.\" Man page generated from reStructuredText. . . .nr rst2man-indent-level 0 . .de1 rstReportMargin \\$1 \\n[an-margin] level \\n[rst2man-indent-level] level margin: \\n[rst2man-indent\\n[rst2man-indent-level]] - \\n[rst2man-indent0] \\n[rst2man-indent1] \\n[rst2man-indent2] .. .de1 INDENT .\" .rstReportMargin pre: . RS \\$1 . nr rst2man-indent\\n[rst2man-indent-level] \\n[an-margin] . nr rst2man-indent-level +1 .\" .rstReportMargin post: .. .de UNINDENT . RE .\" indent \\n[an-margin] .\" old: \\n[rst2man-indent\\n[rst2man-indent-level]] .nr rst2man-indent-level -1 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]] .in \\n[rst2man-indent\\n[rst2man-indent-level]]u .. .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 .\" Generated by docutils manpage writer. .