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  1. Core Server
  2. SERVER-25607

Differentiate between multi-stage and single-stage aliases

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Details

    • Improvement
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 3.3.12
    • Aggregation Framework
    • None
    • Fully Compatible

    Description

      Aliases implement various aggregation stages. Some, like $bucket and $count, are implemented as two successive stages, while others, like $project, $addFields, and $replaceRoot are implemented as cases of the SingleDocumentTransformation stage. These cases can be registered as regular document sources, so that their createFromBson constructors return a pointer.

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            carly.robison Carly Robison
            carly.robison Carly Robison
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              Updated:
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