mongoc_collection_delete_many -
mongoc_collection_delete_many()
bool
mongoc_collection_delete_many (mongoc_collection_t *collection,
const bson_t *selector,
const bson_t *opts,
bson_t *reply,
bson_error_t *error);
- collection: A mongoc_collection_t.
- selector: A bson_t containing the query to match
documents.
- reply: Optional. An uninitialized bson_t populated with the
delete result, or NULL.
- 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.
- 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.
This function removes all documents in the given collection
that match selector.
To delete at most one matching document, use
mongoc_collection_delete_one.
If you pass a non-NULL reply, it is filled out with the
field "deletedCount". 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 are propagated via the error parameter.
Returns true if successful. Returns false and sets
error if there are invalid arguments or a server or network
error.
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