class PgSearch::Features::TSearch

def initialize(query, options, columns, model, normalizer)
  @query = query
  @options = options || {}
  @model = model
  @columns = columns
  @normalizer = normalizer
  if @options[:prefix] && @model.connection.send(:postgresql_version) < 80400
    raise PgSearch::NotSupportedForPostgresqlVersion.new(<<-MESSAGE.gsub /^\s*/, '')
      Sorry, {:using => {:tsearch => {:prefix => true}}} only works in PostgreSQL 8.4 and above.")
    MESSAGE
  end
end