scotdalton/exlibris-primo

module Exlibris
  module Primo
    module WebService
      module Request
        module QueryTerms
          attr_writer :boolean_operator

          def boolean_operator
            @boolean_operator ||= "AND"
          end
          
          # 
          # Returns a lambda that takes a Nokogiri::XML::Builder as an argument
          # and appends query terms XML to it.
          # 
          def query_terms_xml
            bool_operator = boolean_operator
            lambda do |xml|
              xml.QueryTerms {
                xml.BoolOpeator bool_operator
                query_terms.each do |query_term|
                  xml << query_term.to_xml
                end
              }
            end
          end
          protected :query_terms_xml

          def query_terms
            @query_terms ||= []
          end

          def add_query_term(value, index, precision="contains")
            query_terms << QueryTerm.new(:value => value, :index => index, :precision => precision)
          end
        end
      end
    end
  end
end