MediaWiki

Extension talk:LinkedWiki

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XML error: "Undeclared entity warning" at line 174 (parsing as UTF-8)

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Latest comment: 13 years ago2 comments2 people in discussion

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Hello. When I try a local query:

{{#sparql:select * where { ?x ?y ?z .} LIMIT 5|debug=yes}}

I can get this error: Error #sparql :Array


Also I could get the following data (touching some code for debugging):

=====LinkedWiki: Using ARC2_SPARQLXMLResultParser =====Linked wiki Error: Array ( 

   [0] => Array
       (
           [0] => XML error: "Undeclared entity warning" at line 174 (parsing as UTF-8)
       )

)

Can you give some line about that?

Thanks.

Fernando Carpani Fernando Carpani (talk) 23:11, 6 July 2011 (UTC)Reply
Hi I see only now your message :(
Sorry !
You can now use the google group : http://groups.google.com/group/linkedwiki
You are again this problem ?
Regards
Karima Karima Rafes 14:58, 1 October 2011 (UTC)Reply
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Unexpected non-MediaWiki exception while saving a page

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Latest comment: 13 years ago2 comments2 people in discussion

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Hello!
I get the follwing exception when I try to save a page to my wiki (MediaWiki 1.17,SMW 1.5.6, LinkedWiki 0.1.0, PHP 5.3.2). My sparql endpoint is local and works fine. 

Unexpected non-MediaWiki exception encountered, of type "Exception"
exception 'Exception' with message '0--
1--Error unknown.
' in /var/www/vhosts/..../extensions/LinkedWiki/lib/4store/SparqlTools.php:111
Stack trace:
#0 /var/www/vhosts/..../extensions/LinkedWiki/class/SMW_LinkedWikiStore.php(113): SparqlTools::insert('<http://example...', 'http://sci-clas...', 'http://sci-clas...', NULL)
#1 /var/www/vhosts/..../extensions/LinkedWiki/class/SMW_LinkedWikiStore.php(75): SMW_LinkedWikiStore->_update(Object(SMWSemanticData))
#2 /var/www/vhosts/..../extensions/SemanticMediaWiki/includes/SMW_ParseData.php(252): SMW_LinkedWikiStore->updateData(Object(SMWSemanticData))
#3 /var/www/vhosts/...../extensions/SemanticMediaWiki/includes/SMW_ParseData.php(406): SMWParseData::storeData(Object(ParserOutput), Object(Title), true)
#4 [internal function]: SMWParseData::onLinksUpdateConstructed(Object(LinksUpdate))
#5 /var/www/vhosts/..../includes/Hooks.php(158): call_user_func_array(Array, Array)
#6 /var/www/vhosts/..../includes/LinksUpdate.php(83): wfRunHooks('LinksUpdateCons...', Array)
#7 /var/www/vhosts/..../includes/Article.php(3646): LinksUpdate->__construct(Object(Title), Object(ParserOutput))
#8 /var/www/vhosts/..../includes/Article.php(2225): Article->editUpdates('{{#sparql:selec...', '', false, '20110708102128', 14, true)
#9 /var/www/vhosts/..../includes/Article.php(1976): Article->doEdit('{{#sparql:selec...', '', 98)
#10 /var/www/vhosts/.../includes/EditPage.php(1076): Article->updateArticle('{{#sparql:selec...', '', false, false, false, '')
#11 /var/www/vhosts/.../includes/EditPage.php(2656): EditPage->internalAttemptSave(false, false)
#12 /var/www/vhosts/.../includes/EditPage.php(415): EditPage->attemptSave()
#13 /var/www/vhosts/.../includes/EditPage.php(296): EditPage->edit()
#14 /var/www/vhosts/.../includes/Wiki.php(522): EditPage->submit()
#15 /var/www/vhosts/.../includes/Wiki.php(69): MediaWiki->performAction(Object(OutputPage), Object(Article), Object(Title), Object(User), Object(WebRequest))
#16 /var/www/vhosts/.../index.php(114): MediaWiki->performRequestForTitle(Object(Title), Object(Article), Object(OutputPage), Object(User), Object(WebRequest))
#17 {main}

But, even though I get this exeption, if I go back to my page, the queries are ok and the expected results are presented.
What'swrong?
Thank you in advance! 89.233.55.64 (talk) 10:40, 12 July 2011 (UTC)Reply

Well, it works if you put in comment the following line:
//$smwgDefaultStore = "SMW_LinkedWikiStore"; Anastasia 14:32, 14 July 2011 (UTC)
Hi
I see only now your message :(
Sorry !
You can now use the google group : http://groups.google.com/group/linkedwiki
Regards
Karima Karima Rafes 14:56, 1 October 2011 (UTC)Reply
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Statistics

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Latest comment: 13 years ago1 comment1 person in discussion

http://stats.grok.se/www.w/201111/Extension:LinkedWiki
http://stats.grok.se/www.w/201112/Extension:LinkedWiki
http://stats.grok.se/www.w/201201/Extension:LinkedWiki
http://stats.grok.se/www.w/201202/Extension:LinkedWiki
http://stats.grok.se/www.w/201203/Extension:LinkedWiki
http://stats.grok.se/www.w/201204/Extension:LinkedWiki
http://stats.grok.se/www.w/201205/Extension:LinkedWiki Karima Rafes (talk) 05:52, 10 December 2011 (UTC)Reply

Lien de téléchargement incorrect

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Latest comment: 12 years ago3 comments3 people in discussion

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Le lien de téléchargement de l'extension "https://github.com/BorderCloud/LinkedWiki/downloads" m'affiche un message d'erreur : "There aren’t any uploads for this repository."

Je pense l'avoir quand même récupéré avec le même lien (https://github.com/BorderCloud/LinkedWiki) et en cliquant sur le bouton "ZIP" pour charger les fichiers.

Cdt, Antoine Dubouis 164.131.224.225 (talk) 13:15, 8 March 2013 (UTC)Reply

Rydw i wedi cywiro'r ddolen. [[kgh]] (talk) 21:17, 8 March 2013 (UTC)Reply
C'est bon, Antoine ? Karima Rafes (talk) 10:56, 24 March 2013 (UTC)Reply
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Notice: Undefined index: Beschrijving in /var/www/wikifarm-mw1.19/extensions/LinkedWiki/LinkedWiki.php on line 283

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Latest comment: 11 years ago3 comments2 people in discussion

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When I do a query as follows 

{{#sparql:
PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>
PREFIX rdf:<http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX gemma:<http://model.i-catalogus.nl/gemma/>
PREFIX foaf:<http://xmlns.com/foaf/0.1/>
PREFIX purl:<http://purl.org/dc/terms/>
SELECT ?Softwareproduct  ?Naam ?Homepage ?WordtGeleverdDoor ?HomePageLeverancier ?Beschrijving
WHERE { ?Softwareproduct rdf:type gemma:SoftwareProduct .
        ?Softwareproduct rdfs:label ?Naam .
        ?Softwareproduct foaf:homepage ?Homepage .
        ?Softwareproduct gemma:wordtGeleverdDoor ?Leverancier .
        ?Leverancier rdfs:label ?WordtGeleverdDoor .
        ?Leverancier foaf:homepage ?HomePageLeverancier .
        ?Softwareproduct purl:description ?Beschrijving }
|endpoint=http://sparql.i-catalogus.nl/|headers=Softwareproduct, Geleverd door, Beschrijving|templates=ToonSoftwareproduct, ToonGeleverdDoor,ToonSoftwareproductBeschrijving}}

I get a notice like: 

Notice: Undefined index: Beschrijving in /var/www/wikifarm-mw1.19/extensions/LinkedWiki/LinkedWiki.php on line 283

This has probably something to do with empty values. If more cells are empty then the notice is repeated. Toine Schijvenaars (talk) 14:41, 30 August 2013 (UTC)Reply

Hi, I look it today. Karima Rafes (talk) 08:02, 7 September 2013 (UTC)Reply
The parser PHP (xml_parse function) said : Invalid character.
In the sparql result, there are strange characters in XML (start with e-) :
  <result>
   <binding name="Softwareproduct"><uri>http://model.i-catalogus.nl/gemma/SoftwareProduct/Liaan_e-Dienstverlening</uri></binding>
   <binding name="Naam"><literal>Liaan e-Dienstverlening</literal></binding>
   <binding name="Homepage"><literal>http://www.liaan.nl/produkten/produkt_info.php?id=22</literal></binding>
   <binding name="WordtGeleverdDoor"><literal>Liaan</literal></binding>
   <binding name="HomePageLeverancier"><literal>http://www.liaan.nl</literal></binding>
   <binding name="Beschrijving"><literal>Het product Liaan e-&#8;Dienstverlening is ontwikkeld om uw organisatie uitgebreid te ondersteunen bij het implementeren van digitale dienstverlening / e-Formulieren.
Met een abonnement op Liaan e-&#8;Dienstverlening beschikt u over alle benodigde middelen om e-&#8;Formulieren te ontwikkelen en te integreren in uw website en dus beschikbaar te stellen aan de inwoners van uw gemeente. 
Ook kunt u e-&#8;Producten beschikbaar stellen aan uw frontoffice (Servicecenter) of backoffice.
Het product beschikt over de noodzakelijke voorzieningen zoals DigiD ondersteuning (voorzien van de benodigde PKI&#8;Overheidscertificaten, voorinvulling (zoals GBA&#8;V, DKD) en (StuF)berichtenverkeer. 
Technische kennis is niet vereist, installatie niet nodig:
Liaan e-Dienstverlening wordt volledig gehost in onze e-&#8;loket.nl infrastructuur. Binnen deze infrastructuur beheert u al uw e-Formulieren met behulp van de zeer gebruiksvriendelijke webapplicatie e&#8;-Beheer.</literal></binding>
  </result>
You have to fix the format in your triplestore.
Bye. Karima Rafes (talk) 14:32, 7 September 2013 (UTC)Reply
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Result page Hyperlinks v2.1.0

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Latest comment: 10 years ago1 comment1 person in discussion

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I upgraded to version 2.1.0 and now the page hyperlinks are not available in the results. Is there a way to get them back? Legaulph (talk) 15:54, 6 December 2014 (UTC)Reply

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Download CSV with url in the results

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Latest comment: 8 years ago7 comments2 people in discussion

