Class: CPEE::Transformation::Source::BPMN2

Inherits:
Object
  • Object
show all
Defined in:
lib/cpee/transformation/bpmn2.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(xml) ⇒ BPMN2

{{{



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# File 'lib/cpee/transformation/bpmn2.rb', line 31

def initialize(xml) #{{{
  Node.class_variable_set(:@@niceid,  {})

  @tree = Tree.new
  @start = nil

  doc = XML::Smart.string(xml)
  doc.register_namespace 'bm',  "http://www.omg.org/spec/BPMN/20100524/MODEL"

  @dataelements = {}
  @endpoints = {}
  @graph = Graph.new

  extract_dataelements(doc)
  extract_endpoints(doc)
  extract_nodelink(doc)

  if @start.nil?
    @traces = Traces.new [[]]
  else
    @traces = Traces.new [[@start]]
  end
end

Instance Attribute Details

#dataelements ⇒ Object (readonly)

Returns the value of attribute dataelements.



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# File 'lib/cpee/transformation/bpmn2.rb', line 29

def dataelements
  @dataelements
end

#endpoints ⇒ Object (readonly)

Returns the value of attribute endpoints.



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# File 'lib/cpee/transformation/bpmn2.rb', line 29

def endpoints
  @endpoints
end

#graph ⇒ Object (readonly)

Returns the value of attribute graph.



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# File 'lib/cpee/transformation/bpmn2.rb', line 29

def graph
  @graph
end

#start ⇒ Object (readonly)

Returns the value of attribute start.



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# File 'lib/cpee/transformation/bpmn2.rb', line 29

def start
  @start
end

#traces ⇒ Object (readonly)

Returns the value of attribute traces.



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# File 'lib/cpee/transformation/bpmn2.rb', line 29

def traces
  @traces
end

#tree ⇒ Object (readonly)

Returns the value of attribute tree.



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# File 'lib/cpee/transformation/bpmn2.rb', line 29

def tree
  @tree
end

Instance Method Details

#extract_dataelements(doc) ⇒ Object

}}}



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# File 'lib/cpee/transformation/bpmn2.rb', line 55

def extract_dataelements(doc) #{{{
  doc.find("/bm:definitions/bm:process/bm:property[bm:dataState/@name='cpee:dataelement']").each do |ref|
    if ref.attributes['itemSubjectRef']
      doc.find("/bm:definitions/bm:itemDefinition[@id=\"" + ref.attributes['itemSubjectRef'] + "\"]").each do |sref|
        @dataelements[ref.attributes['name']] = sref.attributes['structureRef'].to_s
      end
    else
      @dataelements[ref.attributes['name']] = ''
    end
  end
end

#extract_endpoints(doc) ⇒ Object

}}}



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# File 'lib/cpee/transformation/bpmn2.rb', line 67

def extract_endpoints(doc) #{{{
  doc.find("/bm:definitions/bm:process/bm:property[bm:dataState/@name='cpee:endpoint']/@itemSubjectRef").each do |ref|
    doc.find("/bm:definitions/bm:itemDefinition[@id=\"" + ref.value + "\"]/@structureRef").each do |sref|
      @endpoints[ref.value] = sref.value
    end
  end
end

#extract_nodelink(doc) ⇒ Object

}}}



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# File 'lib/cpee/transformation/bpmn2.rb', line 75

def extract_nodelink(doc) #{{{
  doc.find("/bm:definitions/bm:process/bm:*[@id and @name and not(@itemSubjectRef) and not(name()='sequenceFlow')]").each do |e|
    n = Node.new(self.object_id,e.attributes['id'],e.qname.name.to_sym,e.attributes['name'].strip,e.find('count(bm:incoming)'),e.find('count(bm:outgoing)'))

    if e.attributes['scriptFormat'] != ''
      n.script_type = e.attributes['scriptFormat']
    end

    e.find("bm:property[@name='cpee:endpoint']/@itemSubjectRef").each do |ep|
      n.endpoints << ep.value
    end
    e.find("bm:property[@name='cpee:method']/@itemSubjectRef").each do |m|
      n.methods << m.value
    end
    e.find("bm:script").each do |s|
      n.script ||= ''
      n.script << s.text.strip
    end
    e.find("bm:ioSpecification/bm:dataInput").each do |a|
      name = a.attributes['name']
      value = a.attributes['itemSubjectRef']
      unless name.nil?
        if @dataelements.keys.include?(value)
          n.arguments[name] = 'data.' + value
        else
          n.arguments[name] = value
        end
      end
    end
    e.find("bm:ioSpecification/bm:dataOutput").each do |a|
      ref = a.attributes['id']
      e.find("bm:dataOutputAssociation[bm:sourceRef=\"#{ref}\"]").each do |d|
        n.script_var = ref
        n.script_id = d.find("string(bm:targetRef)")
      end
    end

    @graph.add_node n
    @start = n if n.type == :startEvent && @start == nil
  end

  # extract all sequences to a links
  doc.find("/bm:definitions/bm:process/bm:sequenceFlow").each do |e|
    source = e.attributes['sourceRef']
    target = e.attributes['targetRef']
    cond = e.find('bm:conditionExpression')
    @graph.add_link Link.new(source, target, cond.empty? ? nil : cond.first.text.strip)
  end

  @graph.clean_up do |node|
    if node.type == :scriptTask && (x = @graph.find_script_id(node.id)).any?
      x.each do |k,n|
        n.script = node.script
        n.script_type = node.script_type
      end
      true
    else
      false
    end
  end
end