gistfile1.coffee

model =
  #Contains a hash of all the valid input field URI's, the key is the URI, the value  
  #contains a hash of instances of inputFields, for this hash the key is a combination of URI 
  #and GUID, we need this to know the diffirence between "INTEREST_RATE" for BankAccount1, 
  #vs "INTEREST_RATE" for BankAccount2.  We get the GUID from the GUID generated in the UI
  inputFields: {}
  
  
  #contains a hash of all the valid output field URI's, the keys is the URI, the value
  #contains a hash of instances of ouputFields, key is a combination of URI and GUID,
  outputFields: {}
  
  #contains a hash of all unique formulas.  Key is the URI for the formula, the value 
  #is an object with the text representation of the formula, and a Js version of the function
  formulas: {}
  
  #maps input fields to all the output fields that use them, to be used for cascading updates 
  dependancies: {}
  
  addInstance: (uri, id, value) ->
    #if we don't have this uri do nothing, probably should throw an exception here
    return  unless uri of inputFields
    inputFields[uri][guid] = value
    
  getInstance: (uri, id) ->
    #if we don't have this uri do nothing, probably should throw an exception here
    return  unless uri of inputFields
    return inputFields[uri][guid]  if guid of inputFields[uri]
    
  deleteInstance: (uri, id) ->
    {}