Special properties (optional)

From semantic-mediawiki.org

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 19 optional special properties provided by Semantic MediaWiki:

NameDescriptionHelp pageSinceKey
Modification dateHolds a fixed value that corresponds to the date of the last modification of each pageSpecial property "Modification date"1.4.0
_MDAT
Creation dateHolds a fixed value that corresponds to the date of the first revision of each pageSpecial property "Creation date"1.7.0
_CDAT
Is a new pageHolds a value marking a page as being new or notSpecial property "Is a new page"1.7.1
_NEWP
Last editor isHolds the page name of the user who created the last page revisionSpecial property "Last editor is"1.7.1
_LEDT
Has queryLinks a page to the subobject created by a query recording its profileSpecial property "Has query"1.8.0
_ASK
Query depthHolds the value of the property depth of a querySpecial property "Query depth"1.8.0
_ASKDE
Query formatHolds the name of the result format used in a querySpecial property "Query format"1.8.0
_ASKFO
Query sizeHolds the value of the number of conditions in a querySpecial property "Query size"1.8.0
_ASKSI
Query stringHolds the conditions of the query as a stringSpecial property "Query string"1.8.0
_ASKST
Query durationHolds the value of the duration a query took to executeSpecial property "Query duration"1.9.0
_ASKDU
MIME typeHolds the MIME type of an uploaded fileSpecial property "MIME type"1.9.1
_MIME
Media typeHolds the Media type of an uploaded fileSpecial property "Media type"1.9.1
_MEDIA
Allows patternPattern to match a permissible valueSpecial property "Allows pattern"2.4.0
_PVAP
Display title ofHolds a specific denote title for an entitySpecial property "Display title of"2.4.0
_DTITLE
Has uniqueness constraintAllows to restrict value annotation to be uniqueSpecial property "Has uniqueness constraint"2.4.0
_PVUC
Language codeHandles BCP47 conform language codes specifying the language of the annotated textSpecial property "Language code"2.4.0
_LCODE
Query parametersHolds the parameters a query used to select its outputSpecial property "Query parameters"2.5.0
_ASKPA
Query sourceHolds the identifier of an alternative (e.g. remote) query sourceSpecial property "Query source"2.5.0
_ASKSC
Query stateHolds the status code a query uses to define its internal stateSpecial property "Query state"3.0.0
_ASKCO

Conversely all special properties not listed here are mandatory.

Remember to run maintenance script "setupStore.php"Allows to set up the data backend/store followed by maintenance script "rebuildData.php"Allows to rebuild all the semantic data for a selected data backend/store when disabling or enabling a special property. Further information is available on the respective configuration parameter's documentation page.