Special properties (optional)

This help page lists the optional special properties. Optional special properties are provided by Semantic MediaWiki but may be disabled or enabled via a configuration parameter. The respective configuration parameters are noted on the corresponding special property's documentation page.

The following table gives an overview of all 21 optional special properties provided by Semantic MediaWiki:

Name	Description	Help	Added	Key
Modification date	Holds a fixed value that corresponds to the date of the last modification of each page	help page	1.4.0	MDAT
Creation date	Holds a fixed value that corresponds to the date of the first revision of each page	help page	1.7.0	CDAT
Is a new page	Holds a value marking a page as being new or not	help page	1.7.1	NEWP
Last editor is	Holds the page name of the user who created the last page revision	help page	1.7.1	LEDT
Has query	Links a page to the subobject created by a query recording its profile	help page	1.8.0	ASK
Query depth	Holds the value of the property depth of a query	help page	1.8.0	ASKDE
Query format	Holds the name of the result format used in a query	help page	1.8.0	ASKFO
Query size	Holds the value of the number of conditions in a query	help page	1.8.0	ASKSI
Query string	Holds the conditions of the query as a string	help page	1.8.0	ASKST
Query duration	Holds the value of the duration a query took to execute	help page	1.9.0	ASKDU
MIME type	Holds the MIME type of an uploaded file	help page	1.9.1	MIME
Media type	Holds the Media type of an uploaded file	help page	1.9.1	MEDIA
Allows pattern	Pattern to match a permissible value	help page	2.4.0	PVAP
Display title of	Holds a specific denote title for an entity	help page	2.4.0	DTITLE
Has uniqueness constraint	Allows to restrict value annotation to be unique	help page	2.4.0	PVUC
Language code	Handles BCP47 conform language codes specifying the language of the annotated text	help page	2.4.0	LCODE
Query parameters	Holds the parameters a query used to select its output	help page	2.5.0	ASKPA
Query source	Holds the identifier of an alternative (e.g. remote) query source	help page	2.5.0	ASKSC
Is property group	Marks a category for holding properties belonging to a property group	help page	3.0.0	PPGR
Query state	Holds the status code a query uses to define its internal state	help page	3.0.0	ASKCO
Attachment link	Holds the links to files embedded on a page	help page	3.1.0	ATTCH LINK

Conversely all special properties not listed here are mandatory.

Remember to run maintenance script "setupStore.php"No description was provided. followed by maintenance script "rebuildData.php"No description was provided. when disabling or enabling a special property. Further information is available on the respective configuration parameter's documentation page.

See also

File:Octocat.png "TypesRegistry.php" – The general characteristics of a special property are defined here.