Erweiterung:SemanticDependencyUpdater

This page is a translated version of the page Extension:SemanticDependencyUpdater and the translation is 35% complete.
MediaWiki-Erweiterungen
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Semantic Dependency Updater
Freigabestatus: stabil
Einbindung Benutzer-Schnittstelle
Beschreibung Monitors semantic data changes and updates depended pages
Autor(en) Simon Heimler, Alexander Gesinn
Betreuer gesinn.it
Letzte Version 2.0.2 (2020-05-13)
MediaWiki 1.31 - 1.36
Datenbankänderungen Nein
Lizenz MIT-Lizenz
Herunterladen
Releases

  • $wgSDUProperty = 'Semantic Dependency';
  • $wgSDUUseJobQueue = false;

Compatibility

  • Semantic MediaWiki 3.1+

The Semantic Dependency Updater (SDU) extension monitors pages for changes in their semantic data. If the "Semantic Dependency" property is found, this extension will update (null-edit) all pages that have been selected through that property. A common use case is change propagation where pages needs to update (pull) their semantic data via an ask query from a changed page.

The "Semantic Dependency property" is evaluated as an ASK query. It is therefore possible to define either a list of pages directly or do more complex selections.

It is possible to build a chain of semantic dependencies that will update recursively. Be careful not to build loops!

Installation

Semantic MediaWiki 3.1.0 or later is required!
  • Die Download und die Datei(en) in ein Verzeichnis namens SemanticDependencyUpdater im Ordner extensions/ ablegen.
  • Folgenden Code am Ende deiner LocalSettings.php hinzufügen:
    wfLoadExtension( 'SemanticDependencyUpdater' );
    
  • Configure as required.
  •   Erledigt – Zu Special:Version in dem Wiki (bei Einstellung auf deutsch nach Spezial:Version) navigieren, um die erfolgreiche Installierung der Erweiterung zu überprüfen.

Instead of downloading the zip archive you may also check this extension out via Git:

git clone https://github.com/gesinn-it/SemanticDependencyUpdater.git extensions/SemanticDependencyUpdater

Konfiguration

Mandatory

Make sure, a "Semantic Dependency" property exists, e.g. "Property:Semantic_Dependency" needs to exist and MUST be of the datatype Text:

[[Has type::Text]]

Optional

// Name of the Semantic Dependency property
$wgSDUProperty = 'Semantic Dependency';
// If enabled, SDU will create a Job for each update
$wgSDUUseJobQueue = false;

Verwendung

The value of the Semantic Dependency property is evaluated as an ASK query, except that [[ or ]] must be ommitted. If there are more conditions, combine them through AND and OR

Beispiele

Update Self

This will save the current page twice. Useful when the page stores semantic properties that are calculated from other properties of the same page.

[[Semantic Dependency::{{FULLPAGENAME}}]]

Update other page(s)

[[Semantic Dependency::Product:Test Product]]
[[Semantic Dependency::{{{Target Page|}}}]]

Update pages with relation to current page

This will update all pages that link with Part Of to the current page.

[[Semantic Dependency::Part Of::{{FULLPAGENAME}}]]

More Advanced Queries

Be careful that the query does not return too many pages, as this will result in a heavy load.

[[Semantic Dependency::Category:Product]]
[[Semantic Dependency::Category:Product AND Tag::Demo]]
[[Semantic Dependency::Category:Person OR Category:Organization]]

Example test case

  • Make sure, a page Property:Semantic_Dependency exists with content [[Has type::Text]]
  • Make sure, $wgSDUUseJobQueue = false;
  • Create a page A with
[[Title::A]]
  • Create a page B with
* [[Part Of::A| ]][[Title::{{#show:A|?Title}}.B]]
* {{#show:{{FULLPAGENAME}}|?Title}}
  • Now, change page A as follows
[[Title::XXX]]

As a result, you should see

- XXX.B
- XXX.B

on page B

Debugging

  • Note, that on some systems logging to /tmp might not work
  • Make sure, a log folder, writable by your web server, exists
> mkdir /var/log/mediawiki
> chmod -R www-data. /var/log/mediawiki
  • In your LocalSettings enable
$wgDebugLogGroups['SemanticDependencyUpdater'] = '/var/log/mediawiki/SDU.log';
  • Watch the log file
> tail -f /var/log/mediawiki/SDU.log
  • If things work as expected, this will look like:
2020-03-25 13:01:45 vagrant wikidb01-wk: [SDU] --> A
2020-03-25 13:01:45 vagrant wikidb01-wk: [SDU] -----> Data changes detected
2020-03-25 13:01:45 vagrant wikidb01-wk: [SDU] --------> [[Part Of::A]]
2020-03-25 13:01:45 vagrant wikidb01-wk: [SDU] --------> [Edit] B

Siehe auch