Help/SemanticSearchPlugin

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Search for relations/attributes and its values.

page - relation::object. e.g list all cities: is_a::city => relation=is_a&s=city

We search for both a relation and if the search is valid for attributes also, and OR combine the result.

An attribute has just a value, which is a number, and which is for sure no pagename, and its value goes through some units unification. (not yet)

We can also do numerical comparison and unit lifting with attributes:

Limitation:

The backends can already do simple AND/OR combination of multiple relations and attributes to search for. Just the UI not. TODO: implement the AND/OR buttons. population < 1 million AND area > 50 km2
Due to attribute internals a relation search with matching attribute names will also find those attribute names, but not the values. You must explicitly search for attributes then.

The Advanced query can do a freeform query expression with multiple comparison and nesting.

Usage

<<SemanticSearch arguments>>

All PageList arguments, plus the following ones:

Argument	Description	Default value
s	linkvalue query string	*
page	which pages (glob allowed)	* (all)
relation	linkname. which relations.	all
attribute	linkname. which attributes.	all
attr_op	a funny written way for equality for pure aesthetic pleasure "All attributes which have this value set"	:=
units
case_exact	Boolean. If true, search with case exact.	true
regex	no word splitting, if no regex op is present, defaults to exact match	auto
noform	Boolean. If true, don't show form with results.	false
noheader	Boolean. If true, header should be omitted.	false
info	valid: pagename, relation, linkto, attribute, value and all other pagelist columns	false