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  1. OMG Issue

PLM — Intermediate Queries

  • Key: PLM-4
  • Legacy Issue Number: 7829
  • Status: open  
  • Source: Zentrum fuer Graphische Datenverarbeitung e.V. ( Steffen Nowacki)
  • Summary:

    The result of the concatenation of queries
    is defined as the union of the result of the
    single queries.

    Some use cases needs another semantic of concatenated queries.
    F.i. for the Start node identification use case
    the set of Items selected by an Item_query
    have to be filtered by an (optional)
    following Item_version_query.
    In this case the ItemQuery doesn't contribute directly to the
    result of the whole concatenated query
    but is only an intermediate step to define the start nodes
    of the following Item_version_query.

    To switch the semamtics of concatenation between

    A) union of single result
    B) intermediate step without contribution to the result
    but with contribution to the start nodes of the next queries
    a flag should be added to the class Query called "Intermediate".

  • Reported: PLM 1.0b1 — Fri, 1 Oct 2004 04:00 GMT
  • Updated: Fri, 6 Mar 2015 20:58 GMT