dotnetrdf-support Mailing List for dotNetRDF

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All

 This list is now closed as the project has moved infrastructure to GitHub

Please direct future questions to http://github.com/dotnetrdf/dotnetrdf/issues

Rob

This is probably a bug in the optimiser but without a complete example it is hard to say

Please note that the project is undergoing a change of leadership and infrastructure and these list will shortly be closing. Please report any bugs to http://github.com/dotnetrdf/dotnetrdf/issues

Rob

On 20/06/2016 17:48, "Paul Tyson" <pau...@ob...> wrote:

I'm getting unexpected results when round-tripping a sparql update string throug SparqlUpdateParser and SparqlUpdateCommandSet.

Input string is like:

INSERT {...}
WHERE {
  VALUES (?v1 ?v2 ?v3) {(<..> "..." "...")}
  BIND (...)
  BIND (...)
  BIND (...)
}

This code: 

SparqlUpdateParser parser = new SparqlUpdateParser();
SparqlUpdateCommandSet q = parser.ParseFromString(input_str);
return q.ToString();

Returns:

INSERT {...}
WHERE {
  BIND (...)
  BIND (...)
  BIND (...)
  VALUES (?v1 ?v2 ?v3) {(<..> "..." "...")}
}

Thanks in advance for any help on this.

Regards,
--Paul

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Frank

All names spaces for queries must be declared in the query. Queries are parsed without any reference to the data on which they will evaluate must be entirely self-contained.

 Please note that project is undergoing a change of leadership and infrastructure and that these mailing lists will close in the near future. Please ask any future questions on GitHub at http://github.com/dotnetrdf/dotnetrdf/issues

Rob

On 16/06/2016 15:52, "Frank Schumacher" <fs...@in...> wrote:

Hi folks,

I have strange problem with the IGraph.ExecuteQuery(string s) method. 
For the following query-string:

SELECT * where { ?releaseGroupURI a mbo:ReleaseGroup. ?releaseGroupURI 
mbo:musicBrainzId ?mbId. FILTER (REGEX(STR(?mbId), 
"c9744809-c5b8-4d3c-a115-1a3daa881c09", "i")). OPTIONAL 
{?releaseGroupURI rdfs:comment ?comment} }

I get the following error:

{"The Namespace URI for the given Prefix 'mbo' is not known by the 
in-scope NamespaceMapper.  Did you forget to define a namespace for this 
prefix?"}

But I DID defined the prefix beforehand:
graph.NamespaceMap.AddNamespace("mbo", new 
Uri("http://creativeartefact.org/ontology/"));

I double checked it in the local variable window of my Visual Studio and 
also entered the line

graph.NamespaceMap.GetNamespaceUri("mbo");

in the direct window, which yields the expected result.

If I add "PREFIX mbo: <http://creativeartefact.org/ontology/> " in front 
of my query, everything works fine.

Any idea, why the NamespaceMapper doesn't find the defined prefix(es - 
same with rdfs.)?

Thanks in advance,
Frank

-- 
************************************************
* Universität Leipzig, Institut für Informatik *
*  Abteilung Betriebliche Informationssysteme  *
*     http://bis.informatik.uni-leipzig.de     *
*            Tel.: 0341 / 97 32 256            *
*                                              *
* ========== Opera Metal: molllust =========== *
*           http://www.molllust.com            *
*          M'era Luna Newcomer 2013!           *
************************************************

------------------------------------------------------------------------------
What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic
patterns at an interface-level. Reveals which users, apps, and protocols are 
consuming the most bandwidth. Provides multi-vendor support for NetFlow, 
J-Flow, sFlow and other flows. Make informed decisions using capacity planning
reports. http://pubads.g.doubleclick.net/gampad/clk?id=1444514421&iu=/41014381
_______________________________________________
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dot...@li...
https://lists.sourceforge.net/lists/listinfo/dotnetrdf-support

I'm getting unexpected results when round-tripping a sparql update string throug SparqlUpdateParser and SparqlUpdateCommandSet.

