtuoso-users] Virtuoso crashes with SIGFPE

2013-02-27 Thread David Brooks
Hi, I'm having VOS crash with "Server received signal 8. Continuing with the default action for that signal." when using the SPARQL endpoint (signal 8 is SIGFPE). This is happening under network load -- another process is receiving and saving streamed datasets, storing associated metadata in

Re: [Virtuoso-users] Virtuoso 37000 Error SP031

2013-01-25 Thread David Brooks
ccess, Integration, and Management Technology Providers On 22 Nov 2012, at 02:51, David Brooks wrote: Hi Hugh, After a bit of digging, the query works with git SHA 9ae1782 and dies with 442379d. Thanks, Dave On 22/11/12 11:26 AM, David Brooks wrote: And even get the error with: select * where {

Re: [Virtuoso-users] 100% cpu with Sparql query with bif:search_excerpt, bif:vector and accented characters

2013-01-06 Thread David Brooks
Hmm, Virtuoso's sample INI file has spaces preceding parameter values and running with "NumberOfBuffers = 8" certainly results in status() reporting 8 buffers. Marcelo, is your Virtuoso somehow using a different configuration file to the one you think it is ?? Regards, Dave

Re: [Virtuoso-users] HTTP Request Size in Virtuoso

2012-12-18 Thread David Brooks
Hi Burak, Presumably you are not creating these queries by typing them into a web browser form? But instead have written code that does a HTTP GET request to the SPARQL endpoint?? In which case, as Patrick has suggested, use POST instead of GET -- the request needs a Content-type of "applicati

Re: [Virtuoso-users] Fetching types for a large number of concepts

2012-12-13 Thread David Brooks
What about: SELECT ?c ?t { ?cncpt foaf:isPrimaryTopicOf ?c . ?cncpt a ?t . FILTER (?cncpt = || ?cncpt = || ... ) } with no FILTER if you want all concepts. Regards, Dave On 14/12/12 1:15 AM, Parsa Ghaffari wrote: Hi folks, What's the best way to retrieve types (rdf:type) of a lar

Re: [Virtuoso-users] Virtuoso 37000 Error SP031

2012-11-21 Thread David Brooks
I also meant to say that this is with Version 06.01.3127 Thanks. On 22/11/12 10:36 AM, David Brooks wrote: Hi, I'm getting "Virtuoso 37000 Error SP031: SPARQL compiler: Internal error: sparp_find_origin_of_external_var(): external source equiv is found, external source var is

[Virtuoso-users] Virtuoso 37000 Error SP031

2012-11-21 Thread David Brooks
Hi, I'm getting "Virtuoso 37000 Error SP031: SPARQL compiler: Internal error: sparp_find_origin_of_external_var(): external source equiv is found, external source var is not" with: PREFIX prv: select * where { graph

Re: [Virtuoso-users] Loading RDF into Virtuoso

2012-10-22 Thread David Brooks
tall", followed by changing the owner and group of /usr/local/virtuoso-opensource/var/lib/virtuoso/db to the user that runs Virtuoso; nothing has been changed in the INI apart from some of the resource limits. I see you are running under Linux. Do you by any chance have SE Linux enable

Re: [Virtuoso-users] Loading RDF into Virtuoso

2012-10-21 Thread David Brooks
s solved (needed to configure authentication > for the SPARQL endpoint). There is still a "HTTP 409 Invalid path" > error, not sure what is causing it. > > Uldis > > On Sun, Oct 21, 2012 at 11:57 PM, David Brooks > wrote: >> Hmm, /sparql-graph-crud/ is for gra

Re: [Virtuoso-users] Loading RDF into Virtuoso

2012-10-21 Thread David Brooks
Hmm, /sparql-graph-crud/ is for graph operations, so to delete a graph use the DELETE method, ie: curl -X DELETE http://localhost:8890/sparql-graph-crud?graph-uri=http://test.org/my To delete a statement from a graph use the /sparql/ endpoint and SPARQL Update operations (http://www.w3.org/TR

Re: [Virtuoso-users] Loading RDF into Virtuoso

2012-10-19 Thread David Brooks
I suggest using the SPARQL graph endpoint at http://localhost:8890/sparql-graph-crud/ along with libcurl (or equivalent) in your application. Use POST to extend an existing graph, PUT to replace a graph, and DELETE to remove one, specifying the graph via a parameter of 'graph_uri' (e.g. POST

Re: [Virtuoso-users] Unexpected empty result set from SQL

2012-10-12 Thread David Brooks
/100570109519069333827/ Facebook -- http://www.facebook.com/OpenLinkSoftware Universal Data Access, Integration, and Management Technology Providers On 11 Oct 2012, at 10:00, David Brooks wrote: Hi, I now have a SQL query that returns an empty result set when a condition matching the expected

[Virtuoso-users] Unexpected empty result set from SQL

2012-10-11 Thread David Brooks
Hi, I now have a SQL query that returns an empty result set when a condition matching the expected result is part of the query... The SQL was obtained by translating from SPARQL whilst investigating one of my issues from last week. Exactly the same behaviour occurs on a 64-bit OS/X version of

Re: [Virtuoso-users] SPARQL processor sensitive to text length of queries.

2012-10-04 Thread David Brooks
google.com/100570109519069333827/ Facebook -- http://www.facebook.com/OpenLinkSoftware Universal Data Access, Integration, and Management Technology Providers On 4 Oct 2012, at 22:23, David Brooks wrote: Hi Hugh, I noticed things weren't right using the SPARQL endpoint so cut and pasted the query i

Re: [Virtuoso-users] SPARQL processor sensitive to text length of queries.

2012-10-04 Thread David Brooks
itter -- http://twitter.com/OpenLink Google+ -- http://plus.google.com/100570109519069333827/ Facebook -- http://www.facebook.com/OpenLinkSoftware Universal Data Access, Integration, and Management Technology Providers On 4 Oct 2012, at 04:29, David Brooks wrote: Hi, Following are two screen shots showing

Re: [Virtuoso-users] Virtuoso S0022 Error SQ200: No column errors with MINUS

2012-10-03 Thread David Brooks
On 4/10/12 11:19 AM, Kingsley Idehen wrote: On 10/3/12 5:53 PM, David Brooks wrote: After a bit more investigation: 1) The problem lies somewhere in the SPARQL to SQL translation. Using ISQL and with example URIs (that don't exist): SQL> sparql select ?g where { graph <http://

Re: [Virtuoso-users] Virtuoso S0022 Error SQ200: No column errors with MINUS

2012-10-03 Thread David Brooks
Hmm, after loading a fresh instance of 64-bit Virtuoso under Snow Leopard with data everything works... Why? What could have caused the original problem? I have a copy of the original databases if someone wants to give me pointers. Thanks, Dave On 4/10/12 10:53 AM, David Brooks wrote

Re: [Virtuoso-users] Virtuoso S0022 Error SQ200: No column errors with MINUS

2012-10-03 Thread David Brooks
Snow Leopard; the one which works is 32-bit Virtuoso under Centos. Next is to try a completely new install under OS/X, but I'm wondering if there is some difference between the 64-bit and 32-bit code... Thanks, Dave On 3/10/12 10:53 PM, David Brooks wrote: Hi, I'm getting error

[Virtuoso-users] Virtuoso S0022 Error SQ200: No column errors with MINUS

2012-10-03 Thread David Brooks
Hi, I'm getting errors from Virtuoso, with both 6.1.6 and develop/6 from git. Queries such as: PREFIX prv: PREFIX bsml: select * where { { graph