diff options
Diffstat (limited to 'src/mongo/db/update/update_driver.h')
| -rw-r--r-- | src/mongo/db/update/update_driver.h | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/src/mongo/db/update/update_driver.h b/src/mongo/db/update/update_driver.h index 6152e22cefb..65785542414 100644 --- a/src/mongo/db/update/update_driver.h +++ b/src/mongo/db/update/update_driver.h @@ -39,6 +39,7 @@ #include "mongo/db/ops/modifier_interface.h" #include "mongo/db/query/canonical_query.h" #include "mongo/db/update/modifier_table.h" +#include "mongo/db/update/update_object_node.h" #include "mongo/db/update_index_data.h" namespace mongo { @@ -54,10 +55,18 @@ public: ~UpdateDriver(); /** - * Returns OK and fills in '_mods' if 'updateExpr' is correct. Otherwise returns an - * error status with a corresponding description. + * Parses the update expression 'updateExpr'. If the featurCompatibilityVersion is 3.6, + * 'updateExpr' is parsed into '_root'. Otherwise, 'updateExpr' is parsed into '_mods'. This is + * done because applying updates via UpdateNode creates new fields in lexicographic order, + * whereas applying updates via ModifierInterface creates new fields in the order they are + * specified in 'updateExpr', so it is necessary that the whole replica set have version 3.6 in + * order to use UpdateNode. Uasserts if the featureCompatibilityVersion is 3.4 and + * 'arrayFilters' is non-empty. Uasserts or returns a non-ok status if 'updateExpr' fails to + * parse. */ - Status parse(const BSONObj& updateExpr, const bool multi = false); + Status parse(const BSONObj& updateExpr, + const std::map<StringData, std::unique_ptr<ArrayFilter>>& arrayFilters, + const bool multi = false); /** * Fills in document with any fields in the query which are valid. @@ -157,7 +166,12 @@ private: // Is there a list of $mod's on '_mods' or is it just full object replacement? bool _replacementMode; - // Collection of update mod instances. Owned here. + // The root of the UpdateNode tree. If the featureCompatibilityVersion is 3.6, the update + // expression is parsed into '_root'. + std::unique_ptr<UpdateObjectNode> _root; + + // Collection of update mod instances. Owned here. If the featureCompatibilityVersion is 3.4, + // the update expression is parsed into '_mods'. std::vector<ModifierInterface*> _mods; // What are the list of fields in the collection over which the update is going to be |