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.TH "MONGOC_SESSION_OPTS_SET_DEFAULT_TRANSACTION_OPTS" "3" "May 07, 2024" "1.27.1" "libmongoc"
.SH SYNOPSIS
.INDENT 0.0
.INDENT 3.5
.sp
.EX
void
mongoc_session_opts_set_default_transaction_opts (
   mongoc_session_opt_t *opts, const mongoc_transaction_opt_t *txn_opts);
.EE
.UNINDENT
.UNINDENT
.sp
Set the default options for transactions started with this session. The \fBtxn_opts\fP argument is copied and can be freed after calling this function.
.sp
When a session is first created with \fI\%mongoc_client_start_session()\fP, it inherits from the client the read concern, write concern, and read preference with which to start transactions. Each of these fields can be overridden independently. Create a \fI\%mongoc_transaction_opt_t\fP with \fI\%mongoc_transaction_opts_new()\fP, and pass a non\-NULL option to any of the \fI\%mongoc_transaction_opt_t\fP setter functions:
.INDENT 0.0
.IP \(bu 2
\fI\%mongoc_transaction_opts_set_read_concern()\fP
.IP \(bu 2
\fI\%mongoc_transaction_opts_set_write_concern()\fP
.IP \(bu 2
\fI\%mongoc_transaction_opts_set_read_prefs()\fP
.UNINDENT
.sp
Pass the resulting transaction options to \fI\%mongoc_session_opts_set_default_transaction_opts()\fP\&. Each field set in the transaction options overrides the inherited client configuration. There is an opportunity to override each one of these fields again by passing a \fI\%mongoc_transaction_opt_t\fP to \fI\%mongoc_client_session_start_transaction()\fP\&.
.SH PARAMETERS
.INDENT 0.0
.IP \(bu 2
\fBopts\fP: A \fI\%mongoc_session_opt_t\fP\&.
.IP \(bu 2
\fBtxn_opts\fP: A \fI\%mongoc_transaction_opt_t\fP\&.
.UNINDENT
.SH AUTHOR
MongoDB, Inc
.SH COPYRIGHT
2017-present, MongoDB, Inc
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