1MONGOC_CLIENT_READ_WRITE_COMMAND_WMIOTlNHiG_bOOmCPo_TnCSgL(oI3cE)NT_READ_WRITE_COMMAND_WITH_OPTS(3)
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NAME

6       mongoc_client_read_write_command_with_opts            -            mon‐
7       goc_client_read_write_command_with_opts()
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SYNOPSIS

10          bool
11          mongoc_client_read_write_command_with_opts (
12             mongoc_client_t *client,
13             const char *db_name,
14             const bson_t *command,
15             const mongoc_read_prefs_t *read_prefs /* UNUSED */,
16             const bson_t *opts,
17             bson_t *reply,
18             bson_error_t *error);
19
20       Execute a command on the server, applying logic for commands that  both
21       read  and write, and taking the MongoDB server version into account. To
22       send a raw command to  the  server  without  any  of  this  logic,  use
23       mongoc_client_command_simple().
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25       Use  this  function  for  commands  that  both  read and write, such as
26       "mapReduce" with an output collection.
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28       Read and write concern and  collation  can  be  overridden  by  various
29       sources.  In  a transaction, read concern and write concern are prohib‐
30       ited in opts. The highest-priority sources for these options are listed
31       first  in  the  following  table. Read preferences are not applied. The
32       write concern is omitted for MongoDB before 3.4.
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34                     ┌─────────────┬───────────────┬───────────┐
35                     │Read Concern │ Write Concern │ Collation │
36                     ├─────────────┼───────────────┼───────────┤
37                     │opts         │ opts          │ opts      │
38                     ├─────────────┼───────────────┼───────────┤
39                     │Transaction  │ Transaction   │           │
40                     ├─────────────┼───────────────┼───────────┤
41                     │client       │ client        │           │
42                     └─────────────┴───────────────┴───────────┘
43
44       See the example for transactions and for the  "distinct"  command  with
45       opts.
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47       reply is always initialized, and must be freed with bson_destroy().
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49       (The  mongoc_read_prefs_t  parameter  was included by mistake when this
50       function was introduced in libmongoc 1.5. A command  that  writes  must
51       not obey a read preference.)
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PARAMETERS

54       • client: A mongoc_client_t.
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56       • db_name: The name of the database to run the command on.
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58       • command: A bson_t containing the command specification.
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60       • read_prefs: Ignored.
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62       • opts: A bson_t containing additional options.
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64       • reply: A location for the resulting document.
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66       • error: An optional location for a bson_error_t or NULL.
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68       opts may be NULL or a BSON document with additional command options:
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70       • readConcern:    Construct    a    mongoc_read_concern_t    and    use
71         mongoc_read_concern_append() to add the read concern to opts. See the
72         example code for mongoc_client_read_command_with_opts(). Read concern
73         requires MongoDB 3.2 or later, otherwise an error is returned.
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75       • writeConcern:   Construct   a    mongoc_write_concern_t    and    use
76         mongoc_write_concern_append()  to  add the write concern to opts. See
77         the example code for mongoc_client_write_command_with_opts().
78
79       • sessionId:   First,   construct   a   mongoc_client_session_t    with
80         mongoc_client_start_session().  You  can  begin  a  transaction  with
81         mongoc_client_session_start_transaction(),    optionally    with    a
82         mongoc_transaction_opt_t  that  overrides  the options inherited from
83         client, and use mongoc_client_session_append() to add the session  to
84         opts. See the example code for mongoc_client_session_t.
85
86       • collation:  Configure  textual comparisons. See Setting Collation Or‐
87         der, and the MongoDB Manual entry on  Collation.  Collation  requires
88         MongoDB 3.2 or later, otherwise an error is returned.
89
90       • serverId:  To  target  a specific server, include an int32 "serverId"
91         field. Obtain the id by calling  mongoc_client_select_server(),  then
92         mongoc_server_description_id() on its return value.
93
94       Consult  the  MongoDB  Manual  entry on Database Commands for each com‐
95       mand's arguments.
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ERRORS

98       Errors are propagated via the error parameter.
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RETURNS

101       Returns true if successful. Returns false and sets error if  there  are
102       invalid arguments or a server or network error.
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104       A write concern timeout or write concern error is considered a failure.
105

EXAMPLE

107       See the example code for mongoc_client_read_command_with_opts().
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AUTHOR

110       MongoDB, Inc
111

113       2017-present, MongoDB, Inc
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1181.23.1                           OMcOtNG2O0C,_C2L0I2E2NT_READ_WRITE_COMMAND_WITH_OPTS(3)
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