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I'm getting "<a href=“http://sitename/index.php/Special:URIResolver" with the page links in the results Legaulph (talk) 15:30, 24 October 2016 (UTC)Reply

It's probably an old version. Can you use the last version of this extension for your Wiki ? Karima Rafes (talk) 16:07, 24 October 2016 (UTC)Reply
Thanks for the quick response, I thought I had the latest version.
Now the query does not work correctly.
<!--TECHNOLOGY ROADMAP  END-->
<!--STANDARD CATEGORY BEGIN-->
{{#ifeq: {{{cat|}}} | Standard | 
{{#sparql:
PREFIX property:<http://server/index.php/Special:URIResolver/Property-3A>
PREFIX swivt:<http://semantic-mediawiki.org/swivt/1.0#>
PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
SELECT ?Name ?Owner ?Publication_Status ?Link 
WHERE
        {
            ?Link ?p ?cat .
            ?cat rdfs:label ?Category .
            ?cat rdfs:label "Standard" .
            FILTER(CONTAINS(STR(?cat), "Category")) .
            ?Link property:Has_Name ?Name .
            FILTER regex(?Name, "{{{standard|}}}", "i") .
            ?Link property:PublicationStatus ?Publication_Status .
            {{#if: {{{standard_owner|}}} | ?Link property:OwnedBy ?Owner . FILTER regex(?Owner, "{{{standard_owner|}}}", "i") .  | OPTIONAL { ?Link property:OwnedBy ?Owner .} }} 
            {{#if: {{{standard_contact|}}} | ?Link property:Contact ?Contact . FILTER regex(?Contact, "{{{standard_contact|}}}", "i") . | OPTIONAL { ?Link property:Contact ?Contact . } }} 
}
ORDER BY ?Name
LIMIT 1000000
|endpoint=http://server:8080/db1/sparql}}
 | }}
<!--STANDARD CATEGORY END-->
Error http_response_code: 200 Error message: Error parsing XML result:Not well-formed (invalid token) Response : {
This has been working fine until I'm trying to upgrade to mw 1.27, SMW 2.4.1
the display result was ok until I upgraded LinkedWiki just now, now I get the above error. Legaulph (talk) 17:03, 24 October 2016 (UTC)Reply
I have a new install of mediawiki 1.28.0
getting error
Notice: Undefined variable: wgResourceModules in /app/datamap/mw/extensions/LinkedWiki/LinkedWiki.php on line 72
Fatal error: Unsupported operand types in /app/datamap/mw/extensions/LinkedWiki/LinkedWiki.php on line 72 Legaulph (talk) 15:03, 7 December 2016 (UTC)Reply
Ok I look the problem this weekend.
Karima Karima Rafes (talk) 13:48, 8 December 2016 (UTC)Reply
wgResourceModules is not in the last version.
Can you test with the last version ?
I test your precedent query. (sorry I didn't see this message before)
It works with my database.
What is your database ? Probably, there is a problem of configuration.[1] If your database have a extern IP, I can try to test.
[1] https://www.mediawiki.org/wiki/Extension:LinkedWiki/Configuration
Bye
Karima Karima Rafes (talk) 19:49, 10 December 2016 (UTC)Reply
Undefined variable:
Is fixed now
For some reason this no longer works
{{#ifeq: {{{cat|}}} | Standard | 
{{#sparql:
PREFIX property:<http://server/index.php/Special:URIResolver/Property-3A>
PREFIX swivt:<http://semantic-mediawiki.org/swivt/1.0#>
PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
SELECT ?Name ?Owner ?Publication_Status ?Link 
WHERE
        {
            ?Link ?p ?cat .
            ?cat rdfs:label ?Category .
            ?cat rdfs:label "Standard" .
            FILTER(CONTAINS(STR(?cat), "Category")) .
            ?Link property:Has_Name ?Name .
            FILTER regex(?Name, "{{{standard|}}}", "i") .
            ?Link property:PublicationStatus ?Publication_Status .
            {{#if: {{{standard_owner|}}} | ?Link property:OwnedBy ?Owner . FILTER regex(?Owner, "{{{standard_owner|}}}", "i") .  | OPTIONAL { ?Link property:OwnedBy ?Owner .} }} 
            {{#if: {{{standard_contact|}}} | ?Link property:Contact ?Contact . FILTER regex(?Contact, "{{{standard_contact|}}}", "i") . | OPTIONAL { ?Link property:Contact ?Contact . } }} 
}
ORDER BY ?Name
LIMIT 1000000
|endpoint=http://server:8080/db1/sparql}}
 | }}
Legaulph (talk) 13:56, 13 December 2016 (UTC)Reply
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Query not working in MW 1.28.0

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Latest comment: 8 years ago8 comments3 people in discussion

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I'm running some more test and have come up with this issue. I have for a current versions 

MediaWiki 1.25.5
Semantic MediaWiki 2.3
Page Forms 4.0.2-alpha
LinkedWiki	2.1.0 alpha 1

Query that works in these versions 

{{#sparql:
PREFIX property:<http://server.com/index.php/Special:URIResolver/Property-3A>
PREFIX swivt:<http://semantic-mediawiki.org/swivt/1.0#>
PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
SELECT ?supported_by ?Subcategory ?name ?version ?technology_name ?owner ?contact ?publication_date ?publication_status ?support_status ?manufacturer ?start_date ?end_date
WHERE 
{
 ?s ?p ?sub .
            ?cat rdfs:label ?Category .
            ?cat rdfs:label "Technology" .
            FILTER(CONTAINS(STR(?cat), "Category")) .
            ?sub rdfs:subClassOf ?cat .
            ?sub rdfs:label ?Subcategory .
 ?s property:Has_Name ?name .
  ?s property:Has_subobject ?subobject .
  ?subobject property:Has_Version ?version .
  ?subobject property:Technology_Name ?technology_name .
  ?subobject property:Has_Support_Status ?support_status .
  ?subobject property:Has_Start_Date ?start_date .
   ?subobject property:Has_End_Date ?end_date .
   ?subobject property:Supported_By ?supported_by .
    ?s property:OwnedBy ?owner.
    ?s property:PublicationDate ?publication_date .
    ?s property:PublicationStatus ?publication_status .
    ?s property:ManufacturedBy ?manufacturer.
  OPTIONAL {
    ?s property:Contact ?contact.
  }
}
ORDER BY ?name
LIMIT 1000000
|endpoint=http://server:8080/dev/sparql}}

Does not work in these versions: 

MediaWiki 1.28.0
Semantic MediaWiki 2.4.4
Page Forms 4.0.2-alpha
LinkedWiki	3.0.0 Alpha (bec49e4)

} ORDER BY ?name LIMIT 10 Error endpoint: http://server:8080/db1/sparql Error http_response_code: 200 Error message: Error parsing XML result:Not well-formed (invalid token) Response : { Legaulph (talk) 13:28, 15 December 2016 (UTC)Reply

What is the name and the version of your database ? It's the same version between the two tests ?
Can you execute this command ?
./sparql/query -v -d -r -e http://server:8080/dev/sparql -f yourQuery.rq
I think your database sends a json and not a XML.
I need to check if the parameter accept=application/sparql-results+xml is in the HTTP's header. This command can print the header in the log. (I think...)
Thanks
Karima Karima Rafes (talk) 16:48, 15 December 2016 (UTC)Reply
Yes the same version and actually the same server
Apache Jena Fuseki
Version 2.3.0. Legaulph (talk) 19:27, 15 December 2016 (UTC)Reply
Ok I found the problem.
I disabled an old fix for Fuseki. I thought this difference in the protocol was from the past but the problem of content negotiation is always present.
Sorry. Now, you can download the last version in the master.
Karima Karima Rafes (talk) 20:25, 17 December 2016 (UTC)Reply
Thank you 148.177.1.212 (talk) 18:32, 20 December 2016 (UTC)Reply
Hi Karima,
Maybe I'm doing something wrong
Still getting the error:
Error http_response_code: 200 Error message: Error parsing XML result:Not well-formed (invalid token) Response :
Query is a simple one
{{#sparql:
PREFIX property:<http://server.com/index.php/Special:URIResolver/Property-3A>
PREFIX swivt:<http://semantic-mediawiki.org/swivt/1.0#>
PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
SELECT ?name 
WHERE 
{
?s property:Has_Name ?name .
}
LIMIT 15
|endpoint=http://server.com:8080/ds/sparql}}
}}
I have added to the extension.json
        "http://server.com": {
        "endpoint": "http://server.com:8080/ds/sparql",
        "typeRDFDatabase": "fuseki",
        "HTTPMethodForQuery": "GET"
      },
Legaulph (talk) 12:43, 21 December 2016 (UTC)Reply
Have you update the extension ?
You can check if you have the last version in the file : endpoint.php
See the last update in the file endpoint
If you want to do a query with your configuration in the file extension.json, you can write :
{{#sparql:
select * where 
 { ?x ?y ?z . } 
LIMIT 15
|config=http://server.com
}}
(the special page : SPARQL editor helps to test your configuration)
Bye Karima Rafes (talk) 13:29, 21 December 2016 (UTC)Reply
I had to remove
"typeRDFDatabase": "fuseki",
Thanks Legaulph (talk) 13:41, 21 December 2016 (UTC)Reply
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Exception encountered, of type "ConfigException"

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Latest comment: 8 years ago3 comments2 people in discussion

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We get an error about media wiki not beeing able to find the configuration parameters as expected, when saving a page

Exception encountered, of type "ConfigException" 

[31907a3f] /index.php?title=…&action=submit   ConfigException from line 53 of /srv/www/…/includes/config/GlobalVarConfig.php:    GlobalVarConfig::get: undefined option: 'endpointDefault'
Backtrace:
#0 /srv/www/…/extensions/LinkedWiki/parser/SparqlParser.php(29): GlobalVarConfig->get(string)
#1 [internal function]: SparqlParser::render(Parser, string, string)
…

We get a similar error for the Special:LinkedWikiConfig page just with: 

…
[90d212b0] /Special:LinkedWikiConfig   ConfigException from line 53 of /srv/www/…/includes/config/GlobalVarConfig.php: GlobalVarConfig::get: undefined option: 'endpoint'
…

We have the extension.json at its original place. 2001:638:902:200B:3C29:9F63:C644:4361 (talk) 15:56, 21 February 2017 (UTC)Reply

