throg

throg — Mon, 28 Jul 2008 20:13:44 GMT

I extended your model... I added a class Worker with a many to many assoc with Project, having WorkersInThisProject assoc end at the Worker end. I then added a derived assoc end called BigProjectsByParticipation (one way nav pointing to Project like yours) with a method added to Person as follows: private object BigProjectsByParticipationDerive() { IList<Project> res = new List <Project>(); foreach (Project pgrp in Projects) if (pgrp.WorkersInThisProject.Count > 2) res.Add(pgrp); return res; } As I added workers to projects with varying budgets and numbers of workers assigned the appropriate additions were made automatically to the Person autoform tabs for big projects by budgets and participation. What surprised me was how Intellisense picked up the assoc end and made available the Count method. It could be emphasized that the assoc end for the derived method must exactly match the method name Plus the word Derive for the derived assoc to work. Hope this is useful to someone.

Jonas Högström

Jonas Högström — Sat, 12 Sep 2009 10:48:59 GMT

In ECO5, the code will look like this:

 partial void BigProjectsDerive(ref List<Project> res)
 {
 res = new List<Project>();
 foreach (Project p in this.Projects)
 if (p.Budget > 10000)
 res.Add(p);
 }

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throg

Jonas Högström