1MONGOC_GRIDFS_FIND_ONE(3) libmongoc MONGOC_GRIDFS_FIND_ONE(3)
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6 mongoc_gridfs_find_one - mongoc_gridfs_find_one()
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8 WARNING:
9 Deprecated since version 1.5.0: This function is deprecated, use
10 mongoc_gridfs_find_one_with_opts() instead.
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14 mongoc_gridfs_file_t *
15 mongoc_gridfs_find_one (mongoc_gridfs_t *gridfs,
16 const bson_t *query,
17 bson_error_t *error) BSON_GNUC_WARN_UNUSED_RESULT
18 BSON_GNUC_DEPRECATED_FOR (mongoc_gridfs_find_one_with_opts);
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21 • gridfs: A mongoc_gridfs_t.
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23 • query: A bson_t.
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25 • error: An optional location for a bson_error_t or NULL.
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28 This function shall execute a query on the underlying gridfs implemen‐
29 tation. The first file matching query will be returned. If there is an
30 error, NULL is returned and error is filled out; if there is no error
31 but no matching file is found, NULL is returned and the error code and
32 domain are 0.
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34 This function is considered a retryable read operation. Upon a tran‐
35 sient error (a network error, errors due to replica set failover, etc.)
36 the operation is safely retried once. If retryreads is false in the
37 URI (see mongoc_uri_t) the retry behavior does not apply.
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40 Errors are propagated via the error parameter.
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43 A newly allocated mongoc_gridfs_file_t or NULL if no file could be
44 found. You must free the resulting file with
45 mongoc_gridfs_file_destroy() if non-NULL.
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48 MongoDB, Inc
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51 2017-present, MongoDB, Inc
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561.24.3 Aug 17, 2023 MONGOC_GRIDFS_FIND_ONE(3)