It is MediaWiki 1.25.2 and LinkedWiki Extension 3.0.0 Alpha 2001:638:902:200B:3C29:9F63:C644:4361 (talk) 16:00, 21 February 2017 (UTC)Reply
By default the endpointDefault is "http://www.wikidata.org". If you change this value, you need to insert, a new endpoint in the list. For exemple :
"endpointDefault": "http://myendpoint.org",
So in list of endpoints, you have to add your default endpoint (with the good config ) :
"endpoint": {
...
   "http://myendpoint.org": {
    "isReadOnly": true,
...
        "endpoint": "http://myendpoint.org/sparql",
...
        "storageMethodClass": "SimpleStorageMethod"
      },
}
If you have again a problem: send me a copy of you extension.json by email to karima.rafes@gmail.com
Bye
Karima Karima Rafes (talk) 16:34, 21 February 2017 (UTC)Reply
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Installation break properties

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Latest comment: 8 years ago3 comments3 people in discussion

MediaWiki 1.28.0

PHP 5.6.28 (fpm-fcgi)

MySQL 5.6.34

ICU 52.1

Lua 5.1.5

Page Forms 4.1 (22cc121) 15:25, 9 March 2017

Semantic MediaWiki 2.5.0

When I install LinkedWiki (v3.0.0), all of the links in Special:Properties turn red and no new properties show up in Special:Properties upon creation with Special:CreateProperty. As soon as I remove wfLoadExtension( 'LinkedWiki' ); from LocalSettings, the properties work again... Gstupp (talk) 18:53, 16 March 2017 (UTC)Reply

See https://phabricator.wikimedia.org/T160665 Karima Rafes (talk) 08:58, 17 March 2017 (UTC)Reply
I believe that the solution should somehow also be documented on the extensions page. [[kgh]] (talk) 10:30, 19 March 2017 (UTC)Reply

Upgrading MW1.3.0 and SMW2.5.5

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Latest comment: 7 years ago11 comments2 people in discussion

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Product Version 

MediaWiki	1.30.0 
PHP	7.1.8 (apache2handler) 
MySQL	5.6.34-log 
Semantic MediaWiki	2.5.5 
LinkedWiki --> 3.1.1
Apache Jena Fuseki 2.5.0

Using the same query as previous post
I get no results
{{#sparql:
PREFIX property:<http://server.com/index.php/Special:URIResolver/Property-3A>
PREFIX swivt:<http://semantic-mediawiki.org/swivt/1.0#>
PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
SELECT ?supported_by ?Subcategory ?name ?version ?technology_name ?owner ?contact ?publication_date ?publication_status ?support_status ?manufacturer ?start_date ?end_date
WHERE 
{
 ?s ?p ?sub .
            ?cat rdfs:label ?Category .
            ?cat rdfs:label "Technology" .
            FILTER(CONTAINS(STR(?cat), "Category")) .
            ?sub rdfs:subClassOf ?cat .
            ?sub rdfs:label ?Subcategory .
 ?s property:Has_Name ?name .
  ?s property:Has_subobject ?subobject .
  ?subobject property:Has_Version ?version .
  ?subobject property:Technology_Name ?technology_name .
  ?subobject property:Has_Support_Status ?support_status .
  ?subobject property:Has_Start_Date ?start_date .
   ?subobject property:Has_End_Date ?end_date .
   ?subobject property:Supported_By ?supported_by .
    ?s property:OwnedBy ?owner.
    ?s property:PublicationDate ?publication_date .
    ?s property:PublicationStatus ?publication_status .
    ?s property:ManufacturedBy ?manufacturer.
  OPTIONAL {
    ?s property:Contact ?contact.
  }
}
ORDER BY ?name
LIMIT 1000000
|endpoint=http://server:8080/dev/sparql}}
Legaulph (talk) 13:04, 18 January 2018 (UTC)Reply
You can test your query via the SPARQL editor (special page).
Extension:LinkedWiki/SPARQL editor
Or you can see the problem in the page with the log level. Karima Rafes (talk) 13:22, 18 January 2018 (UTC)Reply
I tried | log=2 and nothing returns.
Extension:LinkedWiki/SPARQL editor: does not exist in my wiki 
Sparql Flint editor gives: Flint Error -> Classes cannot be retrieved. HTTP Status: 0,
RDF test cases gives error: RDFUnit is not installed.
Then I tried Sparql Query interface and get:
Array ( [0] => Error query : PREFIX property: PREFIX swivt: PREFIX rdfs: PREFIX xsd: SELECT ?supported_by ?Subcategory ?name ?version ?technology_name ?owner ?contact ?publication_date ?publication_status ?support_status ?manufacturer ?start_date ?end_date WHERE { ?s ?p ?sub . ?cat rdfs:label ?Category . ?cat rdfs:label "Technology" . FILTER(CONTAINS(STR(?cat), "Category")) . ?sub rdfs:subClassOf ?cat . ?sub rdfs:label ?Subcategory . ?s property:Has_Name ?name . ?s property:Has_subobject ?subobject . ?subobject property:Has_Version ?version . ?subobject property:Technology_Name ?technology_name . ?subobject property:Has_Support_Status ?support_status . ?subobject property:Has_Start_Date ?start_date . ?subobject property:Has_End_Date ?end_date . ?subobject property:Supported_By ?supported_by . ?s property:OwnedBy ?owner. ?s property:PublicationDate ?publication_date . ?s property:PublicationStatus ?publication_status . ?s property:ManufacturedBy ?manufacturer. OPTIONAL { ?s property:Contact ?contact. } } ORDER BY ?name LIMIT 1000000 |endpoint=http://awsacrnva1061.jnj.com:8080/dev/sparql}} Error endpoint: Error http_response_code: 0 Error message: Error number: 3 Error message: malformed [1] => Error query : PREFIX property: PREFIX swivt: PREFIX rdfs: PREFIX xsd: SELECT ?supported_by ?Subcategory ?name ?version ?technology_name ?owner ?contact ?publication_date ?publication_status ?support_status ?manufacturer ?start_date ?end_date WHERE { ?s ?p ?sub . ?cat rdfs:label ?Category . ?cat rdfs:label "Technology" . FILTER(CONTAINS(STR(?cat), "Category")) . ?sub rdfs:subClassOf ?cat . ?sub rdfs:label ?Subcategory . ?s property:Has_Name ?name . ?s property:Has_subobject ?subobject . ?subobject property:Has_Version ?version . ?subobject property:Technology_Name ?technology_name . ?subobject property:Has_Support_Status ?support_status . ?subobject property:Has_Start_Date ?start_date . ?subobject property:Has_End_Date ?end_date . ?subobject property:Supported_By ?supported_by . ?s property:OwnedBy ?owner. ?s property:PublicationDate ?publication_date . ?s property:PublicationStatus ?publication_status . ?s property:ManufacturedBy ?manufacturer. OPTIONAL { ?s property:Contact ?contact. } } ORDER BY ?name LIMIT 1000000 |endpoint=http://server.com:8080/dev/sparql}} Error endpoint: Error http_response_code: 200 Error message: Error parsing XML result:Invalid document end Response : )
Legaulph (talk) 14:24, 18 January 2018 (UTC)Reply
I also get this [WmCwqj5oEE9sAnCYT03MSgAAAAo] 2018-01-18 14:35:23: Fatal exception of type "Exception" Legaulph (talk) 14:35, 18 January 2018 (UTC)Reply
RDFUnit is experimental for the moment. It's disable by default.
You need to re-install the extension. There are missing files.
Upload files here (backup before your precedent extension.json) :
Special:ExtensionDistributor/LinkedWiki Karima Rafes (talk) 14:36, 18 January 2018 (UTC)Reply
I don't see the special page SPARQL Editor Legaulph (talk) 16:02, 18 January 2018 (UTC)Reply
Found it Legaulph (talk) 16:03, 18 January 2018 (UTC)Reply
Results are the same Legaulph (talk) 16:09, 18 January 2018 (UTC)Reply
Sorry I cannot test your endpoint but it works on my wiki with the same configuration.
http://daap.eu/wiki/User:Karima_Rafes Karima Rafes (talk) 16:45, 18 January 2018 (UTC)Reply
Hi Karima,
Thank you for your help I was missing some things and also had a typo.
Everything is working now. Legaulph (talk) 14:27, 19 January 2018 (UTC)Reply
Great ! Bye. Karima Rafes (talk) 14:29, 19 January 2018 (UTC)Reply
The discussion above is closed. Please do not modify it. No further edits should be made to this discussion.

query with LIMIT 7500

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Latest comment: 7 years ago6 comments2 people in discussion

I get error: 

Category: Pages where template include size is exceeded.
Is there a way to get more results?

Thanks Legaulph (talk) 13:26, 21 January 2018 (UTC)Reply
May be with the parameter cache. You can disable the cache with the cache parameter.
An example :
{{#sparql:select * where { ?x ?y ?z . } LIMIT 5|endpoint=https://query.wikidata.org/sparql|cache=no}}
Else this probably a limit in the options of Mediawiki.
Another solution (in last version), your can use a visualization with datatable. The page will be in cache but the navigator will send the query at each time (and without limit).
{{#sparql: select * where { ?x ?y ?z . } LIMIT 15 |endpoint=https://query.wikidata.org/sparql |chart=bordercloud.visualization.DataTable |options=width=100%!height=500px }} Karima Rafes (talk) 17:02, 21 January 2018 (UTC)Reply
It is a MediaWiki issue.
is there a way to get the display LIMIT 15 and the csv to export everything? Legaulph (talk) 11:20, 22 January 2018 (UTC)Reply
The export in csv is different between databases. For the moment, I convert the HTML table in CSV.
You can make a template with a link with good parameters for your database.
If you want generate a link/request by this extension, you can propose a feature and share your link for your database (for example) in the project:
https://phabricator.wikimedia.org/tag/mediawiki-extensions-linkedwiki/
(the database has always a limit. This new feature has to use limit and offset in a script php or javascript) Karima Rafes (talk) 12:59, 22 January 2018 (UTC)Reply
Adding this feature would be greate.
The option to preview - limit 15,
download full results in csv, json, rdf.
I do not have access to fabricator to request these features. Legaulph (talk) 14:02, 22 January 2018 (UTC)Reply
You can login you with your account mediawiki. Karima Rafes (talk) 16:18, 22 January 2018 (UTC)Reply

