Hi List, I have a few questions with regards to representing PicoLisp relations in UML notation:
1. Syntactic outlier? Is this: ,----------------------------------------------- | (rel ord (+Dep +Joint) # Order | (itm) | pos (+Ord) ) `----------------------------------------------- a syntactic outlier in PicoLisp code, or do I have to expect this to happen? Its _much_ more difficult to deal with this via regexp than with this: ,-------------------------------------------------- | (rel ord (+Dep +Joint) (itm) pos (+Ord)) # Order `-------------------------------------------------- [Probably not, see +Bag example below (*sigh**) ...] 2. Link, Joint and Bag How to represent in UML notation, and how to determine the 'quantification' (one-to-many etc.)? - Link Aggregation? ,----------------------------------- | (rel exp (+List +Link) NIL (+Abc)) # why the NIL? `----------------------------------- => 1 --- * ? ,----------------------------------- | (rel exp (+Link) (+Abc)) `----------------------------------- => 1 --- 1 ? - Joint Simple bidirectional Association? ,------------------------------------------ | (rel ord (+Dep +Joint) (itm) pos (+Ord)) # why the (itm) ? `------------------------------------------ => 1 --- 1 ? ,------------------------------------------ | (rel ord (+Dep +List +Joint) pos (+Ord)) `------------------------------------------ => 1 --- * ? ,------------------------------------------ | (rel ord (+Dep +List +Joint) pos (+List +Ord)) # possible? `------------------------------------------ => * --- * ? - Bag Aggregation? Composition? ,----------------------------------- | (rel pos (+List +Bag) # Positions | ((+Ref +Link) NIL (+Item)) # Item | ((+Number) 2) # Price | ((+Number)) # Quantity | ((+String)) # Memo text | ((+Number) 2) ) # Total amount `----------------------------------- How to present this in UML? Its like 1 Link and 4 unnamed attributes, I'm not sure how to translate to a UML class diagram? -- cheers, Thorsten -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
