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);
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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  mon‐
23       goc_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  mon‐
71         goc_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   mon‐
76         goc_write_concern_append  to  add  the write concern to opts. See the
77         example code for mongoc_client_write_command_with_opts.
78
79       · sessionId:  First,  construct  a  mongoc_client_session_t  with  mon‐
80         goc_client_start_session.  You  can  begin  a  transaction  with mon‐
81         goc_client_session_start_transaction, optionally with a mongoc_trans‐
82         action_opt_t  that  overrides  the options inherited from client, and
83         use mongoc_client_session_append to add the session to opts. See  the
84         example code for mongoc_client_session_t.
85
86       · collation:  Configure  textual  comparisons.  See  Setting  Collation
87         Order, 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.
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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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1181.16.2                           FMeObNG2O5C,_C2L0I2E0NT_READ_WRITE_COMMAND_WITH_OPTS(3)
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