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AQL currently has no support for recursive queries such as closure() or for "generic" iteration (only the specialized collect, select, reject, ...) For example, in the case of a parent-children relationship, OCL allowed users to write parent->closure(children) to get *all* children of 'parent', recursively. Likewise, we could use iterate as a generic iterator instead of specialized one. For example, classes->collect(name) could be written classes->iterate(c : Class ; acc : Set{} | acc->including(c.name))
New Gerrit change created: https://git.eclipse.org/r/63316
Th patch provides the closure() service but doesn't provide a complete validation for this service. We need to have access to variables to be able to compute the type of the lambda expression in a closure fashion. This will impact a lot of code to fix this. We should settle other patches before going that way...
Gerrit change https://git.eclipse.org/r/63316 was merged to [master]. Commit: http://git.eclipse.org/c/acceleo/org.eclipse.acceleo.git/commit/?id=6e7859b912842dd0723d032e9aa0f250b8ef4145
The closure() service is implemented. The iterate() service seems useless. It's hard to read and maintain in expressions. We rather prefer a custom Java service approach. If you want the iterate() service to be implemented reopen this bug.