Input string is like:

INSERT {...}
WHERE {
  VALUES (?v1 ?v2 ?v3) {(<..> "..." "...")}
  BIND (...)
  BIND (...)
  BIND (...)
}

This code: 

SparqlUpdateParser parser = new SparqlUpdateParser();
SparqlUpdateCommandSet q = parser.ParseFromString(input_str);
return q.ToString();

Returns:

INSERT {...}
WHERE {
  BIND (...)
  BIND (...)
  BIND (...)
  VALUES (?v1 ?v2 ?v3) {(<..> "..." "...")}
}

Thanks in advance for any help on this.

Regards,
--Paul

Hi folks,

I have strange problem with the IGraph.ExecuteQuery(string s) method. 
For the following query-string:

SELECT * where { ?releaseGroupURI a mbo:ReleaseGroup. ?releaseGroupURI 
mbo:musicBrainzId ?mbId. FILTER (REGEX(STR(?mbId), 
"c9744809-c5b8-4d3c-a115-1a3daa881c09", "i")). OPTIONAL 
{?releaseGroupURI rdfs:comment ?comment} }

I get the following error:

{"The Namespace URI for the given Prefix 'mbo' is not known by the 
in-scope NamespaceMapper.  Did you forget to define a namespace for this 
prefix?"}

But I DID defined the prefix beforehand:
graph.NamespaceMap.AddNamespace("mbo", new 
Uri("http://creativeartefact.org/ontology/"));

I double checked it in the local variable window of my Visual Studio and 
also entered the line

graph.NamespaceMap.GetNamespaceUri("mbo");

in the direct window, which yields the expected result.

If I add "PREFIX mbo: <http://creativeartefact.org/ontology/> " in front 
of my query, everything works fine.

Any idea, why the NamespaceMapper doesn't find the defined prefix(es - 
same with rdfs.)?

Thanks in advance,
Frank

-- 
************************************************
* Universität Leipzig, Institut für Informatik *
*  Abteilung Betriebliche Informationssysteme  *
*     http://bis.informatik.uni-leipzig.de     *
*            Tel.: 0341 / 97 32 256            *
*                                              *
* ========== Opera Metal: molllust =========== *
*           http://www.molllust.com            *
*          M'era Luna Newcomer 2013!           *
************************************************

Hello

I'm trying to excecute this query:

PREFIX escat: <http://es.dbpedia.org/resource/Categoría:>
SELECT ?recurso
WHERE
{
    ?recurso dcterms:subject escat:Alzamiento_de_Varsovia
}

against the endpoint of the spanish dbpedia http://es.dbpedia.org/sparql. Using the Virtuso interface gives good results but none using SparqlRemoteEndpoint.

¿Can you help me please?

Thanks in advance
Carlos

Hello support team,

Is there a way that we can use dotNetRdf with dotnet5.4 platform?
Trying to add "dotNetRDF": "1.0.10-prerelease02" dependency we get the below error:

Severity

Code

Description

Project

File

Line

Suppression State

Error

NU1002

The dependency dotNetRDF 1.0.10-prerelease02 in project TransformationsLibrary does not support framework .NETPlatform,Version=v5.4.

TransformationsLibrary

...\TransformationsLibrary\project.json

22

If dotNetRdf is not yet updated to be supported by .net Core/ .net 5.4 projects, is there a plan or estimate when is it going to be supported by these new technologies?

Thank you!

Cheers,
Corina Stanica

[Nagarro-Signatur]
Nagarro Software s.r.l.
Timisoara, Piata Consiliul Europei nr.1, Romania
Mobile: +40-0722-473.470

Thank you!  After going back and fixing all the References, it's working well.

