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Satish.Pawar avatar image
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Chain request via Java ETA API

Hi,


I would like to subscribe to get constituents of Primary Chain RIC (0#US2YT) via Elektron Transport API.


I was received some example from TR support team which are for EMM protocol, where it is sending "Chain" request. What is the equivalent way of getting same using Elektron Transport API (ETA)?

Once I receive Elements in Chain then I will be making MarketPrice request to get market data.

I checked in ETA's SDK bundle but didnt find any reference of sending Chain request. I see there is some code to send SymbolList request and I am not sure that will achieve same.


If you have a sample demonstrating sending response and handling responses that will be helpful.

Or point me to appropriate sample that will be good.


Thanks,

Satish


elektronrefinitiv-realtimeelektron-sdkrrtjavaeta-apielektron-transport-apichain-ricconstituents
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Gurpreet avatar image
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Hi @Satish.Pawar,

The chains are delivered using the MarketPrice OMM domain. This article explains all the mechanisms of requesting and walking the chain object in details. The article talks about EMA API, but the same is applicable to ETA API as well.

PS: If you are new to Refinitiv realtime API's and starting a new application, then I would highly recommend using the EMA API rather then the more complex ETA. Here are the tutorials and download link for EMA.

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Satish.Pawar avatar image
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Thanks Gurpreet. This was helpful.


I have to use ETA API because of performance reason.

Based on above link that you have provided I got an idea about Chain messages request and handling.


Is there any document about ETA message API fields and their values?

Like field name, field meaning (descriptive) and eligible values (e.g. 259/RECORDTYPE).


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Gurpreet avatar image
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Hi Satish,

For the fields description, you can refer to the RDMField dictionary and enumtype file in the /etc directory, provided with the SDK. This information is also available in the Data Model discovery tool in the developer community homepage.

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