Special properties (visible)

From semantic-mediawiki.org

This help page lists the visible special properties. Visible special properties are viewable by the user via the browsing interfaces of the wiki.

The following table gives an overview of all 42 visible special properties provided by Semantic MediaWiki:

Name Description Help Added Key
Allows value Lists one permissible value for a property help page 1.0
_PVAL
Corresponds to Gives the conversion factor for some unit of a physical quantity and the possible names for that unit help page 1.0
_CONV
Display units Specifies the a comma-separated list of units or formats that a property should use in display help page 1.0
_UNIT
Equivalent URI Marks a page in the wiki as having a well-known meaning beyond this wiki, in an external URI help page 1.0
_URI
Has type Assigns a datatype to a property help page 1.0
_TYPE
Imported from Allows users to reuse elements of external vocabularies directly within the wiki help page 1.0
_IMPO
Provides service Adds service links to properties help page 1.0
_SERV
Subproperty of Lets you indicate that one property is a subproperty of another help page 1.0
_SUBP
Has fields Defines a short list of fields with a fixed type and order for datatype Record help page 1.5.0
_LIST
Subcategory of Lets you explicitly indicate that one category is a subcategory of another help page 1.5.0
_SUBC
Has subobject Holds the subobjects set on a page help page 1.7.0
_SOBJ
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 precision of Allows to define the display precision in digits help page 2.4.0
_PREC
Has property description Adds localizable context help to properties help page 2.4.0
_PDESC
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
Allows value list Adds a reference to a list of permissible values for a property help page 2.5.0
_PVALI
External formatter URI Declares an external URL with placeholders $1, $2 help page 2.5.0
_PEFU
External identifier Specifies an external identifier help page 2.5.0
_PEID
Has preferred property label Adds localizable labels to a property help page 2.5.0
_PPLB
Is edit protected Stores the status of an edit restriction of a page help page 2.5.0
_EDIP
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
Change propagation Holds the new property specification of a property or category page help page 3.0.0
_CHGPRO
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
Schema definition Holds the definition of a schema what was added to namespace "smw/schema" help page 3.0.0
_SCHEMA_DEF
Schema description Holds the description of a schema what was added to namespace "smw/schema" help page 3.0.0
_SCHEMA_DESC
Schema link Holds the link of a schema what was added to namespace "smw/schema" help page 3.0.0
_SCHEMA_LINK
Schema tag Holds the tags to a schema what was added to namespace "smw/schema" help page 3.0.0
_SCHEMA_TAG
Schema type Holds the type of a schema what was added to namespace "smw/schema" help page 3.0.0
_SCHEMA_TYPE

Conversely all special properties not listed here are not visible by the user.

Special property "Subcategory of"Lets you explicitly indicate that one category is a subcategory of another is only a visible special property if option SMW_CAT_HIERARCHY to configuration parameter configuration parameter $smwgCategoryFeaturesSets the behaviour of the query features related to category handling was removed from it".

See also[edit]

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