On Thursday, March 14, 2013 3:39:41 PM UTC-5, Ellison Marks wrote:
>
> I'm pretty sure it does do merging, in the yaml backend at least.
>
> case resolution_type
> ...
> when :hash
> raise Exception, "Hiera type mismatch: expected Hash and got
> #{new_answer.class}" unless new_answer.kind_of? Hash
> answer ||= {}
> answer = new_answer.merge answer
>
>
Never mind. I somehow got a totally wrong idea of what hiera_hash() does.
I probably formed it by analogy with hiera_array(), but in fact they aren't
very analogous in that hiera_array() gives you all the data in your
hierarchy, whereas hiera_hash() gives you a digested form. It looks like
it does merge (but only shallowly until 1.2).
I got another surprise when studying the code, too: hiera_array() is much
less general than I thought. It collects only String and Array values, not
numeric, boolean, or hash values. It raises an exception if any of the
collected values for the give key is of any of the latter types, and it is
not clear to me why.
John
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