Re: [Pharo-dev] Querying hierarchical entities in Voyage

Sept. 14, 2015


      Thanks Norbert!
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On 14 Sep 2015, at 17:31, Norbert Hartl <norbert@hartl.name> wrote:
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Am 14.09.2015 um 15:41 schrieb Yuriy Tymchuk <yuriy.tymchuk@me.com>:
Hi,
how can I query all the objects from a hierarchy? Should a do separate query for each subclass and then concatenate the results? Is there a more efficient solution?
You can put something like that in your base class
mongoContainer
  <mongoContainer>
  ^ VOMongoContainer new
      collectionName: 'user';
      yourself
So every subclass will be stored in the user collection as well. If you query on the base class you will get all subclasses as well.
Norbert
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Also what is the place to read about Voyage?