-bob

On Thu, May 5, 2016 at 3:08 AM, Rob Vesse <rv...@do...> wrote:
> If you were building for ASP.Net then you should be using the full .Net Version of the library rather than the portable version
>
>
> The portable version contains implementations of missing pieces of the core library that are not normally available on the portable platform and so will conflict with the official implementations if used in places where the normal core library is available.
>
> Rob
>
> On 04/05/2016 23:44, "Robert Kerr" <rob...@gm...> wrote:
>
>>Hi,
>>I'm trying to implement a function to return a HashAlgorithm in my
>>ASP.NET application.  I'm using Visual Studio 2013 with dotNetRDF
>>1.0.9.3683.  The function looks like:
>>
>>private HashAlgorithm GetHash()
>>        {
>>             string keystring = string.Format("{0}&{1}","consumer_secret",
>>                                             "token_secret");
>>             var hmacsha1 = new HMACSHA1
>>                 {
>>                     Key = System.Text.Encoding.ASCII.GetBytes(keystring)
>>                 };
>>             return hmacsha1;
>>        }
>>
>>
>>But I'm getting a compiler error:
>>
>>The type 'System.Security.Cryptography.HashAlgorithm' exists in both
>>'C:\Program Files (x86)\Reference
>>Assemblies\Microsoft\Framework\.NETFramework\v4.5\mscorlib.dll' and
>>'D:\Dev\MyProject\packages\dotNetRDF.1.0.9.3683\lib\portable-net4+sl5+netcore45+wpa81+wp8+MonoAndroid1+MonoTouch1\dotNetRDF.dll'
>>
>>
>>I've spent most of the afternoon trying to figure out what could be
>>wrong.  I've ensured I have no disparate versions of dotNetRDF.dll on
>>my machine, and everything seems to be pointing to the right place.
>>
>>Help?
>>
>>thanks
>>
>>-bob
>>
>>
>>
>>--
>>Meddle not in the affairs of dragons, for thou art crunchy, and taste
>>good with ketchup.
>>
>>------------------------------------------------------------------------------
>>Find and fix application performance issues faster with Applications Manager
>>Applications Manager provides deep performance insights into multiple tiers of
>>your business applications. It resolves application problems quickly and
>>reduces your MTTR. Get your free trial!
>>https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
>>_______________________________________________
>>dotNetRDF-Support mailing list
>>dot...@li...
>>https://lists.sourceforge.net/lists/listinfo/dotnetrdf-support
>
>
>
>
> ------------------------------------------------------------------------------
> Find and fix application performance issues faster with Applications Manager
> Applications Manager provides deep performance insights into multiple tiers of
> your business applications. It resolves application problems quickly and
> reduces your MTTR. Get your free trial!
> https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
> _______________________________________________
> dotNetRDF-Support mailing list
> dot...@li...
> https://lists.sourceforge.net/lists/listinfo/dotnetrdf-support

-- 
Meddle not in the affairs of dragons, for thou art crunchy, and taste
good with ketchup.

If you were building for ASP.Net then you should be using the full .Net Version of the library rather than the portable version

The portable version contains implementations of missing pieces of the core library that are not normally available on the portable platform and so will conflict with the official implementations if used in places where the normal core library is available.

Rob

On 04/05/2016 23:44, "Robert Kerr" <rob...@gm...> wrote:

>Hi,
>I'm trying to implement a function to return a HashAlgorithm in my
>ASP.NET application.  I'm using Visual Studio 2013 with dotNetRDF
>1.0.9.3683.  The function looks like:
>
>private HashAlgorithm GetHash()
>        {
>             string keystring = string.Format("{0}&{1}","consumer_secret",
>                                             "token_secret");
>             var hmacsha1 = new HMACSHA1
>                 {
>                     Key = System.Text.Encoding.ASCII.GetBytes(keystring)
>                 };
>             return hmacsha1;
>        }
>
>
>But I'm getting a compiler error:
>
>The type 'System.Security.Cryptography.HashAlgorithm' exists in both
>'C:\Program Files (x86)\Reference
>Assemblies\Microsoft\Framework\.NETFramework\v4.5\mscorlib.dll' and
>'D:\Dev\MyProject\packages\dotNetRDF.1.0.9.3683\lib\portable-net4+sl5+netcore45+wpa81+wp8+MonoAndroid1+MonoTouch1\dotNetRDF.dll'
>
>
>I've spent most of the afternoon trying to figure out what could be
>wrong.  I've ensured I have no disparate versions of dotNetRDF.dll on
>my machine, and everything seems to be pointing to the right place.
>
>Help?
>
>thanks
>
>-bob
>
>
>
>-- 
>Meddle not in the affairs of dragons, for thou art crunchy, and taste
>good with ketchup.
>
>------------------------------------------------------------------------------
>Find and fix application performance issues faster with Applications Manager
>Applications Manager provides deep performance insights into multiple tiers of
>your business applications. It resolves application problems quickly and
>reduces your MTTR. Get your free trial!
>https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
>_______________________________________________
>dotNetRDF-Support mailing list
>dot...@li...
>https://lists.sourceforge.net/lists/listinfo/dotnetrdf-support