Fatal exception of type "MWException"

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Latest comment: 6 years ago5 comments3 people in discussion
Product Version
MediaWiki 1.30.0
PHP 7.1.8 (apache2handler)
MySQL 5.6.34-log
Semantic MediaWiki 2.5.5
LinkedWiki --> 3.1.1
Apache Jena Fuseki 2.5.0
I'm seeing this error

/* [WmSRZ1TLdhLyhXELv3urDAAAAAg] 2018-01-21 13:11:03: Fatal exception of type "MWException"

  • /

if (window.console && console.error) {console.error("[WmSRZ1TLdhLyhXELv3urDAAAAAg] 2018-01-21 13:11:03: Fatal exception of type \"MWException\"");} mw.loader.implement("ext.LinkedWiki.SparqlParser@0y9y0vq",function($,jQuery,require,module){$(document).ready(function(){sgvizler2.containerDrawAll({googleApiKey:googleApiKey,osmAccessToken:osmAccessToken,path:mw.config.get('wgScriptPath')+"/extensions/LinkedWiki/node_modules/sgvizler2/build/browser"});});}); mw.loader.state({"ext.LinkedWiki.sgvizler2":"error"}); Legaulph (talk) 11:16, 29 January 2018 (UTC)Reply

Have you insert your keys in the file keys.js ? Karima Rafes (talk) 15:38, 29 January 2018 (UTC)Reply
Can I disable the google maps sense I don't use it? Legaulph (talk) 13:43, 12 March 2018 (UTC)Reply
Normally, sgvizler2 downloads only libs used by the charts in the page. If you don't want use Google and OSM Map, you have always this error ? Karima Rafes (talk) 15:05, 12 March 2018 (UTC)Reply
Is it correct that if you don't want to use Google and OSM, you just set the keys to null? Leaving them commented out gives this error. Josephguillaume (talk) 11:19, 20 January 2019 (UTC)Reply

Warnings when running 'yarn install --production=true'

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Latest comment: 6 years ago4 comments2 people in discussion

Using

  • Debian GNU/Linux 9.5
  • Mediawiki 1.31.0
  • LinkedWiki 3.1.1
  • https://nodejs.org/en/10.7.0
  • yarn 1.7.0
  • Composer version 1.6.5 2018-05-04 11:44:59
$ yarn install --production=true
yarn install v1.7.0
info No lockfile found.
[1/4] Resolving packages...
⠁ (node:18055) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
warning grunt > coffee-script@1.10.0: CoffeeScript on NPM has moved to "coffeescript" (no hyphen)
warning grunt-jsonlint > jsonlint > nomnom@1.8.1: Package no longer supported. Contact support@npmjs.com for more info.
[2/4] Fetching packages...
[3/4] Linking dependencies...
warning " > bootstrap@4.1.2" has unmet peer dependency "jquery@1.9.1 - 3".
[4/4] Building fresh packages...
success Saved lockfile.
Done in 1.35s.

----

How to resolve these warnings? Will the LinkedWiki work or be broken if these warnings are not resolved? Jukeboksi (talk) 20:01, 23 July 2018 (UTC)Reply

Only the special page "SPARQL editor" works with boostrap. It is "experimental". It works correctly with Chrome but I didn't test with other navigators :-/
I will try to resolve these problems at the next update of the special page. Karima Rafes (talk) 21:18, 23 July 2018 (UTC)Reply
I did the following:
yarn add jquery # dependency of bootstrap
yarn add popper.js # dependency of bootstrap
yarn add bootstrap@4.1.2
yarn install --production=true
Should the SPARQL editor work now? Jukeboksi (talk) 10:10, 24 July 2018 (UTC)Reply
I didn't test with these version. (JQuery is already in Mediawiki)
Say me if you see a bug. Karima Rafes (talk) 20:36, 25 July 2018 (UTC)Reply

SPARQL query inside Lua module

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Latest comment: 5 years ago4 comments2 people in discussion

Hi. I want to know how to make a SPARQL query, from a Lua module, if it is possible. I read Extension:LinkedWiki/lua but it says nothing about that. Thanks. --Tinker Bell ★ ♥ 20:52, 2 December 2019 (UTC)Reply

Hello
For the moment, it's not possible but it's simple to insert this new function.
For SPARQL select and update ? Karima Rafes (talk) 09:24, 3 December 2019 (UTC)Reply
I just want to make a query to Wikidata from my own wiki. --Tinker Bell ★ ♥ 05:35, 5 December 2019 (UTC)Reply
I will develop this feature at the next update (6-12 months) or you can send me the code. Karima Rafes (talk) 14:09, 8 December 2019 (UTC)Reply

Trying to upgrade to mediawiki 1.34.0

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Latest comment: 5 years ago3 comments1 person in discussion
RESOLVED
Update template in chef scripts

The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

MediaWiki 1.33.2
PHP 7.1.30 (apache2handler)
MySQL 5.6.10
Semantic MediaWiki 3.1.3
installed the latest Linked wiki
/index.php?title=Special:UserLogin&returnto=Main+Page&returntoquery= MWException from line 183 of includes/MagicWord.php: Error: invalid magic word 'sparql'
Trying to install yarn:
Error: Package: yarn-1.21.1-1.noarch (yarn)
          Requires: nodejs Legaulph (talk) 12:30, 4 February 2020 (UTC)Reply
OK
I have installed MediaWiki 1.33.2 and ran update.php
I was able to install yarn and follow the install procedure. Legaulph (talk) 18:58, 4 February 2020 (UTC)Reply
I found the issue, has to do with chef scripts I use Legaulph (talk) 12:02, 6 February 2020 (UTC)Reply
The discussion above is closed. Please do not modify it. No further edits should be made to this discussion.

No visualization for pictures available

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Latest comment: 5 years ago6 comments2 people in discussion
RESOLVED
The parameter options can be use to visualize pictures, videos, etc.

Example, here for pictures in the column[2] : 

{{#sparql:PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 
PREFIX pq: <http://www.wikidata.org/prop/qualifier/>
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX wd: <http://www.wikidata.org/entity/> 

SELECT DISTINCT ?nobelLabel  ?winnerLabel ?image WHERE {
  ?winner wdt:P31 wd:Q5 ;
          wdt:P18 ?image ;
          wdt:P166 ?nobel .
  ?nobel wdt:P279 wd:Q7191 .
  ?winner p:P166 ?statement .
  ?statement pq:P585 ?when .
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
  
  FILTER(YEAR(?when) = 2019)
} 
ORDER BY DESC(?year) ?nobelLabel ?winnerLabel
limit 100
| endpoint = https://query.wikidata.org/sparql
| chart=bordercloud.visualization.DataTable
| options=colstyle=col2_img_max-width:175px;
| log=2
}}

Doc :

https://bordercloud.github.io/sgvizler2/tutorial-bordercloud_visualization_DataTable.html

The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

No visualization for pictures in version 3.3.7 available, DataTable or Google Table show the URL's only. Would it be possible in future versions? S0ring (talk) 14:50, 5 March 2020 (UTC) It works in this version but there is still work to improve ergonomics.Reply

You can test with this query : 


{{#sparql:PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 
PREFIX pq: <http://www.wikidata.org/prop/qualifier/>
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX wd: <http://www.wikidata.org/entity/> 

SELECT DISTINCT ?nobelLabel  ?winnerLabel ?image WHERE {
  ?winner wdt:P31 wd:Q5 ;
          wdt:P18 ?image ;
          wdt:P166 ?nobel .
  ?nobel wdt:P279 wd:Q7191 .
  ?winner p:P166 ?statement .
  ?statement pq:P585 ?when .
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
  
  FILTER(YEAR(?when) = 2019)
} 
ORDER BY DESC(?year) ?nobelLabel ?winnerLabel
limit 100
| endpoint = https://query.wikidata.org/sparql
| chart=bordercloud.visualization.DataTable
| options=colstyle=col2_img_max-width:175px;
| log=2
}}

source : https://linkedwiki.com/query/List_of_Nobel_Prize_2019

Documentation with DataTable : https://bordercloud.github.io/sgvizler2/tutorial-bordercloud_visualization_DataTable.html

Bye Karima Rafes (talk) 15:32, 5 March 2020 (UTC)Reply

Great, your example works! But if you add a new column, it won't work:
SELECT DISTINCT ?nobelLabel  ?winnerLabel ?gndid ?image WHERE {
  ?winner wdt:P31 wd:Q5 ;
         wdt:P18 ?image ;
         wdt:P166 ?nobel ;
         wdt:P227 ?gndid.
  ?nobel wdt:P279 wd:Q7191 .
  ?winner p:P166 ?statement .
  ?statement pq:P585 ?when .
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
 
  FILTER(YEAR(?when) = 2019)
}
ORDER BY DESC(?year) ?nobelLabel ?winnerLabel S0ring (talk) 16:37, 5 March 2020 (UTC)Reply
You must to change the column in the options if you change the output.
In my request, image is in the column 2 :
options=colstyle=col2_img_max-width:175px;
In your request, image is in the column 3 :
options=colstyle=col3_img_max-width:175px; Karima Rafes (talk) 17:01, 5 March 2020 (UTC)Reply
Thank you Karima! Great extension! S0ring (talk) 12:03, 6 March 2020 (UTC)Reply
Thanks !
Bye ;) Karima Rafes (talk) 12:32, 6 March 2020 (UTC)Reply
The discussion above is closed. Please do not modify it. No further edits should be made to this discussion.

LinkedWiki vs. SparqlCharts

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Latest comment: 5 years ago2 comments2 people in discussion

The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

Does Extension:LinkedWiki suppose to replace Extension:SparqlCharts? Which differences exist between these extensions? S0ring (talk) 12:31, 6 March 2020 (UTC)Reply

Each extension has its own life.
Differences : a lot of features...
You can read the list of features, here : https://www.mediawiki.org/wiki/Extension:LinkedWiki
If you want add a new visualization, you can propose it here : https://github.com/BorderCloud/sgvizler2 Karima Rafes (talk) 12:50, 6 March 2020 (UTC)Reply
The discussion above is closed. Please do not modify it. No further edits should be made to this discussion.

Query page using linked wiki

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Latest comment: 5 years ago27 comments2 people in discussion

MediaWiki 1.31.6 

PHP 7.3.15 (cgi-fcgi)
MySQL 5.6.41-log
LinkedWiki 3.3.7

I have Pageforms query form That I have been using for some time. after upgrade, The query works, however the links are bad know. 

