1MONGOC_FIND_AND_MODIFY_OPTS_APPEND(3l)ibmongMoOcNGOC_FIND_AND_MODIFY_OPTS_APPEND(3)
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NAME

6       mongoc_find_and_modify_opts_append   -  mongoc_find_and_modify_opts_ap‐
7       pend()
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SYNOPSIS

10          bool
11          mongoc_find_and_modify_opts_append (mongoc_find_and_modify_opts_t *opts,
12                                              const bson_t *extra);
13

PARAMETERS

15       • opts: A mongoc_find_and_modify_opts_t.
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17       • extra: A bson_t with fields and values to append directly to the fin‐
18         dAndModify command sent to the server.
19

DESCRIPTION

21       Adds arbitrary options to a findAndModify command.
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23       extra does not have to remain valid after calling this function.
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25       extra may be NULL or a BSON document with additional command options:
26
27       • writeConcern:    Construct    a    mongoc_write_concern_t   and   use
28         mongoc_write_concern_append() to add the write concern to  opts.  See
29         the example code for mongoc_client_write_command_with_opts().
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31       • sessionId:    First,   construct   a   mongoc_client_session_t   with
32         mongoc_client_start_session().  You  can  begin  a  transaction  with
33         mongoc_client_session_start_transaction(),    optionally    with    a
34         mongoc_transaction_opt_t that overrides the  options  inherited  from
35         collection, and use mongoc_client_session_append() to add the session
36         to opts. See the example code for mongoc_client_session_t.
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38       • hint: A document or string that specifies the index to use to support
39         the query predicate.
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41       • let:  A  BSON  document  consisting of any number of parameter names,
42         each followed by definitions of constants in the  MQL  Aggregate  Ex‐
43         pression language.
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45       • comment: A bson_value_t specifying the comment to attach to this com‐
46         mand. The comment will appear in log messages, profiler  output,  and
47         currentOp output. Requires MongoDB 4.4 or later.
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RETURNS

50       Returns  true  on  success. If any arguments are invalid, returns false
51       and logs an error.
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APPENDING OPTIONS TO FINDANDMODIFY

54       opts.c
55
56          void
57          fam_opts (mongoc_collection_t *collection)
58          {
59             mongoc_find_and_modify_opts_t *opts;
60             bson_t reply;
61             bson_t *update;
62             bson_error_t error;
63             bson_t query = BSON_INITIALIZER;
64             mongoc_write_concern_t *wc;
65             bson_t extra = BSON_INITIALIZER;
66             bool success;
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68
69             /* Find Zlatan Ibrahimovic, the striker */
70             BSON_APPEND_UTF8 (&query, "firstname", "Zlatan");
71             BSON_APPEND_UTF8 (&query, "lastname", "Ibrahimovic");
72             BSON_APPEND_UTF8 (&query, "profession", "Football player");
73
74             /* Bump his age */
75             update = BCON_NEW ("$inc", "{", "age", BCON_INT32 (1), "}");
76
77             opts = mongoc_find_and_modify_opts_new ();
78             mongoc_find_and_modify_opts_set_update (opts, update);
79
80             /* Abort if the operation takes too long. */
81             mongoc_find_and_modify_opts_set_max_time_ms (opts, 100);
82
83             /* Set write concern w: 2 */
84             wc = mongoc_write_concern_new ();
85             mongoc_write_concern_set_w (wc, 2);
86             mongoc_write_concern_append (wc, &extra);
87
88             /* Some future findAndModify option the driver doesn't support conveniently
89              */
90             BSON_APPEND_INT32 (&extra, "futureOption", 42);
91             mongoc_find_and_modify_opts_append (opts, &extra);
92
93             success = mongoc_collection_find_and_modify_with_opts (
94                collection, &query, opts, &reply, &error);
95
96             if (success) {
97                char *str;
98
99                str = bson_as_canonical_extended_json (&reply, NULL);
100                printf ("%s\n", str);
101                bson_free (str);
102             } else {
103                fprintf (
104                   stderr, "Got error: \"%s\" on line %d\n", error.message, __LINE__);
105             }
106
107             bson_destroy (&reply);
108             bson_destroy (&extra);
109             bson_destroy (update);
110             bson_destroy (&query);
111             mongoc_write_concern_destroy (wc);
112             mongoc_find_and_modify_opts_destroy (opts);
113          }
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AUTHOR

117       MongoDB, Inc
118

120       2017-present, MongoDB, Inc
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1251.23.1                           Oct 20, 2M0O2N2GOC_FIND_AND_MODIFY_OPTS_APPEND(3)
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