Contents

require "rubygems"
require "net/http"
require "hpricot"

module Savon

  # Savon::Wsdl gets, parses and represents the WSDL.
  class Wsdl

    # The namespace URI.
    attr_reader :namespace_uri

    # SOAP service methods.
    attr_reader :service_methods

    # Choice elements.
    attr_reader :choice_elements

    # Initializer expects an endpoint +uri+ and an +http+ connection instance,
    # then gets and parses the WSDL at the given URI.
    #
    # === Parameters
    #
    # * +uri+ - The URI of the WSDL.
    # * +http+ - The Net::HTTP connection instance to use.
    def initialize(uri, http)
      @uri, @http = uri, http
      get_wsdl

      parse_namespace_uri
      parse_service_methods
      parse_choice_elements
    end

    # Returns the response body from the WSDL request.
    def to_s
      @response.body
    end

  private

    # Gets the WSDL at the given URI.
    def get_wsdl
      @response = @http.get("#{@uri.path}?#{@uri.query}")
      @doc = Hpricot.XML(@response.body)

      if !@doc.at("//wsdl:definitions")
        raise ArgumentError, "Unable to find WSDL at given endpoint URI."
      end
    end

    # Parses the WSDL for the namespace URI.
    def parse_namespace_uri
      node = @doc.at("//wsdl:definitions")
      @namespace_uri = node.get_attribute("targetNamespace") if node
    end

    # Parses the WSDL for available SOAP service methods.
    def parse_service_methods
      @service_methods, node = [], @doc.search("//soap:operation")
      if node
        node.each do |operation|
          service_methods << operation.parent.get_attribute("name")
        end
      end
    end

    # Parses the WSDL for choice elements.
    def parse_choice_elements
      @choice_elements, node = [], @doc.search("//xs:choice//xs:element")
      if node
        node.each do |choice|
          name = choice.get_attribute("ref").sub(/(.+):/, "")
          choice_elements << name unless @choice_elements.include? name
        end
      end
    end

  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
smacks-savon-0.1.0	lib/savon/wsdl.rb
smacks-savon-0.1.1	lib/savon/wsdl.rb