diff options
| author | Charlie Swanson <cswanson310@gmail.com> | 2015-10-23 16:04:42 -0400 |
|---|---|---|
| committer | Charlie Swanson <cswanson310@gmail.com> | 2015-10-23 17:46:09 -0400 |
| commit | 9284edb11f0626c77017117ef02790881586aa26 (patch) | |
| tree | 69bf0c8d5120085228b70f7e4b94bdd427e5d007 /src/mongo/db/index | |
| parent | d4d8955022819016cca2d5555ddec69c12f8c9dc (diff) | |
| download | mongo-9284edb11f0626c77017117ef02790881586aa26.tar.gz | |
SERVER-20906 Add a random cursor implementation for mmap_v1 storage engine
Diffstat (limited to 'src/mongo/db/index')
| -rw-r--r-- | src/mongo/db/index/index_access_method.cpp | 5 | ||||
| -rw-r--r-- | src/mongo/db/index/index_access_method.h | 4 |
2 files changed, 9 insertions, 0 deletions
diff --git a/src/mongo/db/index/index_access_method.cpp b/src/mongo/db/index/index_access_method.cpp index b40c2319a8a..d731f9cbfed 100644 --- a/src/mongo/db/index/index_access_method.cpp +++ b/src/mongo/db/index/index_access_method.cpp @@ -168,6 +168,11 @@ std::unique_ptr<SortedDataInterface::Cursor> IndexAccessMethod::newCursor(Operat return _newInterface->newCursor(txn, isForward); } +std::unique_ptr<SortedDataInterface::Cursor> IndexAccessMethod::newRandomCursor( + OperationContext* txn) const { + return _newInterface->newRandomCursor(txn); +} + // Remove the provided doc from the index. Status IndexAccessMethod::remove(OperationContext* txn, const BSONObj& obj, diff --git a/src/mongo/db/index/index_access_method.h b/src/mongo/db/index/index_access_method.h index 5dc88d30d80..df62c4ae937 100644 --- a/src/mongo/db/index/index_access_method.h +++ b/src/mongo/db/index/index_access_method.h @@ -123,6 +123,10 @@ public: */ std::unique_ptr<SortedDataInterface::Cursor> newCursor(OperationContext* txn, bool isForward = true) const; + /** + * Returns a pseudo-random cursor over 'this' index. + */ + std::unique_ptr<SortedDataInterface::Cursor> newRandomCursor(OperationContext* txn) const; // ------ index level operations ------ |