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_mod‐
7       ify_opts_append()
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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);
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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.
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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:
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27       · writeConcern:   Construct   a  mongoc_write_concern_t  and  use  mon‐
28         goc_write_concern_append to add the write concern to  opts.  See  the
29         example code for mongoc_client_write_command_with_opts.
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31       · sessionId:  First,  construct  a  mongoc_client_session_t  with  mon‐
32         goc_client_start_session. You  can  begin  a  transaction  with  mon‐
33         goc_client_session_start_transaction, optionally with a mongoc_trans‐
34         action_opt_t that overrides the options  inherited  from  collection,
35         and  use mongoc_client_session_append to add the session to opts. See
36         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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RETURNS

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

46       opts.c
47
48          void
49          fam_opts (mongoc_collection_t *collection)
50          {
51             mongoc_find_and_modify_opts_t *opts;
52             bson_t reply;
53             bson_t *update;
54             bson_error_t error;
55             bson_t query = BSON_INITIALIZER;
56             mongoc_write_concern_t *wc;
57             bson_t extra = BSON_INITIALIZER;
58             bool success;
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60
61             /* Find Zlatan Ibrahimovic, the striker */
62             BSON_APPEND_UTF8 (&query, "firstname", "Zlatan");
63             BSON_APPEND_UTF8 (&query, "lastname", "Ibrahimovic");
64             BSON_APPEND_UTF8 (&query, "profession", "Football player");
65
66             /* Bump his age */
67             update = BCON_NEW ("$inc", "{", "age", BCON_INT32 (1), "}");
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69             opts = mongoc_find_and_modify_opts_new ();
70             mongoc_find_and_modify_opts_set_update (opts, update);
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72             /* Abort if the operation takes too long. */
73             mongoc_find_and_modify_opts_set_max_time_ms (opts, 100);
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75             /* Set write concern w: 2 */
76             wc = mongoc_write_concern_new ();
77             mongoc_write_concern_set_w (wc, 2);
78             mongoc_write_concern_append (wc, &extra);
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80             /* Some future findAndModify option the driver doesn't support conveniently
81              */
82             BSON_APPEND_INT32 (&extra, "futureOption", 42);
83             mongoc_find_and_modify_opts_append (opts, &extra);
84
85             success = mongoc_collection_find_and_modify_with_opts (
86                collection, &query, opts, &reply, &error);
87
88             if (success) {
89                char *str;
90
91                str = bson_as_canonical_extended_json (&reply, NULL);
92                printf ("%s\n", str);
93                bson_free (str);
94             } else {
95                fprintf (
96                   stderr, "Got error: \"%s\" on line %d\n", error.message, __LINE__);
97             }
98
99             bson_destroy (&reply);
100             bson_destroy (&extra);
101             bson_destroy (update);
102             bson_destroy (&query);
103             mongoc_write_concern_destroy (wc);
104             mongoc_find_and_modify_opts_destroy (opts);
105          }
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AUTHOR

109       MongoDB, Inc
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112       2017-present, MongoDB, Inc
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1171.17.4                           Feb 04, 2M0O2N1GOC_FIND_AND_MODIFY_OPTS_APPEND(3)
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