Hi,
I'm trying to implement a function to return a HashAlgorithm in my
ASP.NET application.  I'm using Visual Studio 2013 with dotNetRDF
1.0.9.3683.  The function looks like:

private HashAlgorithm GetHash()
        {
             string keystring = string.Format("{0}&{1}","consumer_secret",
                                             "token_secret");
             var hmacsha1 = new HMACSHA1
                 {
                     Key = System.Text.Encoding.ASCII.GetBytes(keystring)
                 };
             return hmacsha1;
        }

But I'm getting a compiler error:

The type 'System.Security.Cryptography.HashAlgorithm' exists in both
'C:\Program Files (x86)\Reference
Assemblies\Microsoft\Framework\.NETFramework\v4.5\mscorlib.dll' and
'D:\Dev\MyProject\packages\dotNetRDF.1.0.9.3683\lib\portable-net4+sl5+netcore45+wpa81+wp8+MonoAndroid1+MonoTouch1\dotNetRDF.dll'

I've spent most of the afternoon trying to figure out what could be
wrong.  I've ensured I have no disparate versions of dotNetRDF.dll on
my machine, and everything seems to be pointing to the right place.

Help?

thanks

-bob

-- 
Meddle not in the affairs of dragons, for thou art crunchy, and taste
good with ketchup.

Hello,

First, thank you for your Open Source service on dotNetRdf.
I'm beginner on this library and I have to study on this subject.
I want to access and manipulate my data which are based on a local virtuoso by the programm that I want to write it in C#.
Could you send me a detailed tutorial for understanding this library.

Thanks,

Alireza

Synchronous HTTP requests are not supported in PCL libraries and this is a
limitation of the PCL platform

Any dotNetRDF API call that would require a synchronous HTTP request will
therefore not exist under the PCL.  The error message is telling you that
the overload does not exist and that you need to use the alternative
asynchronous overload which Visual Studio is suggesting.

Rob

On 05/01/2016 13:03, "Konstantinos Kotis" <kot...@gm...> wrote:

>Dear Rob,
>
>Regarding the example in
>https://bitbucket.org/dotnetrdf/dotnetrdf/wiki/UserGuide/Querying%20with%2
>0SPARQL
>for Remote Querying of a SPARQL endpoint, I have a problem with:
>
>//Make a SELECT query against the Endpoint
>SparqlResultSet results = endpoint.QueryWithResultSet("SELECT DISTINCT
>?Concept WHERE {[] a ?Concept}");
>
>
>In my C# project, I got a strange error (attached). Could you please
>check that this method is implemented for the portable API? I can see
>it in the documentation, but I cannot 'see' why it is not passing the
>compilation.
>
>Thanks in advance,
>Konstantinos
>
>
>-- 
>Konstantinos Kotis, PhD
>Research Associate
>Department of Digital Systems, University of Piraeus.
>Head of IT Department
>Samos Regional Unit, North Aegean Regional Administration (NARA).
>
>Samos, Greece
>+30 6974822712
>http://gr.linkedin.com/in/kotis

Hi,
FYI,
I am just starting to use DotNetRdf and noticed something that might be improved to help newcomers.
In SparqlGUI,
If I check "Default graph is union of all graphs option", then Import a file and run a Query everything is as expected.
If I then click the Clear button and re-import the same file then re-running the query returns no results?!
Workaround is to uncheck and then recheck the "Default graph is union of all graphs" option.
Cloned and rebuilt from BitBucket and gives the same behavior.
I could open an issue and try to correct it if you think it would be worthwhile.
Cheers,
Jacques

