[SERVER-25607] Differentiate between multi-stage and single-stage aliases Created: 15/Aug/16 Updated: 02/Sep/16 Resolved: 16/Aug/16 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Aggregation Framework |
| Affects Version/s: | None |
| Fix Version/s: | 3.3.12 |
| Type: | Improvement | Priority: | Major - P3 |
| Reporter: | Carly Robison | Assignee: | Carly Robison |
| Resolution: | Done | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Backwards Compatibility: | Fully Compatible |
| Participants: |
| Description |
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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. |
| Comments |
| Comment by Githook User [ 16/Aug/16 ] |
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Author: {u'username': u'carlyrobison', u'name': u'Carly Robison', u'email': u'crobison@caltech.edu'}Message: |