Class: MOLGENIS::Parser

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

Instance Method Summary collapse

Instance Method Details

#create_model(element, version) ⇒ Object

:nodoc:



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# File 'lib/molgenis_parser.rb', line 31

def create_model(element, version) # :nodoc:
  model = MolgenisModel.new
  model.name = element.attributes['name']
  puts element.attributes['name'] + model.name
  model.version = version
  model.description = ""
  element.find("description").each { |desc| 
    desc.children.each { |el| 
      model.description = model.description + el.to_s
    }
  }     
  
  color = 0
  parse_entities(element.find("entity"),model, color)
  
  element.find("module").each { |module_xml|
  
    module_obj = ModuleModel.new
    module_attributes = module_xml.attributes
    module_obj.name = module_attributes["name"]
    entities = module_xml.find("entity")
    
    color += 1
    module_obj.color = color
    parse_entities(entities,module_obj,color)
    
    model.modules << module_obj
  }
 
  return model
end

#parse(molgenis_src) ⇒ Object

Returns the model for the given molgenis_model. The method accepts objects of classes File, StringIO and String only.

Usage

foo = … # stuff to initialize foo here bar = MOLGENIS_MODEL:Parser.new.parse(foo)



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# File 'lib/molgenis_parser.rb', line 11

def parse(molgenis_src)
  case molgenis_src.class.to_s
    when /^string$/i
    document = LibXML::XML::Parser.string(molgenis_src).parse
    when /^stringio|file$/i
    molgenis_src.rewind
    document = LibXML::XML::Parser.string(molgenis_src.read).parse
  else
    raise "Error parsing file."
  end
  
  root = document.root
  return nil if(root.name != "molgenis")
  
  raise "Doesn't appear to be a MOLGENIS model" if root.name != "molgenis"
  version = root["version"]
  
  create_model(root, version)
end

#parse_entities(entities, module_obj, colorno) ⇒ Object 



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# File 'lib/molgenis_parser.rb', line 63

def parse_entities(entities,module_obj,colorno)
   if entities
    entities.each do |entity_xml|
      entity = EntityModel.new
      entity.module_name = module_obj.name
      entity_attributes = entity_xml.attributes
      entity.name = entity_attributes["name"]
      entity.color = colorno
      entity_attributes["implements"].split(",").each { |interface|
        entity.implements << interface
      } if !entity_attributes["implements"].nil?
      entity.extends = entity_attributes["extends"]

      entity_xml.find("field").each do |field_xml|
        field = FieldModel.new
        field_attributes = field_xml.attributes
        field.name = field_attributes["name"]
        field.type = field_attributes["type"]
        if(field_attributes["xref_field"])
          split = field_attributes["xref_field"].split(".")
          if(split.size == 2)
            field.xref_entity = split[0]
            field.xref_field = split[1]
          else
            field.xref_field = split[0]
            field.xref_entity = field_attributes["xref_entity"]
          end
        end
        entity.fields << field
      end
      module_obj.entities << entity
    end
  end
end