1MONGOC_DATABASE_READ_WRITE_COMMAMNODN_GWlOIiCTb_HmD_oAOnTPgAToBScA(S3E)_READ_WRITE_COMMAND_WITH_OPTS(3)
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NAME

6       mongoc_database_read_write_command_with_opts       -       mongoc_data‐
7       base_read_write_command_with_opts()
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SYNOPSIS

10          bool
11          mongoc_database_read_write_command_with_opts (
12             mongoc_database_t *database,
13             const bson_t *command,
14             const mongoc_read_prefs_t *read_prefs /* UNUSED */,
15             const bson_t *opts,
16             bson_t *reply,
17             bson_error_t *error);
18
19       Execute a command on the server, applying logic for commands that  both
20       read  and write, and taking the MongoDB server version into account. To
21       send a raw command to  the  server  without  any  of  this  logic,  use
22       mongoc_database_command_simple().
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24       Use  this  function  for  commands  that  both  read and write, such as
25       "mapReduce" with an output collection.
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27       Read and write concern and  collation  can  be  overridden  by  various
28       sources.  In  a transaction, read concern and write concern are prohib‐
29       ited in opts. The highest-priority sources for these options are listed
30       first  in  the  following  table. Read preferences are not applied. The
31       write concern is omitted for MongoDB before 3.4.
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33                     ┌─────────────┬───────────────┬───────────┐
34                     │Read Concern │ Write Concern │ Collation │
35                     ├─────────────┼───────────────┼───────────┤
36                     │opts         │ opts          │ opts      │
37                     ├─────────────┼───────────────┼───────────┤
38                     │Transaction  │ Transaction   │           │
39                     ├─────────────┼───────────────┼───────────┤
40                     │database     │ database      │           │
41                     └─────────────┴───────────────┴───────────┘
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43       See the example for transactions and for the  "distinct"  command  with
44       opts.
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46       reply is always initialized, and must be freed with bson_destroy().
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48       (The  mongoc_read_prefs_t  parameter  was included by mistake when this
49       function was introduced in libmongoc 1.5. A command  that  writes  must
50       not obey a read preference.)
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PARAMETERS

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

95       Errors are propagated via the error parameter.
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RETURNS

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

104       See the example code for mongoc_client_read_command_with_opts().
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AUTHOR

107       MongoDB, Inc
108

110       2017-present, MongoDB, Inc
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1151.23.1                         MOONcGtOC2_0D,AT2A0B2A2SE_READ_WRITE_COMMAND_WITH_OPTS(3)
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