I get:  server.comClient_Firewall/TS-2DRoadmap
it should be: server.com/wiki/Client_Firewall/TS-Roadmap

{{#ifeq: {{{cat|}}} | Technology | 
{{#sparql:
PREFIX property:<server.comProperty-3A>
PREFIX swivt:<http://semantic-mediawiki.org/swivt/1.0#>
PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
SELECT ?Name ?Owner ?Publication_Status ?Start_Date ?End_Date ?Status ?Link
WHERE
        {
            ?Link property:Has_parent_page ?parent.
            ?parent property:PublicationStatus ?Publication_Status .
            ?Link property:Has_subobject ?Subobject .
            ?Subobject property:Technology_Name ?Name .
            ?Subobject property:Has_Start_Date ?Start_Date .
            OPTIONAL {
            ?Subobject property:Has_End_Date ?End_Date .
            }
            ?Subobject property:Has_Support_Status ?Status .
            OPTIONAL {
             ?parent ?p ?sub .
             ?cat rdfs:label ?Category .
             FILTER(CONTAINS(STR(?cat), "Category")) .
             ?sub rdfs:subClassOf ?cat .
             ?sub rdfs:label ?Subcategory .
            }
            {{#ifeq: {{{subcategory|}}} | all | | FILTER regex(?Subcategory, "{{{subcategory|}}}", "i") . }}
            {{#if:{{{tech|}}} | FILTER regex(?Name, "{{{tech|}}}", "i") . }}
            {{#if:{{{tech_owner|}}} | ?Link property:OwnedBy ?Owner . FILTER regex(?Owner, "{{{tech_owner|}}}", "i") . |  OPTIONAL { ?Link property:OwnedBy ?Owner . } }}
            {{#if: {{{tech_contact|}}} | ?Link property:Contact ?Contact . FILTER regex(?Contact, "{{{tech_contact|}}}", "i") . |  }} 
            {{#if: {{{manufactured|}}} | ?parent property:ManufacturedBy ?Manufacturer . FILTER regex(?Manufacturer, "{{{manufactured|}}}", "i") .  | }}
           {{#ifeq: {{{status|}}} | all | | FILTER regex(?Status, "{{{status|}}}", "i") . }}
             {{#ifeq: {{{support|}}} | all | | ?Subobject property:Supported_By ?Support . FILTER regex(?Support, "{{{support|}}}", "i") . }}
}
ORDER BY ?Name ?End_Date
LIMIT 100000
|endpoint=http://serverendpoint.com/sparql}}
 | }}

Legaulph (talk) 12:14, 18 March 2020 (UTC)Reply

Hi,
Can you reproduce the bug in this form ?
https://linkedwiki.com/queryInsertUpdate.php Karima Rafes (talk) 12:30, 18 March 2020 (UTC)Reply
It's on a private network.
Legaulph (talk) 12:37, 18 March 2020 (UTC)Reply
You can also try to reproduce it in the form of your SPARQL service. Karima Rafes (talk) 12:39, 18 March 2020 (UTC)Reply
I'm not sure what you mean. I'm not that fluent in SPARQL. Legaulph (talk) 13:20, 18 March 2020 (UTC)Reply
The data is not modified by the extension. You must verify that the data is correct in your database.
select distinct ?link where { ?link property:Has_subobject ?Subobject . } Karima Rafes (talk) 13:25, 18 March 2020 (UTC)Reply
I'm using short urls. The SPARQL Query at my endpoint are not adding /wiki/ and leaving out the / before the page name. However when I run the ask query it does bring back the correct link.
I don't know what that means and maybe I should post the question on SMW site?
Legaulph (talk) 14:50, 18 March 2020 (UTC)Reply
If SMW saves your wiki, it's probably a problem with the SMW's configuration. Karima Rafes (talk) 14:54, 18 March 2020 (UTC)Reply
I check LinkedWiki configuration and this error shows:
[514eb7f4c34734ca0fec92cf] /wiki/Special:LinkedWikiConfig Error from line 29 of D:\xampp\htdocs\mediawiki\extensions\LinkedWiki\specialpages\SpecialLinkedWikiConfig.php: Call to undefined method OutputPage::addWikiTextAsInterface()
Backtrace:
#0 D:\xampp\htdocs\mediawiki\includes\specialpage\SpecialPage.php(565): SpecialLinkedWikiConfig->execute(NULL)
#1 D:\xampp\htdocs\mediawiki\includes\specialpage\SpecialPageFactory.php(568): SpecialPage->run(NULL)
#2 D:\xampp\htdocs\mediawiki\includes\MediaWiki.php(288): SpecialPageFactory::executePath(Title, RequestContext)
#3 D:\xampp\htdocs\mediawiki\includes\MediaWiki.php(861): MediaWiki->performRequest()
#4 D:\xampp\htdocs\mediawiki\includes\MediaWiki.php(524): MediaWiki->main()
#5 D:\xampp\htdocs\mediawiki\index.php(42): MediaWiki->run()
#6 {main}
Legaulph (talk) 12:55, 20 March 2020 (UTC)Reply
Can you compare your old settings with the new template extension.json ?
https://github.com/wikimedia/mediawiki-extensions-LinkedWiki/blob/master/extension.json Karima Rafes (talk) 14:19, 20 March 2020 (UTC)Reply
MediaWiki 1.31.1
PHP 7.1.30 (apache2handler)
MySQL 5.6.10
Semantic MediaWiki 2.5.8
CirrusSearch 0.2 (ad9a0d9) 16:24, 17 April 2018
Elastica 1.3.0.0 (7019d96) 20:49, 13 April 2018
This configuration was very different
This was in the old configuration and it had fuseki instead of virtuoso. I added it below the example. still get the same error
"http://server.com": {
"isReadOnly": true,
"typeRDFDatabase": "virtuoso",
"endpoint": "http://server.com/sparql",
"HTTPMethodForRead": "GET"
} Legaulph (talk) 16:31, 20 March 2020 (UTC)Reply
Is it blocking?
Otherwise the other features work? Karima Rafes (talk) 16:45, 20 March 2020 (UTC)Reply
For virtuoso, try only :
"http://server.com": {
"isReadOnly": true,
"endpointRead": "http://server.com/sparql",
} Karima Rafes (talk) 17:13, 20 March 2020 (UTC)Reply
I see the error : it's now endpointRead and not only endpoint. Karima Rafes (talk) 17:14, 20 March 2020 (UTC)Reply
Other features work, and the queries work other than the links are bad. Still get the error on the LinkedWiki configuration page.
SPARQL Flint editor gives the error: Classes cannot be retrieved. HTTP Status: 0,
SPARQL Editor seems fine Legaulph (talk) 10:45, 21 March 2020 (UTC)Reply
Ok thanks.
I think :
- for the bad links, you need to check saved IRIs in your database (open the page http://server.com/sparql and test the SPARQL query "select distinct ?link where { ?link property:Has_subobject ?Subobject . }"). If your IRIs are false in your database, you have to change your settings of Mediawiki and/or SMW to generate the good links (and save/clean your database before each test).
- for Fint editor, you need to precise your endpoint manually (it's a old editor)
- for the LinkedWiki configuration page, it's a problem of version. You need to install Mediawiki 1.33.1+. The function addWikiTextAsInterface not exists before 1.32. Karima Rafes (talk) 11:18, 21 March 2020 (UTC)Reply
OK I needed to update enableSemantics( 'example.org/wiki/', true ); fixed most of the issues. why id the link "-" changed to "-2D"
exampl.org/wiki/Client_Firewall/TS-2DRoadmap the actual link shows like this now. https://exampl.org/wiki/Special:RunQuery/exampl.org/wiki/Client_Firewall/TS-2DRoadmap
I will check with Page Forms extension to see if they have suggestions.
Well I was running into a lot of issue trying to move to MediaWiki 1.34. I needed to move to a supported Semantic MediaWiki first before resolving those issues.
Thanks for your help! Legaulph (talk) 12:56, 21 March 2020 (UTC)Reply
Sorry Karima the question I have for you, even though it was the same in the old version.
Why do the links with a "-" changed to "-2D"? Legaulph (talk) 11:36, 23 March 2020 (UTC)Reply
Give me a sample of triples and the code of the wiki page with this problem. I will try to reproduce/fix this problem at the next update. Karima Rafes (talk) 12:32, 23 March 2020 (UTC)Reply
when I run this on a wiki page I get the result with the -2D on the link column, I do see it is fine on other columns where there is a link
{{#sparql:
PREFIX property:<https://server.com/wiki/Property-3A>
PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>
PREFIX swivt:<http://semantic-mediawiki.org/swivt/1.0#>
SELECT ?supported_by ?Subcategory ?name ?version ?technology_name ?owner ?contact ?publication_date ?publication_status ?support_status ?Link
WHERE
{
?Link property:Has_parent_page ?parent.
?parent property:PublicationStatus ?Publication_Status .
?Link property:Has_subobject ?Subobject .
?Subobject property:Technology_Name ?Name .
?Subobject property:Has_Start_Date ?Start_Date .
OPTIONAL {
?Subobject property:Has_End_Date ?End_Date .
}
?Subobject property:Has_Support_Status ?Status .
OPTIONAL {
?parent ?p ?sub .
?cat rdfs:label ?Category .
FILTER(CONTAINS(STR(?cat), "Category")) .
?sub rdfs:subClassOf ?cat .
?sub rdfs:label ?Subcategory .
}
?subobject property:Has_Version ?version .
?subobject property:Technology_Name ?technology_name .
?subobject property:Has_Support_Status ?support_status .
?subobject property:Supported_By ?supported_by .
?subobject property:Has_Start_Date ?start_date .
OPTIONAL {
?subobject property:Has_End_Date ?end_date .
}
OPTIONAL {
?parent property:OwnedBy ?owner.
}
OPTIONAL {
?parent property:PublicationDate ?publication_date .
?parent property:PublicationStatus ?publication_status .
}
OPTIONAL {
?parent ?p ?sub .
?cat rdfs:label ?Category .
FILTER(CONTAINS(STR(?cat), "Category")) .
?sub rdfs:subClassOf ?cat .
?sub rdfs:label ?Subcategory .
}
OPTIONAL {
?parent property:ManufacturedBy ?manufacturer.
}
OPTIONAL {
?parent property:Contact ?contact.
}
}
LIMIT 10
|endpoint=http://server.com/sparql}} Legaulph (talk) 14:17, 23 March 2020 (UTC)Reply
And the sample of triples directly of your database ? Karima Rafes (talk) 14:25, 23 March 2020 (UTC)Reply
You can use this special page to export the RDF:
https://www.semantic-mediawiki.org/wiki/Special:ExportRDF/SMWCon_Fall_2015
Doc: https://www.semantic-mediawiki.org/wiki/Help:RDF_export Karima Rafes (talk) 14:37, 23 March 2020 (UTC)Reply
The same from the endpoint
supported_by Subcategory name version technology_name owner contact publication_date publication_status support_status Link
"TS-Roadmap"
"Technology Roadmap"
"ENTERPRISE 47X110"
"SAP R/3 ENTERPRISE 47X110"
""
"DBServices@its.jnj.com"
2014-03-14Z
"Released"
"Full"
https://server.com/wiki/SQL_Server/TS-2DRoadmap
"TS-Roadmap"
"Technology Roadmap"
"4.6C"
"SAP R/3 4.6C"
""
"DBServices@its.jnj.com"
2014-03-14Z
"Released"
"Limited"
https://server.com/wiki/SQL_Server/TS-2DRoadmap
"TS-Roadmap"
"Technology Roadmap"
"4.0B"
"SAP R/3 4.0B"
""
"DBServices@its.jnj.com"
2014-03-14Z
"Released"
"Limited"
https://server.com/wiki/SQL_Server/TS-2DRoadmap
"TS-Roadmap"
"Technology Roadmap"
"4.5B"
"SAP R/3 4.5B"
""
"DBServices@its.jnj.com"
2014-03-14Z
"Released"
"Limited"
https://server.com/wiki/SQL_Server/TS-2DRoadmap
"TS-Roadmap"
"Technology Roadmap"
"4.0B"
"SAP R/3 4.0B"
""
"DBServices@its.jnj.com"
2014-03-14Z
"Released"
"Full"
https://server.com/wiki/SQL_Server/TS-2DRoadmap
"TS-Roadmap"
"Technology Roadmap"
"4.5B"
"SAP R/3 4.5B"
""
"DBServices@its.jnj.com"
2014-03-14Z
"Released"
"Full"
https://server.com/wiki/SQL_Server/TS-2DRoadmap
"TS-Roadmap"
"Technology Roadmap"
"4.6C"
"SAP R/3 4.6C"
""
"DBServices@its.jnj.com"
2014-03-14Z
"Released"
"Full"
https://server.com/wiki/SQL_Server/TS-2DRoadmap Legaulph (talk) 14:38, 23 March 2020 (UTC)Reply
Show me the result of this link : https://server.com/wiki/Special:ExportRDF/SQL_Server/TS-Roadmap Karima Rafes (talk) 14:41, 23 March 2020 (UTC)Reply
I found. SMW transforms the links of wiki. You have to insert a rewrite rule in your HTTP server :
Doc : https://www.semantic-mediawiki.org/wiki/Help:Pretty_URIs Karima Rafes (talk) 14:52, 23 March 2020 (UTC)Reply
Karima, Thank you, much appreciated. Legaulph (talk) 15:06, 23 March 2020 (UTC)Reply
You're welcome. Bye. Karima Rafes (talk) 15:20, 23 March 2020 (UTC)Reply

