MONGOC_GRIDFS_FIND_ONE - Online Linux Manual PageSection : 3
Updated : Feb 04, 2021
Source : 1.17.4
Note : libmongoc

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NAMEmongoc_gridfs_find_one − mongoc_gridfs_find_one()

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DEPRECATEDThis function is deprecated, use mongoc_gridfs_find_one_with_opts instead.

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

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

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DESCRIPTIONThis 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.

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ERRORSErrors are propagated via the error parameter.

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RETURNSA 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.

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AUTHORMongoDB, Inc

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COPYRIGHT2017-present, MongoDB, Inc 0

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