class Nexpose::Scan
This class represents each of the /NexposeReport/scans/scan elements in the Nexpose
Full XML document.
It provides a convenient way to access the information scattered all over the XML in attributes and nested tags.
Instead of providing separate methods for each supported property we rely on Ruby's method_missing
to do most of the work.
Public Class Methods
new(xml_node)
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Accepts an XML node from Nokogiri::XML.
# File lib/nexpose/scan.rb, line 12 def initialize(xml_node) @xml = xml_node end
Public Instance Methods
method_missing(method, *args)
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This method is invoked by Ruby when a method that is not defined in this instance is called.
In our case we inspect the @method@ parameter and try to find the attribute, simple descendent or collection that it maps to in the XML tree.
Calls superclass method
# File lib/nexpose/scan.rb, line 39 def method_missing(method, *args) # We could remove this check and return nil for any non-recognized tag. # The problem would be that it would make tricky to debug problems with # typos. For instance: <>.potr would return nil instead of raising an # exception unless supported_tags.include?(method) super return end # First we try the attributes. In Ruby we use snake_case, but in XML # CamelCase is used for some attributes translations_table = { :scan_id => 'id', :start_time => 'startTime', :end_time => 'endTime' } method_name = translations_table.fetch(method, method.to_s) return @xml.attributes[method_name].value if @xml.attributes.key?(method_name) # not found return nil end
respond_to?(method, include_private=false)
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This allows external callers (and specs) to check for implemented properties
Calls superclass method
# File lib/nexpose/scan.rb, line 28 def respond_to?(method, include_private=false) return true if supported_tags.include?(method.to_sym) super end