Fail to insert to SPARQL endpoint

edit
Latest comment: 4 years ago8 comments2 people in discussion

Hello,

I am quite new to LinkedWiki, but have been playing with it in localhost MW instance, along with Fuseki. It is really interesting combination. Ultimately I would like to "mirror" all the semantic property:value pairs on to a Fuseki dataset, but at the moment I am struggling to do inserts from MW to the Fuseki SPARQL endpoint. an I wondering if I could get some help here :)

I am running:

  • MediaWiki 1.34.1
  • PHP 7.3.14-1~deb10u1 (apache2handler)
  • MariaDB 10.3.22-MariaDB-0+deb10u1
  • Semantic MediaWiki3.1.6

In the Special:SparqlQuery I can perform SELECT queries no problem.

However, when I try to perform the following insert, I get Error message: Sorry, you have not configure the endpoint to update the database.

Which is strange since the same statement run just fine in the SPARQL Flint editor 

PREFIX foaf: <http://xmlns.com/foaf/0.1/>
DELETE
{ foaf:Person foaf:name "Sara" . }
INSERT
{ foaf:Person foaf:name "Zara" . }
WHERE { foaf:Person foaf:name "Sara" . }

Or with a POST request via curl 

curl http://localhost:3030/beerwiki/ -X POST --data 'update=%0APREFIX+foaf%3A+%3Chttp%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2F%3E%0A%0ADELETE%0A%7B%0A++++foaf%3APerson+foaf%3Aname+%22Sara%22+.+%0A%7D%0AINSERT%0A%7B%0A%09foaf%3APerson+foaf%3Aname+%22Zara%22+.+++%0A%7D%0AWHERE+%7B%0A%09foaf%3APerson+foaf%3Aname+%22Sara%22+.+++%0A%7D' -H 'Accept: text/plain,*/*;q=0.9'


Here is my InterWiki setting in LocalSettings.php 

wfLoadExtension( 'LinkedWiki' );

$wgAutoloadClasses['BeerwikiStorageMethod'] = "$IP/extensions/LinkedWiki/storageMethod/BeerwikiStorageMethod.php";

$wgLinkedWikiConfigSPARQLServices["http://localhost/beerwiki"] = array(
	"debug" => true,
	"isReadOnly" => false,
	"typeRDFDatabase" => "fuseki",
	"endpointRead" => "http://localhost:3030/beerwiki/",
	"endpointWrite" => "http://localhost:3030/beerwiki/",
	"login" => "admin",
	"password" => "pw123",
	"HTTPMethodForRead" => "POST",
	"HTTPMethodForWrite" => "POST",
	"lang" => "en",
	"nameParameterRead" => "query",
	"nameParameterWrite" => "update",
    "storageMethodClass" => "BeerwikiStorageMethod"
);

$wgLinkedWikiSPARQLServiceSaveDataOfWiki= "http://localhost:3030/beerwiki/";


And the BeerwikiStorageMethod.php 

<?php

class BeerwikiStorageMethod extends StorageMethodAbstract {
    /**
     * @return string
     */

    private $graphNamed = "http://localhost/beerwiki"; 

    public function getQueryReadStringWithTagLang() {
        return <<<EOT
SELECT DISTINCT  ?value
WHERE
        {
            ?subject ?property ?value .
            FILTER ( lang(?value) = ?lang )
        }
EOT;
    }

    /**
     * @return string
     */
    public function getQueryReadStringWithoutTagLang() {
        return <<<EOT
SELECT DISTINCT  ?value
WHERE
        {
            ?subject ?property ?value .
            FILTER ( lang(?value) = "" )
        }
EOT;
    }

    /**
     * @return string
     */
    public function getQueryReadValue() {
        return <<<EOT
SELECT DISTINCT  ?value
WHERE
        {
            ?subject ?property ?value .
        }
EOT;
    }

    /**
     * @return string
     */
    public function getQueryInsertValue() {
        return <<<EOT
INSERT DATA
    {
            ?subject ?property ?value .
    }
EOT;
    }

    /**
     * @return string
     */
    public function getQueryDeleteSubject() {
        return <<<EOT
DELETE
        { ?subject ?property ?value . }
WHERE
        { ?subject ?property ?value . }

EOT;
    }

    /**
     * @param string $url
     * @return string
     */
    public function getQueryLoadData( $url ) {
        return "";
    }

}

ACastro24 (talk) 14:31, 16 May 2020 (UTC)Reply

Hello,
You need to change :
$wgLinkedWikiSPARQLServiceSaveDataOfWiki= "http://localhost:3030/beerwiki/";
by the same key in $wgLinkedWikiConfigSPARQLServices :
$wgLinkedWikiSPARQLServiceSaveDataOfWiki= "http://localhost/beerwiki";
The wiki doesn't find the config "http://localhost:3030/beerwiki/" and then it uses the config by default where the update endpoint does not exist. Karima Rafes (talk) 15:21, 16 May 2020 (UTC)Reply
Thank you Karima, That makes sense. I changed it, but I am still getting the same error message.
Here is the section of LocalSettings.php concerning LinkedWiki, as it stands:

wfLoadExtension( 'LinkedWiki' );
$wgAutoloadClasses['BeerwikiStorageMethod'] = "$IP/extensions/LinkedWiki/storageMethod/BeerwikiStorageMethod.php";
$wgLinkedWikiConfigSPARQLServices["http://localhost/beerwiki"] = array(
	"debug" => true,
	"isReadOnly" => false,
	"typeRDFDatabase" => "fuseki",
	"endpointRead" => "http://localhost:3030/beerwiki/",
	"endpointWrite" => "http://localhost:3030/beerwiki/",
	"login" => "admin",
	"password" => "pw123",
	"HTTPMethodForRead" => "POST",
	"HTTPMethodForWrite" => "POST",
	"lang" => "en",
	"nameParameterRead" => "query",
	"nameParameterWrite" => "update",
    "storageMethodClass" => "BeerwikiStorageMethod"
);
$wgLinkedWikiSPARQLServiceSaveDataOfWiki= "http://localhost/beerwiki";

ACastro24 (talk) 09:43, 18 May 2020 (UTC)Reply
In the special page about the LinkedWiki configuration, all is ok ?
In the http errors, there is nothing ? Karima Rafes (talk) 10:25, 18 May 2020 (UTC)Reply
Try also without the parameter : "typeRDFDatabase" => "fuseki" Karima Rafes (talk) 10:37, 18 May 2020 (UTC)Reply
Thank you Karima.
commenting <code>"typeRDFDatabase" => "fuseki"</code> did not change anything
The special page about the LinkedWiki configuration seems OK. Here is a screen capture of the config for that endpoint.
http://artserver.org/publicfiles/Screenshot_2020-05-18%20LinkedWiki%20configuration%20-%20beerwiki.png
This is the error I get:
Error endpoint:
Error http_response_code: 0
Error message: Sorry, you have not configure the endpoint to update the database.
It does not seem to get any response from the SPARQL endpoint.
In Fuseki call the update POST also does not get acknowledged, which makes me think that the issue might be in how LinkedWiki is trying to "talk" to fuseki on update posts.
Is there a way I can debugg the POST calls that LinkedWiki is making to the SPARQL endpoint?

