Match the query string against all indexed documents

See match_vector.

Property definitions

vsm $ StringIndex :: match_string
	# Match the `query` string against all indexed documents
	#
	# See `match_vector`.
	fun match_string(query: String): Array[IndexMatch[DOC]] do
		var vector = parse_string(query)
		var doc = new Document("", "", vector)
		return match_vector(doc.terms_frequency)
	end
lib/vsm/vsm.nit:231,2--238,4