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| author | Maria van Keulen <maria.vankeulen@mongodb.com> | 2019-09-10 21:59:36 +0000 |
|---|---|---|
| committer | evergreen <evergreen@mongodb.com> | 2019-09-10 21:59:36 +0000 |
| commit | bfac8d909877600c395dccc575effbfbae76a82a (patch) | |
| tree | 92a6502d4ee5e0b2168e4bbde5e0313a47df7381 /src/mongo/db/multi_key_path_tracker.h | |
| parent | 3f6ba750fc8374968c3c06e31c67ac2839e9a736 (diff) | |
| download | mongo-bfac8d909877600c395dccc575effbfbae76a82a.tar.gz | |
SERVER-39708 Optimize Btree multikey updates
Diffstat (limited to 'src/mongo/db/multi_key_path_tracker.h')
| -rw-r--r-- | src/mongo/db/multi_key_path_tracker.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/mongo/db/multi_key_path_tracker.h b/src/mongo/db/multi_key_path_tracker.h index 1fb1ee20fac..b155bc1fe58 100644 --- a/src/mongo/db/multi_key_path_tracker.h +++ b/src/mongo/db/multi_key_path_tracker.h @@ -63,6 +63,12 @@ public: static void mergeMultikeyPaths(MultikeyPaths* toMergeInto, const MultikeyPaths& newPaths); + /** + * Returns whether paths contains only empty sets, i.e., {{}, {}, {}}. This includes the case + * where the MultikeyPaths vector itself has no elements, e.g., {}. + */ + static bool isMultikeyPathsTrivial(const MultikeyPaths& paths); + // Decoration requires a default constructor. MultikeyPathTracker() = default; |