SYNOPSIS

          #define BSON_APPEND_DOCUMENT_BEGIN(b, key, child) \
             bson_append_document_begin (b, key, (int) strlen (key), child)

          bool
          bson_append_document_begin (bson_t *bson,
                                      const char *key,
                                      int key_length,
                                      bson_t *child);

PARAMETERS

       • bson: A bson_t.

       • key: An ASCII C string containing the name of the field.

       • key_length: The length of key in bytes, or -1 to determine the length with strlen().

       • child: An uninitialized bson_t to be initialized as the sub-document.

DESCRIPTION

       The  bson_append_document_begin()  function  shall begin appending a sub-document to bson.
       Use   child   to   add   fields   to    the    sub-document.    When    completed,    call
       bson_append_document_end() to complete the element.

       child MUST be an uninitialized bson_t to avoid leaking memory.

RETURNS

       Returns  true  if  the  operation was applied successfully. The function will fail if bson
       must grow larger than INT32_MAX.

AUTHOR

       MongoDB, Inc

COPYRIGHT

       2017-present, MongoDB, Inc