Module: Marshaller

Defined in:
lib/Marshaller.rb

Instance Method Summary collapse

Instance Method Details

#buildXMLDocFromRailsParms(nodeName, params, nvp_format, myagg, info, &block) ⇒ Object 



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# File 'lib/Marshaller.rb', line 36

def buildXMLDocFromRailsParms(nodeName,params,nvp_format,myagg,info,&block)
    if (myagg.length == 0)
      xml =  createNode(nodeName.to_s,params,nvp_format,myagg,&block)
    else
      xml =  createNode(myagg.to_s,params,nvp_format,myagg,&block)
    end
    xml << expandRelationships(:has_one,nodeName,params,nvp_format,myagg,info,&block)
    xml << expandRelationships(:has_many,nodeName,params,nvp_format,myagg,info,&block)

    xml = "" if !(xml.length > 0)
    xml = "<#{nodeName}>#{xml}</#{nodeName}>" if (xml.length > 0 and !nvp_format)
    xml
end

#collectValue(child, en, pn) ⇒ Object 



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# File 'lib/Marshaller.rb', line 215

def collectValue(child,en,pn)
 #there are issues with this approach to multi-occ returns
 #this will get the client stuff running
 #will now switch to using the cardinalities in the model
 #by stepping up one level in the tree and reviewing all cardinalties of
 #contained relations which will include the current subject
 if (!@pHashes.has_key?(en))
   @pHashes[en] = HashWithIndifferentAccess.new
   @pHashes[en][pn] = unescape(child.to_s).strip
 else
   if @pHashes[en].is_a?(Array)
     if (!@pHashes[en][@pHashes[en].length-1].has_key?(pn))
       @pHashes[en][@pHashes[en].length-1][pn] = unescape(child.to_s).strip
     else
       h = HashWithIndifferentAccess.new
       h[pn] = unescape(child.to_s).strip
       @pHashes[en].push(h)
     end
   elsif @pHashes[en][pn]
     existingHash = @pHashes[en]
     @pHashes[en] = Array.new
     @pHashes[en].push(existingHash)
     h = HashWithIndifferentAccess.new
     h[pn] = unescape(child.to_s).strip
     @pHashes[en].push(h)
   else
     @pHashes[en][pn] = unescape(child.to_s).strip
   end
 end
end

#createNode(table, params, nvp_format, myagg, &block) ⇒ Object 



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# File 'lib/Marshaller.rb', line 50

def createNode(table,params,nvp_format,myagg,&block)
  xml=""
  values = params[table]
  if ( values != nil) then
    fullName = expandedName(myagg)
    if (values.is_a?(String))
        if (nvp_format)
          xml << block.call("#{fullName}Value",values.strip)
        else
          xml << block.call("Value",values.strip)
        end
    else
      values.each_key do |key|
        if (values[key].length > 0)
          if (nvp_format)
            xml << block.call("#{fullName}#{key}",values[key])
          else
            xml << block.call(key,values[key])
          end
        end
      end
    end
  end
  xml 
end

#createXMLMessage(relation, params, nvp_format, &block) ⇒ Object 



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# File 'lib/Marshaller.rb', line 28

def createXMLMessage(relation,params,nvp_format,&block)
  @pqbNodes = Array.new
  #dump the hash table rails builds for use in RTE message building test harness
  #open('garyparams','w') { |f| YAML.dump(params, f) }
  xml = buildXMLDocFromRailsParms(relation,params,nvp_format,Array.new,"",&block)
  xml
end

#expandedName(myagg) ⇒ Object 



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# File 'lib/Marshaller.rb', line 76

def expandedName(myagg)
    fullName = ""
    myagg.each do |a|
      fullName << "#{a.to_s.gsub(/[0-9]/,"")}_"
    end
    fullName
end

#expandRelationships(cardinality, nodeName, params, nvp_format, myagg, info, &block) ⇒ Object 



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# File 'lib/Marshaller.rb', line 96

def expandRelationships(cardinality,nodeName,params,nvp_format,myagg,info,&block)
  xml = ""
  associations = {}
  #strip out subscripts when accessing the generated data dictionary
  if (myagg.length == 0)
   entityName = nodeName.to_s.gsub(/[0-9]/,"")
  else
   entityName = myagg.to_s.gsub(/[0-9]/,"")
  end
  begin
    associations = eval("#{entityName}.reflect_on_all_associations(:#{cardinality.id2name})")
  rescue
    raise "#{entityName} does not exist - please check the entity and coverage library definitions\nPerhaps you intended:#{info}"
  end
  
