That definition is simply adding metadata to the field definitions; they
won't directly impact protobuf if you're using the default tools, but if
you're using custom tools, or a layer on top of protobuf that knows how to
inspect metadata, it can do additional things with the information. The
metadata isn't part of *payload* data; it exists independent of any
individual messages.
If you want more info, perhaps try clarifying the question so we understand
which bit it unclear.
On Thu, 11 Jul 2019 at 12:49, abdelrahman hamdy <
hamdyabdelrahman...@gmail.com> wrote:
> can anyone help me understanding this block of code and haw file have this
> value in the same line, example in FIX protocol tage = value so deliver
> companyID tage=value is 128 = IBM for example.
> i need help please .
> string deliver_to_comp_id = 3 [(fix.tag)=128, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_0];
>
> message StandardHeader {
> string begin_string = 1 [(fix.tag)=8, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_0];
> sfixed64 body_length = 2 [(fix.tag)=9, (fix.type)=
> DATATYPE_LENGTH, (fix.field_added)=VERSION_FIX_4_0];
> string deliver_to_comp_id = 3 [(fix.tag)=128, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_0];
> string deliver_to_sub_id = 4 [(fix.tag)=129, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_0];
> sfixed64 msg_seq_num = 5 [(fix.tag)=34, (fix.type)=
> DATATYPE_SEQ_NUM, (fix.field_added)=VERSION_FIX_4_0];
> MsgTypeEnum msg_type = 6 [(fix.tag)=35, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_0];
> string on_behalf_of_comp_id = 7 [(fix.tag)=115, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_0];
> string on_behalf_of_sub_id = 8 [(fix.tag)=116, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_0];
> fix.Timestamp orig_sending_time = 9 [(fix.tag)=122, (fix.type)=
> DATATYPE_UTC_TIMESTAMP, (fix.field_added)=VERSION_FIX_4_0];
> bool poss_dup_flag = 10 [(fix.tag)=43, (fix.type)=
> DATATYPE_BOOLEAN, (fix.field_added)=VERSION_FIX_4_0];
> bool poss_resend = 11 [(fix.tag)=97, (fix.type)=
> DATATYPE_BOOLEAN, (fix.field_added)=VERSION_FIX_4_0];
> string secure_data = 12 [(fix.tag)=91, (fix.type)=
> DATATYPE_DATA, (fix.field_added)=VERSION_FIX_4_0];
> sfixed64 secure_data_len = 13 [(fix.tag)=90, (fix.type)=
> DATATYPE_LENGTH, (fix.field_added)=VERSION_FIX_4_0];
> string sender_comp_id = 14 [(fix.tag)=49, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_0];
> string sender_sub_id = 15 [(fix.tag)=50, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_0];
> fix.Timestamp sending_time = 16 [(fix.tag)=52, (fix.type)=
> DATATYPE_UTC_TIMESTAMP, (fix.field_added)=VERSION_FIX_4_0];
> string target_comp_id = 17 [(fix.tag)=56, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_0];
> string target_sub_id = 18 [(fix.tag)=57, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_0];
> string deliver_to_location_id = 19 [(fix.tag)=145, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_1];
> string on_behalf_of_location_id = 20 [(fix.tag)=144,
> (fix.type)=DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_1];
> string sender_location_id = 21 [(fix.tag)=142, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_1];
> string target_location_id = 22 [(fix.tag)=143, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_1];
> sfixed64 last_msg_seq_num_processed = 23 [(fix.tag)=369,
> (fix.type)=DATATYPE_SEQ_NUM, (fix.field_added)=VERSION_FIX_4_2];
> string message_encoding = 24 [(fix.tag)=347, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_2];
> string xml_data = 25 [(fix.tag)=213, (fix.type)=
> DATATYPE_DATA, (fix.field_added)=VERSION_FIX_4_2];
> sfixed64 xml_data_len = 26 [(fix.tag)=212, (fix.type)=
> DATATYPE_LENGTH, (fix.field_added)=VERSION_FIX_4_2];
> ApplVerIDEnum appl_ver_id = 27 [(fix.tag)=1128, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_4];
> string cstm_appl_ver_id = 28 [(fix.tag)=1129, (fix.type)=
> DATATYPE_STRING, (fix.field_added)=VERSION_FIX_4_4];
> repeated HopGrp hop_grp = 29
> [(fix.field_added)=VERSION_FIX_4_4];
> sfixed64 appl_ext_id = 30 [(fix.tag)=1156, (fix.type)=
> DATATYPE_INT, (fix.field_added)=VERSION_FIX_5_0];
> }
>
>
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--
Regards,
Marc
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