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  1. Core Server
  2. SERVER-66594

Extend 'DocumentSourceUnionWith' class for external data sources

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    • Icon: Task Task
    • Resolution: Done
    • Icon: Major - P3 Major - P3
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    • QE 2022-06-13

    Description

      Sub items:

      • Extend the each url with 'size' information
      • Extend the $unionWith IDL: document_source_union_with.idl
      • When we see an external data source definition in $unionWith’s coll field, we create  placeholder collection(s) temporarily inside the ‘DocumentSourceUnionWith’ class. Each url will be mapped to a separate placeholder collection. These placeholder collections will be destroyed when the ‘DocumentSourceUnionWith’ object is destroyed. The placeholder collections can be created by calling ‘createCollection’ command with an auto-generated collection name on ‘DBDirectClient’ object. When a placeholder collection is created, information about the external data source is passed to the underlying ‘WiredTigerRecordStore’ object.

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            yoonsoo.kim@mongodb.com Yoon Soo Kim
            yoonsoo.kim@mongodb.com Yoon Soo Kim
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