BSA 1.0 NO IDEA Avatar
  1. OMG Issue

BSA — inheritance in annotation iterators

  • Key: BSA-46
  • Legacy Issue Number: 3875
  • Status: closed  
  • Source: Japan Biological Informatics Consortium ( Martin Senger)
  • Summary:

    During BSA implementation we have found that SeqAnnotationIterator does
    not inherit from AnnotationIterator, and that SeqAnnotationIterator is
    not used explicitly anywhere in the spec. Please can you remind me why it
    is like that, or confirm my feeling that something is missing there?

    I see several possible solutions of this issue - ca we discuss them
    briefly before going to the "resolution?

    1) Nothing is wrong in current spec, I have just missed something.

    2) The SeqAnnotationIterator will inherit from AnnotationIterator and its
    next() and next_n() methods will be renamed to something
    like next_seq_anno() and next_n_seq_anno(). Obviously, there would have be
    explanation that methods next() and next_seq_anno() should behave the
    same. Not too nice, and not too OO.

    3) The SeqAnnotationIterator will inherit from AnnotationIterator but will
    remain empty. Does this bring "more type safety" - that is the claimed
    reason why we have SeqAnnotationIterator at the first place.

    4) The SeqAnnotationIterator will be removed completely.

    5) BioSequence interface will get an addition method get_seq_annotations
    returning in out parameter a SeqAnnotationIterator (no inheritance between
    iterators needed).

    To be honest I cannot make my mind which solution I would prefer at the
    moment. Probably the ad 1).

  • Reported: BSA 1.0b1 — Tue, 26 Sep 2000 04:00 GMT
  • Disposition: Resolved — BSA 1.0
  • Disposition Summary:


  • Updated: Fri, 6 Mar 2015 20:57 GMT