Sha256: 19f80c7fd22a19cb8372fa124ab4e8552608614a10152d321d8f2aae3b5b54cb
Contents?: true
Size: 989 Bytes
Versions: 9
Compression:
Stored size: 989 Bytes
Contents
module PgSearch
module Features
class Trigram < Feature
def self.valid_options
super + [:threshold]
end
def conditions
if options[:threshold]
Arel::Nodes::Grouping.new(
similarity.gteq(options[:threshold])
)
else
Arel::Nodes::Grouping.new(
Arel::Nodes::InfixOperation.new("%", normalized_document, normalized_query)
)
end
end
def rank
Arel::Nodes::Grouping.new(similarity)
end
private
def similarity
Arel::Nodes::NamedFunction.new(
"similarity",
[
normalized_document,
normalized_query
]
)
end
def normalized_document
Arel::Nodes::Grouping.new(Arel.sql(normalize(document)))
end
def normalized_query
sanitized_query = connection.quote(query)
Arel.sql(normalize(sanitized_query))
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems