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Question by dongman · Apr 27, 2018 at 08:21 AM · treprfarfa-apisymbologyunsubscribe

how to unsubscribe some symbols?

at the begin, i subscribed some symbols, but now i want to unsubscibe part of them, what I should do. details is better, thx (ps, i do not want to login again)

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nick.zincone ♦♦ · Apr 27, 2018 at 08:23 AM 0
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Hi @dongman,

Can you please confirm which API you are using?

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dongman nick.zincone ♦♦ · Apr 27, 2018 at 08:32 AM 0
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it is transport API and the program language is JAVA

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Answer by nick.zincone · Apr 28, 2018 at 06:47 PM

Hi @dongman,

When you subscribe to data using RFA, you execute the command registerClient(). When you want to unsubscribe to an open subscription, you unregisterClient(). Refer to the RFA documentation for more details. Specifically:

It's worth noting that if you request for non-streaming data, the subscription will automatically unsubscribe once you receive the initial image. Thus, no need to explicitly close the subscription. However, if you are requesting for streaming data, the unregisterClient() call will close the subscription.

With all that, if you are starting new development I would encourage you to use the Elektron SDKs I mentioned in my previous post. The RFA APIs are feature-complete and there are no plans to add anything to this API going forward. Not only are the Elektron SDKs significantly easier to use, they are our strategic APIs going forward.


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dongman · May 01, 2018 at 10:55 PM 0
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Hi nick.zincone.1, Thanks a lot, it is very useful for me.

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Answer by dongman · Apr 27, 2018 at 08:38 AM

other question, could you offer me the document named 'RFA Java RDM Usage Guide', because the official link is down ...

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nick.zincone ♦♦ · Apr 27, 2018 at 08:40 AM 0
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Hi @dongman,

Can you please provide the official link that is down?

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dongman nick.zincone ♦♦ · Apr 27, 2018 at 08:41 AM 0
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https://developers.thomsonreuters.com/error_404?sh=1

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dongman nick.zincone ♦♦ · Apr 27, 2018 at 08:44 AM 0
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you could search for the key word 'RFA Java RDM Usage Guide' and if you tried to open the result page you will receive the error code 404

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dongman nick.zincone ♦♦ · Apr 27, 2018 at 08:46 AM 0
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sure, if you could offer the link of it, please tell me, thx

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Answer by nick.zincone · Apr 27, 2018 at 09:00 AM

Hi @dongman,

RFA is not the transport API. If you want to use the transport API, refer to the Elektron APIs and choose your specific language - I believe in your case it is Java. Within there you can find documentation and tutorials for the Elektron Transport API. However, I just want to be sure that you are aware of the Elektron Message API (EMA). It is an ease-of-use API that is higher level and much easier to use for building enterprise market data consumers. The Elektron Transport API (ETA) is a low level API that provides the highest throughput and lowest latency but comes at a cost of complexity. EMA is the preferred choice for most clients.

I need confirmation on the specific API you are using to answer your original question.

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Answer by dongman · Apr 27, 2018 at 10:45 PM

Hi nick.zincone.1,

sorry for my error info, in fact it is RFA

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