mongoc_collection_update_many()#

Synopsis#

bool
mongoc_collection_update_many (mongoc_collection_t *collection,
                               const bson_t *selector,
                               const bson_t *update,
                               const bson_t *opts,
                               bson_t *reply,
                               bson_error_t *error);

Parameters#

collection: A mongoc_collection_t.
selector: A bson_t containing the query to match documents for updating.
update: A bson_t containing the update to perform. If updating with a pipeline, a bson_t array.
reply: A maybe-NULL pointer to overwritable storage for a bson_t to contain the results.
error: An optional location for a bson_error_t or NULL.

opts may be NULL or a BSON document with additional command options:

writeConcern: Construct a mongoc_write_concern_t and use mongoc_write_concern_append() to add the write concern to opts. See the example code for mongoc_client_write_command_with_opts().
sessionId: First, construct a mongoc_client_session_t with mongoc_client_start_session(). You can begin a transaction with mongoc_client_session_start_transaction(), optionally with a mongoc_transaction_opt_t that overrides the options inherited from collection, and use mongoc_client_session_append() to add the session to opts. See the example code for mongoc_client_session_t.
validate: Construct a bitwise-or of all desired bson_validate_flags_t. Set to false to skip client-side validation of the provided BSON documents.
comment: A bson_value_t specifying the comment to attach to this command. The comment will appear in log messages, profiler output, and currentOp output. Requires MongoDB 4.4 or later.
bypassDocumentValidation: Set to true to skip server-side schema validation of the provided BSON documents.
collation: Configure textual comparisons. See Setting Collation Order, and the MongoDB Manual entry on Collation. Collation requires MongoDB 3.2 or later, otherwise an error is returned.
hint: A document or string that specifies the index to use to support the query predicate.
upsert: When true, creates a new document if no document matches the query.
let: A BSON document consisting of any number of parameter names, each followed by definitions of constants in the MQL Aggregate Expression language.
arrayFilters: An array of filters specifying to which array elements an update should apply.

Description#

This function updates all documents in collection that match selector.

To update at most one document see mongoc_collection_update_one().

If you pass a non-NULL reply, it is filled out with fields matchedCount, modifiedCount, and optionally upsertedId if applicable. If there is a server error then reply contains either a “writeErrors” array with one subdocument or a “writeConcernErrors” array. The reply must be freed with bson_destroy().

Errors#

Errors are propagated via the error parameter.

Returns#

Returns true if successful. Returns false and sets error if there are invalid arguments or a server or network error.

A write concern timeout or write concern error is considered a failure.