Function "enableSemantics"

Error screen shown due to a missing enableSemantics call in "LocalSettings.php"

The enableSemantics function should be added to the "LocalSettings.php" file to enable Semantic MediaWiki.

Usage

enableSemantics takes two parameters:

• The domain name. This is used as URI-namespace in RDF.
• The second parameter is optional and indicates whether the URI namespace is completed or not

Since Semantic MediaWiki 3.2.0Released on 7 September 2020 and compatible with MW 1.31.0 - 1.35.x. a configuration preloading feature is available as a mechanism to preload a set of configurations.1

Examples

enableSemantics( 'wiki.example.org' );

enableSemantics( 'example.org/id/' );

Specifying the protocol

enableSemantics( 'https://example.org/id/', true );

Empty identifier

For a local installation where no domain is available (or necessary), the enableSemantics function can be used simply with:

enableSemantics();

Context

Using the enableSemantics function ensures that:

• An URI related namespace is setup for the RDF export and the SPARQLStore replication process
• Namespace constants (e.g. SMW_NS_PROPERTY) are accessible in the "LocalSettings.php" file when making changes to configuration parameters like configuration parameter $smwgNamespacesWithSemanticLinksDefines for which namespaces the semantic links and annotations are to be evaluated

If changes to the configuration parameter $smwgNamespaceIndexSets the index of the first namespace to be used by Semantic MediaWiki are necessary, please follow the instructions in connection with enableSemantics.2

See also

• Help page on installing Semantic MediaWiki
• Help page on configuration preloading
• Help page on the extension registration mechanism
• Help page on importing vocabulary
• Help page on pretty URIs