You aren't missing anything but dotNetRDF probably is

I'm not sure that we actually support reasoning properly for Stardog 3.x and
above, I no longer actively use Stardog and the developer who was
maintaining the connector is no longer active in the project

Filed as CORE-461 
(http://dotnetrdf.org/tracker/Issues/IssueDetail.aspx?id=461) which we'll
try and fix for the next release

Rob

p.s. This is a subscription based list and your question was manually
moderated through this time, if you want to ask further questions please
subscribe at https://lists.sourceforge.net/lists/listinfo/dotnetrdf-support

From:  Christopher Morris <CX...@st...>
Reply-To:  dotNetRDF User Help and Support
<dot...@li...>
Date:  Monday, 14 December 2015 12:51
To:  "dot...@li..."
<dot...@li...>
Subject:  [dotNetRDF-Support] Reasoning with stardog 4

> Hi,
>  
> I am using dotNETRDF to connect to stardog version 4.
> It is stated in the your documentation that: “Note that from Stardog 3.x the
> reasoning level is controlled at the database level and cannot be changed at
> the connection level.”
>  
> What should I do working with stardog 4?
>  
> Setting the reasoning level as per versions 1 and 2 doesn’t work, as you would
> expect, however, for version the stardog manual states that: “For HTTP, the
> reasoning flag is specified with the other HTTP request parameters” and I can
> find no way to set that in dotNetRDF?
>  
> Currently my queries are being answered with no reasoning – if I supply them
> to stardog via it’s web interface they produce the same results with reasoning
> disabled as dotNetRDF gives my software. If reasoning is enabled in the web
> interface different (in this case, many more) results are returned, to the
> query in the web interface.
>  
> Is there something I’m missing?
>  
> Many thanks
>  
>  
> Chris Morris
> Birmingham Centre for Railway Research and Education
> University of Birmingham
> Edgbaston
> Birmingham 
> B15 2TT
> United Kingdom
>  
> ( +44 (0) 121 414 5490
> 7  +44 (0) 121 414 4291
> * cx...@bh...
> üwww.morrisdigital.co.uk <http://www.morrisdigital.co.uk/>
>  
> ------------------------------------------------------------------------------
> _______________________________________________ dotNetRDF-Support mailing list
> dot...@li...
> https://lists.sourceforge.net/lists/listinfo/dotnetrdf-support

Without seeing any code it is impossible to say what may/may not be the
issue

You can try and enable HTTP debugging which may give you slightly more
detail on the communications to and from Stardog but won't necessarily shed
any more light since the error message implies Stardog isn't sending us back
any information with the error

https://bitbucket.org/dotnetrdf/dotnetrdf/wiki/HowTo/Debug%20HTTP%20Communic
ation.wiki#!debugging-http-communication

You may also want to look at the Stardog log (by default stardog.log in your
STARDOG_HOME) to see if there is any error information present in the log

Rob

From:  Mark Audas <ma...@he...>
Reply-To:  dotNetRDF User Help and Support
<dot...@li...>
Date:  Monday, 30 November 2015 22:53
To:  "dot...@li..."
<dot...@li...>
Subject:  [dotNetRDF-Support] dotnetrdf and stardog 4.0

> I’m running dotnetrdf 1.0.9.3683, VDS.Common.1.6.0, and Stardog 4.0.
>  
> Calling UpdateGraph I get the following error (this code worked with Stardog
> 1.x and dotnetrdf 1.0.7.x.
>  
> Error updating graph <xxx>:A HTTP error (HTTP 500 Internal Server Error)
> occurred while updating a Graph in the Store.
> Empty response body, see aformentioned status line or the inner exception for
> further details.
>  
> Can you point me in the right direction to resolve this?
>  
> Many thanks,
> Mark Audas
>  
>  
> ------------------------------------------------------------------------------
> Go from Idea to Many App Stores Faster with Intel(R) XDK Give your users
> amazing mobile app experiences with Intel(R) XDK. Use one codebase in this
> all-in-one HTML5 development environment. Design, debug & build mobile apps &
> 2D/3D high-impact games for multiple OSs.
> http://pubads.g.doubleclick.net/gampad/clk?id=254741911&iu=/4140______________
> _________________________________ dotNetRDF-Support mailing list
> dot...@li...
> https://lists.sourceforge.net/lists/listinfo/dotnetrdf-support

