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  1. OMG Issue

OCL25 — Introduce a Safe Navigation Operator

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  • Key: OCL25-154
  • Legacy Issue Number: 18516
  • Status: open  
  • Source: Model Driven Solutions ( Dr. Edward Willink)
  • Summary:

    Languages such as Groovy have found it helpful to intrioduce the safe navigation operator ?: so that navigation over null yields null rather than a problem (invalid in OCL).

    In OCL it could be a pure syntax sugar:

    (x?.y) = (if x == null then null else x.y endif)

    or perhaps an additional PropertyCallExp operator
  • Reported: OCL 2.3.1 — Fri, 1 Mar 2013 05:00 GMT
  • Updated: Sat, 19 Jan 2019 11:40 GMT