`#ask:` syntax – "lang" printout language filter

`#ask:` syntax details:
Syntax	+lang=
Description	Property "Has description" (as page type) with input value "Allows to filter a language specific printout[[CiteRef::gh:smw:2037" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Datatype support	Datatype "Monolingual text "Holds a text value that associates the annotation with a specific language code
Component	printout
Software	Semantic MediaWiki
Since version	Semantic MediaWiki 2.5.0 Released on an unknown date unknown versions of MediaWiki
Keyword	language filter

The +lang= printout language filter was introduced in Semantic MediaWiki 2.5.0Released on an unknown date unknown versions of MediaWiki.

Rationale

It allows to filter results that match a specific language for printout statements using the +lang= query parameter. The filtering is only applied to properties of datatype "Monolingual text"Holds a text value that associates the annotation with a specific language code.

It is applied during query post-processing after the condition has already retrieved matchable entities. The printout and hereby the data values may match text in different languages and unless the query condition was designed in a way that would made them reducible, it would display them all. Thus a query condition can be indifferent towards possible language matches, yet enables to only select the one that match the denoted language value. See the help page on datatype "Monolingual text"Holds a text value that associates the annotation with a specific language code for examples to limit the query condition to only select results for specific language.

Examples

Syntax

{{#ask:
 [[Has property description::+]]
 |?Has property description|+lang=en
}}

Result

	Property description"Property description" is a predefined property that allows to describe a property in context of a language and is provided by Semantic MediaWiki.
foaf:homepage	URL of the homepage of something, which is a general web resource.
foaf:knows	A person known by this person (indicating some level of reciprocated interaction between the parties).
foaf:name	A name for some thing or agent.
owl:differentFrom	The property that determines that two given individuals are different.

or only show German translations if available:

Syntax

{{#ask:
 [[Has property description::+]]
 |?Has property description|+lang=de
}}

Result

	Property description"Property description" is a predefined property that allows to describe a property in context of a language and is provided by Semantic MediaWiki.
foaf:homepage
foaf:knows
foaf:name
owl:differentFrom

Link

<sandbox.semantic-mediawiki.org>: More examples for this query parameter

Status:	effective
Progress:	100%
Version:	2.5.0+

#ask: syntax – "lang" printout language filter

Rationale

Examples

See also

`#ask:` syntax – "lang" printout language filter