Hi,

I am using dotNETRDF to connect to stardog version 4.
It is stated in the your documentation that: "Note that from Stardog 3.x the reasoning level is controlled at the database level and cannot be changed at the connection level."

What should I do working with stardog 4?

Setting the reasoning level as per versions 1 and 2 doesn't work, as you would expect, however, for version the stardog manual states that: "For HTTP, the reasoning flag is specified with the other HTTP request parameters" and I can find no way to set that in dotNetRDF?

Currently my queries are being answered with no reasoning - if I supply them to stardog via it's web interface they produce the same results with reasoning disabled as dotNetRDF gives my software. If reasoning is enabled in the web interface different (in this case, many more) results are returned, to the query in the web interface.

Is there something I'm missing?

Many thanks

Chris Morris
Birmingham Centre for Railway Research and Education
University of Birmingham
Edgbaston
Birmingham
B15 2TT
United Kingdom

* +44 (0) 121 414 5490
7  +44 (0) 121 414 4291
* cx...@bh...
ü www.morrisdigital.co.uk<http://www.morrisdigital.co.uk/>

I don't understand the warning that this came from outside of Healthwise. Healthwise.org is our email server address and I received all mails there as I subscribed to this list.

From: Mark Audas [mailto:ma...@he...]
Sent: Monday, November 30, 2015 3:54 PM
To: dot...@li...
Subject: [dotNetRDF-Support] dotnetrdf and stardog 4.0

WARNING! The sender of this message may not be who they appear to be. Please be cautious with the content of this email and avoid clicking links or opening attachments. This message appears to be from a Healthwise employee but was sent from outside of Healthwise.
I'm running dotnetrdf 1.0.9.3683, VDS.Common.1.6.0, and Stardog 4.0.

Calling UpdateGraph I get the following error (this code worked with Stardog 1.x and dotnetrdf 1.0.7.x.

Error updating graph <xxx>:A HTTP error (HTTP 500 Internal Server Error) occurred while updating a Graph in the Store.
Empty response body, see aformentioned status line or the inner exception for further details.

Can you point me in the right direction to resolve this?

Many thanks,
Mark Audas

I'm running dotnetrdf 1.0.9.3683, VDS.Common.1.6.0, and Stardog 4.0.

Calling UpdateGraph I get the following error (this code worked with Stardog 1.x and dotnetrdf 1.0.7.x.

Error updating graph <xxx>:A HTTP error (HTTP 500 Internal Server Error) occurred while updating a Graph in the Store.
Empty response body, see aformentioned status line or the inner exception for further details.

Can you point me in the right direction to resolve this?

Many thanks,
Mark Audas

No there is no native implementation

You can however use one of the 3rd party supported stores such as Virtuoso
or Stardog which does support geospatial search.  I honestly don't know if
what they implement is GeoSPARQL or not

Rob

From:  fdhrtdfg dfgfdgfdfgf <tsi...@ya...>
Reply-To:  fdhrtdfg dfgfdgfdfgf <tsi...@ya...>, dotNetRDF User Help and
Support <dot...@li...>
Date:  Thursday, 26 November 2015 07:23
To:  "dot...@li..."
<dot...@li...>
Subject:  [dotNetRDF-Support] geosparql and dotnetrdf

