Sha256: fb1969703729ec5da853cde9ce57d1240b84ae2a908f1fb9d7b451e0239c5c53
Contents?: true
Size: 921 Bytes
Versions: 8
Compression:
Stored size: 921 Bytes
Contents
module PgSearch
module Features
class Trigram < Feature
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
8 entries across 8 versions & 1 rubygems