Identify which columns from which streams in
Event Stream Processor to publish data from.
The Reuters OMM adapter can rearrange the columns from a stream in any order. Its output can also include constants, and the published output can include values from more than one stream.
Consider these items when planning the output of the Reuters OMM Output adapter:
- For each stream for which to publish data, you must specify a
unique key in the output adapter map file. Since this adapter sends data to
RMDS, the unique identifier should be an RIC. For Market Price data the key can
be just the RIC. For Level 2 data, the key must contain additional fields:
MarketbyPrice requires PRICE and SIDE, and MarketbyOrder requires ORDER_ID, in
addition to the RIC.
- Each data column you want to publish from any stream must map to
a unique FID.
- Data from one column can be repeated in the published output,
giving you a way to publish a DateTime value as separate Date and Time
values.
- If the stream you are working with receives data about the same
FID from more than one service, you can configure the adapter to differentiate
these data items by service and transmit each service's data separately.
- The first time the Reuters OMM adapter publishes to RMDS, it
publishes values for all the columns for which it is configured. After that
initial image, the adapter only publishes updates for individual columns as
these updates occur.
The datatype of the Event Stream Processor column must be
compatible with the Reuters FID datatype that feeds it. This table shows possible
matches between Event Stream Processor and FID datatypes:
| Event Stream Processor Datatype |
Reuters Datatype |
|---|
| integer |
enumeration,time_seconds,uint32, uint64, or real32 |
| long |
int64 or uint64 |
| money, float |
real32 or real64 |
| string |
ASCII_string, RMTES_string |
| date, timestamp |
date, time |