ACastro24 (talk) 19:36, 18 May 2020 (UTC)Reply
The problem is probably in the config of Fuseki or in the SPARQL client.
Try to test directly via this project :
https://github.com/BorderCloud/SPARQL
You can create a new test for Fuseki such as "https://github.com/BorderCloud/SPARQL/blob/master/tests/virtuosoTest.php"
After you can change the line 36 in "src/Curl.php" by $debug = true, you will see the protocol between Fuseki and the client. Karima Rafes (talk) 06:27, 19 May 2020 (UTC)Reply
I pushed a new version. There are a bug in the special page RDFUnit and refresh database for the version 1.34.1.
I don't know if your problem is related.
NB: You need to change a little your localsettings (new installation about PushAll and of NamespaceData) Karima Rafes (talk) 12:03, 14 June 2020 (UTC)Reply

Internal Error trying to delete a page

edit
Latest comment: 4 years ago2 comments2 people in discussion

MediaWiki 1.31.7 

PHP	7.3.19 (apache2handler)
MySQL	8.0.20
Elasticsearch	5.6.16
Semantic MediaWiki	3.1.6
LinkedWiki	3.4.0 (5601693) 07:10, 14 June 2020

[a0f68dd572e6f78708d8afea] /index.php?title=Encrypting_Databases_test&action=delete Error from line 84 of D:\Bitnami\wampstack\apps\mediawiki\extensions\LinkedWiki\LinkedWiki.php: Call to undefined method OutputPage::addWikiTextAsInterface() Backtrace:

  1. 0 D:\Bitnami\wampstack\apps\mediawiki\includes\Hooks.php(177): LinkedWiki::onArticleDeleteAfterSuccess(Title, OutputPage)
  2. 1 D:\Bitnami\wampstack\apps\mediawiki\includes\Hooks.php(205): Hooks::callHook(string, array, array, NULL)
  3. 2 D:\Bitnami\wampstack\apps\mediawiki\includes\page\Article.php(1871): Hooks::run(string, array)
  4. 3 D:\Bitnami\wampstack\apps\mediawiki\includes\page\Article.php(1618): Article->doDelete(string, boolean)
  5. 4 D:\Bitnami\wampstack\apps\mediawiki\includes\actions\DeleteAction.php(46): Article->delete()
  6. 5 D:\Bitnami\wampstack\apps\mediawiki\includes\MediaWiki.php(500): DeleteAction->show()
  7. 6 D:\Bitnami\wampstack\apps\mediawiki\includes\MediaWiki.php(294): MediaWiki->performAction(Article, Title)
  8. 7 D:\Bitnami\wampstack\apps\mediawiki\includes\MediaWiki.php(861): MediaWiki->performRequest()
  9. 8 D:\Bitnami\wampstack\apps\mediawiki\includes\MediaWiki.php(524): MediaWiki->main()
  10. 9 D:\Bitnami\wampstack\apps\mediawiki\index.php(42): MediaWiki->run()
  11. 10 {main}

Legaulph (talk) 16:26, 23 July 2020 (UTC)Reply

You have to update your mediawiki.
OutputPage::addWikiTextAsInterface() exists since 1.32. Karima Rafes (talk) 16:53, 23 July 2020 (UTC)Reply

popper.js not found after MW 1.35 upgrade

edit
Latest comment: 4 years ago1 comment1 person in discussion
RESOLVED
By mistake didn't installed it with the composer/yarn

The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

The following error occured after upgrade to MW 1.35 (Linked 3.4.2), it seems popper.js is missing.


/linked/load.php?lang=en&modules=ext.LinkedWiki.SparqlParser%2Csgvizler2%7Cjquery%2Coojs-ui-core&skin=vector&version=1wkye RuntimeException from line 485 of /var/www/html/includes/resourceloader/ResourceLoaderFileModule.php: ResourceLoaderFileModule::getFileContents: script file not found, or is not a file: "/var/www/html/extensions/LinkedWiki/node_modules/popper.js/dist/umd/popper.min.js"

Backtrace:

#0 /var/www/html/includes/resourceloader/ResourceLoaderFileModule.php(905): ResourceLoaderFileModule->getFileContents(string, string)

#1 /var/www/html/includes/resourceloader/ResourceLoaderFileModule.php(362): ResourceLoaderFileModule->readScriptFiles(array)

#2 /var/www/html/includes/resourceloader/ResourceLoaderModule.php(736): ResourceLoaderFileModule->getScript(ResourceLoaderContext)

#3 /var/www/html/includes/resourceloader/ResourceLoaderModule.php(704): ResourceLoaderModule->buildContent(ResourceLoaderContext)

#4 /var/www/html/includes/resourceloader/ResourceLoader.php(1191): ResourceLoaderModule->getModuleContent(ResourceLoaderContext)

#5 /var/www/html/includes/resourceloader/ResourceLoader.php(899): ResourceLoader->makeModuleResponse(ResourceLoaderContext, array, array)

#6 /var/www/html/load.php(51): ResourceLoader->respond(ResourceLoaderContext)

#7 /var/www/html/load.php(38): wfLoadMain()

#8 {main} S0ring (talk) 15:01, 2 October 2020 (UTC)Reply

The discussion above is closed. Please do not modify it. No further edits should be made to this discussion.

How to install sgvizler2 in MediaWiki

edit
Latest comment: 3 years ago2 comments2 people in discussion
RESOLVED
Documentation : Extension:LinkedWiki#Installation_of_LinkedWiki

The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

After install the LinkedWiki extnesion, how we can install sgvizler2 ? Lotusccong (talk) 14:47, 22 June 2021 (UTC)Reply

If you have done all steps here : Extension:LinkedWiki#Installation of LinkedWiki. sgvizler2 has been installed via the command yarn. You can now use it. Karima Rafes (talk) 14:56, 22 June 2021 (UTC)Reply
The discussion above is closed. Please do not modify it. No further edits should be made to this discussion.

Show blank page in SPARQL results if have | chart=bordercloud.visualization.DataTable

edit
Latest comment: 3 years ago7 comments2 people in discussion
RESOLVED
Probably an error in the query ... Add

The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

As a new beginner in LinkedWiki, I copy the SPARQL Wiki sytax from Linkedwiki.com

It seems that if I included the | chart=bordercloud.visualization.DataTable , it will show blank page.

After I remove it, it did show the results.

Appreciate you can enlight me why this happen ? Lotusccong (talk) 15:06, 22 June 2021 (UTC)Reply

Probably an error in the query or in the configuration...
Add | log=2
And | debug=YES
Details : https://www.mediawiki.org/wiki/Extension:LinkedWiki/Sparql_parser#Parameter:_log Karima Rafes (talk) 15:21, 22 June 2021 (UTC)Reply
Can you share the link of the query in Linkedwiki.com ? I will check in my wiki. Karima Rafes (talk) 15:40, 22 June 2021 (UTC)Reply
My Link page is at http://tbpedia.org/book/index.php/DemoLinkeddata . I set the return results LIMIT to 5 .
You will notice that the query that included with | chart=bordercloud.visualization.DataTable show no error , no results.
Without , able to show the results.
I get the query from https://linkedwiki.com/query/Wikipedia_research Lotusccong (talk) 10:14, 23 June 2021 (UTC)Reply
File not found : "/home/sjkcyuhu/public_html/tbpedia.org/book/extensions/LinkedWiki/node_modules/popper.js/dist/umd/popper.min.js"
Does the directory "extensions/LinkedWiki/node_modules" exist ?
If no, you need to go in this the extension folder : cd extensions/LinkedWiki
and execute : yarn install --production=true (or npm install --production) Karima Rafes (talk) 12:13, 23 June 2021 (UTC)Reply
Got it. I notice that I didn't run the yarn install or npm install after I run the Composer installation. That's why the intallation is incomplete but it show as installed in Special page. my hosting Terminal not support runnning yarn or npm comman but support composer.
Any better way that make the installtion process only required the Composer ? Lotusccong (talk) 13:51, 23 June 2021 (UTC)Reply
When an extension uses a javascript library not avalaible in Mediawiki, there is no other solution than to install it manually.
I have to check if Mediawiki 3.6 can now automate the installation of extension libraries with yarn or npm. Karima Rafes (talk) 14:16, 23 June 2021 (UTC)Reply
The discussion above is closed. Please do not modify it. No further edits should be made to this discussion.

Querying multiple sources

edit
Latest comment: 2 years ago3 comments2 people in discussion

Is it possible to query multiple endpoints at once (for example, Wikidata, Europeana and our own pages) and then represent the returned properties in a map or data table, as it is possible to do with a single endpoint? I wanted to be able to show common properties between these endpoints and each of their entries. Jdm.oliveira (talk) 15:09, 25 November 2022 (UTC)Reply

In theory yes... LinkedWiki sends the federated query at one endpoint to execute the the query. After this endpoint communicates with other endpoints to resolve the query.
Generally, before, you need to enable "federated query processing" in the database (example with Virtuoso). Karima Rafes (talk) 15:56, 25 November 2022 (UTC)Reply
Thank you for your answer. Sadly my database is not with Virtuoso but with MySQL. I have not found out yet a way that lets me enable federated query processing without isql.
If I try to do a federated query (simply using "SERVICE<http://sparql.europeana.eu/>{}" I also get the following error:
"Sorry, the sparql server sent an error.
Virtuoso 42000 Error SQ070:SECURITY: Must have select privileges on view DB.DBA.SPARQL_SINV_2 SPARQL query"
I am still quite unexperienced with SPARQL, but my idea was to query properties from both endpoints, such as coordinates, and place them on a leaflet map. I can do this only with one endpoint so far. Jdm.oliveira (talk) 17:04, 26 November 2022 (UTC)Reply

composer installation not compatible with node.js 18

edit
Latest comment: 1 year ago4 comments2 people in discussion

The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

The composer installation fails with the following errors


# composer install --no-dev

...

1.169 [1/4] Resolving packages...

2.133 warning popper.js@1.16.1: You can find the new Popper v2 at @popperjs/core, this package is dedicated to the legacy v1

11.49 [2/4] Fetching packages...

