Module:PropertyPathTest

Lua

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Interface for Module:PropertyPath

Functions

To be used with #invoke in template

matches(frame)

A function to check if a target item is reachable with a property path from a source item

• frame.args[1] : source item
• frame.args[2] : a property path, see Module:PropertyPath
• frame.args[3] : target item

returns true if the first item id is an instance of the second one, or false otherwise

isInstance(frame)

• frame.args[1] : test instance item id
• frame.args[2] : class item id

shortcurt for a test path of "P31/P279*"

returns "true" if the first item id is an instance of the second one, or "false" otherwise

Examples :

Is Pedro II of Brazil (Q156774)    a patrilinear child of John IV of Portugal (Q1060796)   
{{#invoke:PropertyPathTest|matches|http://www.wikidata.org/entity/Q156774|http://www.wikidata.org/entity/Q1060796|father*}}

• true

Is Pedro II of Brazil (Q156774)    a patrilinear child of Douglas Adams (Q42)   
{{#invoke:PropertyPathTest|matches|http://www.wikidata.org/entity/Q156774|http://www.wikidata.org/entity/Q42|father*}}

• false

{{#invoke:PropertyPathTest|isInstance|Q42|Q5}}

• true

{{#invoke:PropertyPathTest|isInstance|Q1|Q5}}

• false

Used by {{IsInstance}}, {{ReachableFrom}} or {{IsSubclass}}, {{HasOccupation}}.

Code

local ppath = require("Module:PropertyPath")
local ids = require("Module:IDs")


local p = {}

p.testInstance = function(item, class) 
	return ppath.matches( item, "P31/P279*", class)
end

p.isInstance = function(frame)
	local f = frame
	return p.testInstance(
		ids.qid_normalize(f.args[1]), 
		ids.qid_normalize(f.args[2])
	)
end

p.matches = function(frame)
	return ppath.matches(
		ids.qid_normalize(frame.args[1]), 
		frame.args[3], 
		ids.qid_normalize(frame.args[2]))
end


return p