# [ref_impl_eiffel] [427] Add support for detecting if OG_* objects and C_* objects are leaves or not; this allows a proper leaf path list to be constructed, which is the basis of path comparisons for specialised archetypes with respect to parents.

**Category:** [Reference Implementation: Eiffel (archive)](https://discourse.openehr.org/c/reference-implementation-eiffel-archive/161)
**Created:** 2007-12-29 23:57 UTC
**Views:** 3
**Replies:** 0
**URL:** https://discourse.openehr.org/t/ref-impl-eiffel-427-add-support-for-detecting-if-og-objects-and-c-objects-are-leaves-or-not-this-allows-a-proper-leaf-path-list-to-be-constructed-which-is-the-basis-of-path-comparisons-for-specialised-archetypes-with-respect-to-parents/13279

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## Post #1 by @svn1

Revision: 427
Author:   thomas\.beale

Log Message:

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**Canonical:** https://discourse.openehr.org/t/ref-impl-eiffel-427-add-support-for-detecting-if-og-objects-and-c-objects-are-leaves-or-not-this-allows-a-proper-leaf-path-list-to-be-constructed-which-is-the-basis-of-path-comparisons-for-specialised-archetypes-with-respect-to-parents/13279
**Original content:** https://discourse.openehr.org/t/ref-impl-eiffel-427-add-support-for-detecting-if-og-objects-and-c-objects-are-leaves-or-not-this-allows-a-proper-leaf-path-list-to-be-constructed-which-is-the-basis-of-path-comparisons-for-specialised-archetypes-with-respect-to-parents/13279