  associations.each do |ass|
    klass = eval(ass.name.id2name)
    if (myagg.last.to_s.include?("PremiumQuoteBreakdown") and (klass.nodeName == "GrossAmount"))
      @pqbNodes.push("#{expandedName(myagg)}#{klass.nodeName}")
    end
    if (myagg.to_s == "PremiumQuoteBreakdown" and
          (klass.nodeName == "Amount" or klass.nodeName == "IPTAmount" or klass.nodeName == "IPTPercent" ) )
      @pqbNodes.push("#{expandedName(myagg)}#{klass.nodeName}")
    end
    myagg.push(klass.nodeName)
    #puts "THE NODENAME:#{nodeN}\n AND THE REAL HASHNAME: #{ass.name.id2name}\n OUR DERIVED EQUIVALENT:#{myagg}"
    if (cardinality.id2name == "has_one")
      xml << buildXMLDocFromRailsParms(klass.nodeName,params,nvp_format,myagg,ass.name.id2name,&block)
    else
      #make this call as many times as there are instances of this has_many type
      #make sure we add in the subscript each time into the myagg string first though
      #use findDimension to look inside the rails dispatcher generated hash table of the http paramaters
      #to determine the number of entries for a given multiply occuring complex type
      findDimension(params,myagg).times do |i|
        myagg.push(myagg.pop.to_s.gsub(/[0-9]/,"")+"#{i}")
        xml << buildXMLDocFromRailsParms(klass.nodeName,params,nvp_format,myagg,ass.name.id2name,&block)
      end
    end
    myagg.pop
  end
  xml
end

#findDimension(params, myagg) ⇒ Object 



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# File 'lib/Marshaller.rb', line 139

def findDimension(params,myagg)   
  low = 0
  high = 50

  while (high-low) > 1
    middle = (low + high) / 2
    str = "#{myagg}#{middle}"
    if hashEntryExists(params,str)
      low = middle
    else
      high = middle
    end
  end
  #indexing starts at 0 so need to add 1 to calculated dimension
  low = low + 1
  #puts "DIMENSION for #{myagg} is #{low}"
  low
end

#getRAILSClassRequiresForProductModelFromOilDef(product) ⇒ Object

generates ruby require statements for each of the classes for the data model this is then eval’ed in the code to introduce the models into the sessions



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# File 'lib/Marshaller.rb', line 17

def getRAILSClassRequiresForProductModelFromOilDef(product)
    require 'ProductInterpreter'
    oilfile = File.join("#{DY_MODELS}/#{product}/DSL/product.oil")
    open(oilfile) {|f| @contents = f.read }
    dsl = @contents.to_s
    if (!dsl.include?("product :#{product}"))
      raise "#{DY_MODELS}/#{product}/DSL/product.oil does NOT contain a product defintion for #{product}"
    end
    productModel = ProductInterpreter.execute(dsl)
end

#hashEntryExists(params, str) ⇒ Object 



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# File 'lib/Marshaller.rb', line 158

def hashEntryExists(params,str)
  params.each do |key, value|
    if (key.match(str))
      return true
    end
  end
  return false
end

#prepareModels(product, xml) ⇒ Object 



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# File 'lib/Marshaller.rb', line 167

def prepareModels(product,xml)
  #identify model parts for which we have data
  #and instantiate classes for it
  @pHashes = {}
  doc = REXML::Document.new(xml)   
  xml_node_to_hash([],doc.root_node,product)
  @pHashes
end

#unescape(str) ⇒ Object 



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# File 'lib/Marshaller.rb', line 246

def unescape(str)
 return CGI.unescapeHTML(str)
end

#walk_class_hierarchy(entityName) ⇒ Object 



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# File 'lib/Marshaller.rb', line 84

def walk_class_hierarchy(entityName)
  children = []
  associations = eval("#{entityName}.reflect_on_all_associations(:has_one)")
  associations.each do |ass|
     children.push(ass.name.id2name)
  end
  associations = eval("#{entityName}.reflect_on_all_associations(:has_many)")
  associations.each do |ass|
     children.push(ass.name.id2name)
  end
  children
end

#xml_node_to_hash(path, node, product, parent_namespaces = {}) ⇒ Object

:nodoc



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# File 'lib/Marshaller.rb', line 176

def xml_node_to_hash(path, node,product, parent_namespaces={}) #:nodoc
   this_node = {}
   namespaces = parent_namespaces.dup
   node.attributes.each do |name, value|
     case name
     when 'xmlns'
       (namespaces['@xmlns'] ||= {})['$'] = value
     when /^xmlns:(.*)/
       (namespaces['@xmlns'] ||= {})[$1] = value
     else
       this_node["@#{name}"] = value
     end
   end
   node.each_child do |child|
     case child.node_type
     when :element
       key, value = child.expanded_name, xml_node_to_hash(path.clone.push(child.expanded_name),child, product, namespaces)
     when :text
       if unescape(child.to_s).strip.length > 0
         pn,en = "#{path.pop}","#{path}".gsub(product,'')
         #puts "VALUES are:#{en},#{pn}=#{unescape(child.to_s).strip}"
         collectValue(child,en,pn)
       end
       key, value = '$', unescape(child.to_s).strip
       next if value.empty?
     end
     current = this_node[key]
     case current
     when Array
       this_node[key] << value
     when nil
       this_node[key] = value
     else
       this_node[key] = [current.dup, value]
     end
   end
   return this_node.merge(namespaces)
end