mongoc_gridfs_find_one - mongoc_gridfs_find_one()

NAME  SYNOPSIS  PARAMETERS  DESCRIPTION  ERRORS  RETURNS  AUTHOR  COPYRIGHT 

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NAME

mongoc_gridfs_find_one − mongoc_gridfs_find_one()

WARNING:

Deprecated since version 1.5.0: This function is deprecated, use mongoc_gridfs_find_one_with_opts() instead.

SYNOPSIS

mongoc_gridfs_file_t *
mongoc_gridfs_find_one (mongoc_gridfs_t *gridfs,
                        const bson_t *query,
                        bson_error_t *error) BSON_GNUC_WARN_UNUSED_RESULT
   BSON_GNUC_DEPRECATED_FOR (mongoc_gridfs_find_one_with_opts);

PARAMETERS

	•		gridfs: A mongoc_gridfs_t.
	•		query: A bson_t.
	•		error: An optional location for a bson_error_t or NULL.

DESCRIPTION

This function shall execute a query on the underlying gridfs implementation. The first file matching query will be returned. If there is an error, NULL is returned and error is filled out; if there is no error but no matching file is found, NULL is returned and the error code and domain are 0.

This function is considered a retryable read operation. Upon a transient error (a network error, errors due to replica set failover, etc.) the operation is safely retried once. If retryreads is false in the URI (see mongoc_uri_t) the retry behavior does not apply.

ERRORS

Errors are propagated via the error parameter.

RETURNS

A newly allocated mongoc_gridfs_file_t or NULL if no file could be found. You must free the resulting file with mongoc_gridfs_file_destroy() if non−NULL.

AUTHOR

MongoDB, Inc

COPYRIGHT

2017-present, MongoDB, Inc

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