> Hi,
> is any implementation for geosparql in dotnetrdf?
> I cant find anything....
> Do you know if exist other solution for geosparql?
> 
> Thanks
> 
> Best regards
> Billy
> ------------------------------------------------------------------------------
> Go from Idea to Many App Stores Faster with Intel(R) XDK Give your users
> amazing mobile app experiences with Intel(R) XDK. Use one codebase in this
> all-in-one HTML5 development environment. Design, debug & build mobile apps &
> 2D/3D high-impact games for multiple OSs.
> http://pubads.g.doubleclick.net/gampad/clk?id=254741551&iu=/4140______________
> _________________________________ dotNetRDF-Support mailing list
> dot...@li...
> https://lists.sourceforge.net/lists/listinfo/dotnetrdf-support

Hi,is any implementation for geosparql in dotnetrdf?I cant find anything....Do you know if exist other solution for geosparql?
Thanks
Best regardsBilly
Without seeing your configuration it is hard to say

Most likely the data is not in the default graph, try the following query
which will show you all the data including the graph it is in:

SELECT *
WHERE
{
  { ?s ?p ?o }
  UNION
  { GRAPH ?g { ?s ?p ?o } }
}

Rob

p.s. this is a subscription based list and your messages so far have been
manually moderated through, please subscribe at
https://lists.sourceforge.net/lists/listinfo/dotnetrdf-support if you wish
to continue asking questions

From:  Marija Vasileska <mar...@gm...>
Reply-To:  dotNetRDF User Help and Support
<dot...@li...>
Date:  Friday, 18 September 2015 13:58
To:  <dot...@li...>
Subject:  [dotNetRDF-Support] Sparql endpoint

> Hi,
> 
> Can you please help me in resolving my issue.
> 
> I have created SPARQL Endpoint following the guidelines on this link:
> https://bitbucket.org/dotnetrdf/dotnetrdf/wiki/UserGuide/ASP/Deploying%20with%
> 20rdfWebDeploy
> 
> This is the url of my SPARQL Endpoint:
> https://povrzani.net/sparql
> 
> I have rdf file set in App_Data folder, in this same folder I have config.ttl
> file. 
> When I try to execute simple query in the editor on this url:
> https://povrzani.net/sparql
> 
> PREFIX ex: <https://povrzani.net/>
> SELECT * WHERE { ?s ?o ?p}
> 
> I get no results.
> When I try to get results directly from rdf file from c#, there is no problem
> and I am getting results.
> 
> Please tell me if I am having some mistake in configuring my endpoint, or
> maybe something else is the problem.
> 
> Thank You in Advance,
> 
> Best Regards,
> Marija 
> ------------------------------------------------------------------------------
> _______________________________________________ dotNetRDF-Support mailing list
> dot...@li...
> https://lists.sourceforge.net/lists/listinfo/dotnetrdf-support

Hi,

Can you please help me in resolving my issue.

I have created SPARQL Endpoint following the guidelines on this link:
https://bitbucket.org/dotnetrdf/dotnetrdf/wiki/UserGuide/ASP/Deploying%20with%20rdfWebDeploy

This is the url of my SPARQL Endpoint:
https://povrzani.net/sparql

I have rdf file set in App_Data folder, in this same folder I have
config.ttl file.
When I try to execute simple query in the editor on this url:
https://povrzani.net/sparql

PREFIX ex: <https://povrzani.net/>
SELECT * WHERE { ?s ?o ?p}

I get no results.
When I try to get results directly from rdf file from c#, there is no
problem and I am getting results.

Please tell me if I am having some mistake in configuring my endpoint, or
maybe something else is the problem.

Thank You in Advance,

Best Regards,
Marija

Marija

I don't see that error when I go to the link provided

ManagedPipelineHandler is part of ASP.Net itself so implies something wrong
with your applications configuration unrelated to dotNetRDF

Rob

From:  Marija Vasileska <mar...@gm...>
Reply-To:  dotNetRDF User Help and Support
<dot...@li...>
Date:  Thursday, 10 September 2015 17:41
To:  <dot...@li...>
Subject:  [dotNetRDF-Support] SPARQL endpoint

> Hi,
> 
> Can you please tell me what might be the solution for my problem.
> 
> When I run locally on my machine, SPARQL endpoint works great, but when I
> deployed my application on web server it gives me this error:
> 
> HTTP Error 500.21 - Internal Server Error
> Handler "/sparql" has a bad module "ManagedPipelineHandler" in its module list
> 
> 
> You can see this error if you go to my application:
> 
> https://povrzani.net/sparql
> 
> 
> Thank You in advance,
>  
> Best Regards,
> Marija
> ------------------------------------------------------------------------------
> _______________________________________________ dotNetRDF-Support mailing list
> dot...@li...
> https://lists.sourceforge.net/lists/listinfo/dotnetrdf-support

Hi,

Can you please tell me what might be the solution for my problem.

