Class: Divine::GraphGenerator

Inherits:
Object
  • Object
show all
Defined in:
lib/divine/graph_generator/graph_generator.rb

Overview

Responsible for drawing ERD diagram corresponding to structs

Instance Method Summary collapse

Instance Method Details

Build links from relation map



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# File 'lib/divine/graph_generator/graph_generator.rb', line 59

def addLinks()
  @relations.each_pair do |src, trgs|
    trgs.each { |trg|
      @graph.add_edges( @nodes_map[trg], @nodes_map[src] )
    }
  end
end

#addNode(struct_name, struct_content) ⇒ Object

Add node to the graph

  • Args :

-struct_name- -> struct name
-struct_content- -> struct contents "Fields"



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# File 'lib/divine/graph_generator/graph_generator.rb', line 51

def addNode(struct_name, struct_content)
  @graph.add_nodes( "{ #{struct_name} | #{struct_content} }", "shape" => "record", "style" => "rounded")
end

#addRelation(src, trg) ⇒ Object

Add relation between nodes

  • Args :

-src- -> the source struct
-trg- -> the target struct



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# File 'lib/divine/graph_generator/graph_generator.rb', line 72

def addRelation(src, trg)
  if @relations.keys.include?(src)
    @relations[src].push(trg)
  else
    @relations[src] = [trg]
  end
end

#draw(path = "", file_name = "graph", format = "jpg") ⇒ Object

Draw Graph for current structs on $all_structs

  • Args :

-path- -> target path



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# File 'lib/divine/graph_generator/graph_generator.rb', line 14

def draw(path = "", file_name = "graph", format = "jpg")
  @relations = {}
  @nodes_map = {}
  @graph = GraphViz.new( :G, :type => :digraph )
  $all_structs.keys.each do |k|
      name = "Struct: #{k}"
      content = "Temp Contents"
      simple_fields = ""
      complex_fields = ""
      $all_structs[k][0].simple_fields.each  { |f|
        simple_fields  << "#{f.name}: #{f.type}\n"
      }
      $all_structs[k][0].complex_fields.each { |f|
        type = f.referenced_types.to_s.gsub(':','').gsub("[list,", "list[").gsub("[map,", "map[").gsub(/[\s]*/, "").gsub("[", "&lt;").gsub("]", "&gt;")
        $all_structs.keys.each do |l|
          if type.include?(l.to_s)
            addRelation(l, k)
          end
        end
        complex_fields << "#{f.name}: #{type}\n"
      }
      content = simple_fields + complex_fields
      @nodes_map[k] = addNode(name, content)
  end
  
  addLinks()

  # Generate output image
  @graph.output( format.to_sym => File.join(path, "#{file_name}.#{format}") )
end