[SERVER-5104] add support for QueryOptimizerCursor projections in ClientCursor Created: 27/Feb/12 Updated: 10/Dec/14 Resolved: 30/Apr/13 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Improvement | Priority: | Major - P3 |
| Reporter: | Aaron Staple | Assignee: | Unassigned |
| Resolution: | Won't Fix | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Participants: |
| Description |
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ClientCursor has a projection implementation that relies on the indexKeyPattern being constant. But with QueryOptimizerCursor (and MultiCursor) the indexKeyPattern may change over the course of iteration. These cursors can return a Projection::KeyOnly for projections but do not support the ClientCursor projection interface currently. Currently modifiedKeys will return true which should prevent a ClientCursor projection from being applied improperly. |
| Comments |
| Comment by Eliot Horowitz (Inactive) [ 30/Apr/13 ] |
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this exact code path is going away |