23.38 error eslint-plugin-jsdoc@39.2.2: The engine "node" is incompatible with this module. Expected version "^14 || ^16 || ^17". Got "18.17.1"

23.40 error Found incompatible module. 134.34.200.62 (talk) 08:27, 21 August 2023 (UTC)Reply

See response here:
https://phabricator.wikimedia.org/T334662 Karima Rafes (talk) 19:01, 5 September 2023 (UTC)Reply
npm install --production=true instead of yarn install --production=true fixed the error 134.34.200.62 (talk) 10:59, 11 September 2023 (UTC)Reply
I updated the packages in the last version. (master) Karima Rafes (talk) 21:18, 15 October 2023 (UTC)Reply
The discussion above is closed. Please do not modify it. No further edits should be made to this discussion.

Fail to insert to SPARQL endpoint

edit
Latest comment: 1 year ago9 comments2 people in discussion

Hello!

I am struggling to do insert from Mediawiki 1.39.5 to GraphDB SPARQL endpoint. I have installed the LinkedWiki 3.7.1 compatible with MW. Also, i am running SMW 4.1.1, PHP 8.1.2 and MySQL 8.0.35

In the Special:SparqlQuery I can perform SELECT queries no problem.

However, when I try to perform the following insert, I get Error message: Sorry, you have not configure the endpoint to update the database.

Which is strange since the same statement run just fine in the GraphDB sparql endpoint

PREFIX dc: <http://purl.org/dc/elements/1.1/>
INSERT {
         GRAPH <http://example> {
          <http://example/book2> dc:title "A new book2" ;
                                 dc:creator "A.N.Other2" .
         }

Here is my setting in LocalSettings.php

wfLoadExtension( 'LinkedWiki' );

$wgAutoloadClasses['GraphdbStorageMethod'] = "$IP/extensions/LinkedWiki/storageMethod/GraphdbStorageMethod.php";

$wgLinkedWikiConfigSPARQLServices["http://localhost/graphdb"] = array(
	"debug" => true,
	"isReadOnly" => false,
	"typeRDFDatabase" => "graphdb",
	"endpointRead" => "http://localhost:3030/graphdb/myrepository",
	"endpointWrite" => "http://localhost:3030/graphdb",
	"login" => "test",
	"password" => "test",
	"HTTPMethodForRead" => "POST",
	"HTTPMethodForWrite" => "POST",
	"lang" => "en",
	"nameParameterRead" => "query",
	"nameParameterWrite" => "update",
    "storageMethodClass" => "GraphdbStorageMethod"
);

$wgLinkedWikiSPARQLServiceSaveDataOfWiki= "http://localhost:3030/graphdb";

And the GraphdbStorageMethod.php

<?php

class GraphdbStorageMethod extends StorageMethodAbstract {
    /**
     * @return string
     */

    private $graphNamed = "http://localhost/graphdb"; 

    public function getQueryReadStringWithTagLang() {
        return <<<EOT
SELECT DISTINCT  ?value
WHERE
        {
            ?subject ?property ?value .
            FILTER ( lang(?value) = ?lang )
        }
EOT;
    }

    /**
     * @return string
     */
    public function getQueryReadStringWithoutTagLang() {
        return <<<EOT
SELECT DISTINCT  ?value
WHERE
        {
            ?subject ?property ?value .
            FILTER ( lang(?value) = "" )
        }
EOT;
    }

    /**
     * @return string
     */
    public function getQueryReadValue() {
        return <<<EOT
SELECT DISTINCT  ?value
WHERE
        {
            ?subject ?property ?value .
        }
EOT;
    }

    /**
     * @return string
     */
    public function getQueryInsertValue() {
        return <<<EOT
INSERT DATA
    {
            ?subject ?property ?value .
    }
EOT;
    }

    /**
     * @return string
     */
    public function getQueryDeleteSubject() {
        return <<<EOT
DELETE
        { ?subject ?property ?value . }
WHERE
        { ?subject ?property ?value . }

EOT;
    }

    /**
     * @param string $url
     * @return string
     */
    public function getQueryLoadData( $url ) {
        return "";
    }

}

193.170.253.73 (talk) 09:32, 13 December 2023 (UTC)Reply

I also noticed this while using {{#sparql ..}} in a page and used the same query that it sent wrong "POST" request to the SPARQL server. Instead of .../sparql?update=... it is sending .../sparql?query=... 193.170.253.73 (talk) 15:12, 13 December 2023 (UTC)Reply
I see an error with the variable "save", try this line:
$wgLinkedWikiSPARQLServiceSaveDataOfWiki= "http://localhost/graphdb";
{{#sparql is always with Query parameter (reading only). To save data, you need to use the RDF elements in a page
https://www.mediawiki.org/wiki/Extension:LinkedWiki#Write_data_of_main_pages_in_a_data_namespace
or via Lua:
https://www.mediawiki.org/wiki/Extension:LinkedWiki/lua
Best,
Karima Karima Rafes (talk) 15:58, 13 December 2023 (UTC)Reply
Thank you for the quick response and the information. I have changed the variable but i am still getting the same error. 193.170.253.73 (talk) 07:40, 18 December 2023 (UTC)Reply
I didn't test with GraphDB but I think, it's a problem in the configuration.
You can use the special page LinkedWiki to check each parameter in your configuration. Karima Rafes (talk) 09:08, 18 December 2023 (UTC)Reply
Special page LinkedWiki has the same parameters, which i defined in my LocalSettings.php.
$wgLinkedWikiConfigSPARQLServices["http://localhost/graphdb"] = array(
"debug" => true,
"isReadOnly" => false,
"typeRDFDatabase" => "graphdb",
"endpointRead" => "http://localhost/graphdb/myrepository",
"endpointWrite" => "http://localhost/graphdb/myrepository/statements",
"login" => "test",
"password" => "test",
"HTTPMethodForRead" => "POST",
"HTTPMethodForWrite" => "POST",
"lang" => "en",
"nameParameterRead" => "query",
"nameParameterWrite" => "update",
"storageMethodClass" => "GraphdbStorageMethod"
);
$wgLinkedWikiSPARQLServiceSaveDataOfWiki= "http://localhost/graphdb";
I don't know what is the exact issue. 193.170.253.73 (talk) 09:56, 18 December 2023 (UTC)Reply
Try, debug= false Karima Rafes (talk) 10:12, 18 December 2023 (UTC)Reply
What is your version of PHP?
7 is only supported for the moment (php8 is not supported by MediaWiki officially)
If there is always a problem with php7:
OPTION A: if you pay a license GraphDB, you can probably ask the help of GraphDB support to open the PHP code.
OPTION B: switch on another database
OPTION C: debug the PHP code yourself and send me the fix ;) Karima Rafes (talk) 10:29, 18 December 2023 (UTC)Reply
I am using php 8 and I am using free version of GraphDB. If php version is causing the problem then i will try with php7 and then update you about the issue. 193.170.253.73 (talk) 14:20, 18 December 2023 (UTC)Reply

Datatable security error with sgvizler2

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Latest comment: 7 months ago2 comments2 people in discussion

Hello,

Am getting et secutirty issue for sgvizler and i think it's caused by datatables version as on this discussion for SMW.

Can you consider migrate to datatable 1.10.23, or 2.0.3, published on 22 Mar, 2024 see discussion on version safe?

Regards! Willyedoo (talk) 12:58, 19 June 2024 (UTC)Reply

Thanks.
I create the ticket:
https://phabricator.wikimedia.org/T375155
In the meantime, you can perform the operation manually in the folder lib of datables (backup the folder to do a rollback if the new version is not supported).
Best regards. Karima Rafes (talk) 07:05, 19 September 2024 (UTC)Reply

Column Sorting in SGVizler2 Tables

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Latest comment: 7 months ago5 comments2 people in discussion

Hi, I’m trying to enable sorting on all columns in SGVizler2 tables (with small arrows for ascending/descending order). Even with the ordering option set in DataTables (in commons.js), the columns are still showing as sorting_disabled. I’d like to be able to sort any column, not just the first one. Has anyone else run into this or know how to fix it?

Thanks for any help! Anchardo (talk) 07:04, 17 September 2024 (UTC)Reply

Can you reproduce this problem on Linkedwiki.com with the Wikidata endpoint? And share the link here.
Thanks. Karima Rafes (talk) 08:18, 17 September 2024 (UTC)Reply
Here is an example: https://linkedwiki.com/query/Swiss_writers
I don't know which/if an option can be used to enable the ordering (cf. https://datatables.net/reference/option/ordering)...? Anchardo (talk) 09:51, 17 September 2024 (UTC)Reply
Hello,
I audited the code. So, the response is on this page:
https://datatables.net/reference/option/columnDefs
Without parameters with the option "targets", the columnDef disables the targets.
(line 109 of file DataTable.ts disables the targets)
In the javascript of sgvizler, try to find the code: "'targets': c," and remove it. I think, it can fix quickly this problem. There will also be side effects on appearance (maybe?).
Sparql controls the order in the columns. It's probably why I disabled this option.
I will add the possibility to control the targets in the next version but I dont know when... I created the ticket.
https://phabricator.wikimedia.org/T375154 Karima Rafes (talk) 06:41, 19 September 2024 (UTC)Reply
Thanks for your investigation!
I tried to comment the line '"'targets':c" in the sgvizler2.js file (+ add an option), but without visible change on my table. Since I am in a tight schedule I decided to simplify my tables (cf. also my other question of the PDFs - where not all the columns were visible) and to provide the ordering via SPARQL.
What could be useful in the future would be to document if it is possible to "overwrite" the current code via common.js or how to proceed to change this kind of thing. Anchardo (talk) 14:00, 19 September 2024 (UTC)Reply

SGVizler 2 tables in PDF format

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Latest comment: 8 months ago2 comments2 people in discussion

Hello,

Currently, when generating a PDF with SGVizler 2 tables, the content sometimes exceeds the width of an A4 page in portrait format, causing columns to be cut off. Is there a way to set the PDF to landscape format, or any other solution to ensure all columns are included?

Best regards Anchardo (talk) 07:20, 17 September 2024 (UTC)Reply

Sgvizler2 uses the tool datatables to generate the table and the pdf button. There is probably one option in datatables to resolve your problem. If you find it, you can try to push this parameter in the options of sgvizler2. Karima Rafes (talk) 08:11, 17 September 2024 (UTC)Reply
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