When I run locally on my machine, SPARQL endpoint works great, but when I
deployed my application on web server it gives me this error:

HTTP Error 500.21 - Internal Server ErrorHandler "/sparql" has a bad module
"ManagedPipelineHandler" in its module list

You can see this error if you go to my application:

https://povrzani.net/sparql

Thank You in advance,

Best Regards,
Marija

Hi Rob,
Brilliant, thanks, I'll have a look.  I wasn't going to get to look at it for another few weeks, so this is a nice surprise.

Cheers,
Ash.

-----Original Message-----
From: Rob Vesse [mailto:rv...@do...] 
Sent: Wednesday, 29 July 2015 12:53 AM
To: dotNetRDF User Help and Support
Subject: [dotNetRDF-Support] FW: ReadWriteSparqlConnector OAuth authentication

Ashley

I have resolved this issue on the default branch and a 1.0.9 release with the fix is now available on NuGet

It exposes a protected virtual ApplyCustomRequestOptions() method on BaseEndpoint (and thus on both SparqlRemoteEndpoint and
SparqlRemoteUpdateEndpoint) so you can now extend both those classes and override that method to add the necessary custom OAuth headers to requests

Hope this allows you to resolve your issue,

Rob

>>
>>On 24/06/2015 06:51, "Noble, Ashley (AS01)" 
>><Ash...@ho...>
>>wrote:
>>
>>>Hi Rob,
>>>Thanks, when I get blocked by this in a few weeks I'll send a pull 
>>>request (or equivalent) if that works for you.
>>>
>>>As an aside, I tried to register on the issue tracker site to leave a 
>>>comment along those lines, but it didn't seem to register me.  Not 
>>>sure if register is working, or if it's just me.
>>>
>>>Cheers,
>>>Ash.
>>>
>>>-----Original Message-----
>>>Date: Mon, 15 Jun 2015 10:36:28 +0100
>>>From: Rob Vesse <rv...@do...>
>>>Subject: Re: [dotNetRDF-Support] ReadWriteSparqlConnector OAuth
>>>	authentication
>>>To: dotNetRDF User Help and Support
>>>	<dot...@li...>
>>>Message-ID: <D1A458C9.4E42A%rv...@do...>
>>>Content-Type: text/plain; charset="utf-8"
>>>
>>>Ash
>>>
>>>Right now you can't easily do this.
>>>
>>>Assuming you can encapsulate the logic to do the OAuth authentication 
>>>and get whatever tokens you need to add in the header then the best 
>>>way to do this would be to extend both SparlRemoteEndpoint and 
>>>SparlRemoteUpdateEndpoint.  Both of these provide a protected
>>>ApplyRequestOptions(HttpWebRequest) method (which they inherit from 
>>>the common base class BaseEndpoint) that you can override and modify 
>>>the HttpWebRequest as needed.
>>>
>>>Unfortunately this is currently not virtual so can't be overridden so 
>>>this approach won't work right now, I've filed CORE-448 [1] to track 
>>>this request
>>>
>>>The other approach you could use (but would require significantly 
>>>more
>>>effort) would be to create an IStorageProvider specifically for 
>>>BlazeGraph so you would have full control over the HTTP requests 
>>>being made but you'd have to implement a lot from scratch which I 
>>>assume is what you are trying to avoid if at all possible
>>>
>>>Rob
>>>
>>>[1] http://dotnetrdf.org/tracker/Issues/IssueDetail.aspx?id=448
>>>
>>>
>>>---------------------------------------------------------------------
>>>---
>>>-
>>>-
>>>----
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>>
>>
>>
>>
>

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