Can two service publish different set of Dictionary

gowrisankar.dasarathan

Hi

Can we publish two services with different set of dictionary to ADH? If so, how should we manage the disctionaries in ADH and ADS

Jirapongse

@gowrisankar.dasarathan

Thank you for reaching out to us.

According to the RDM specification, each service can advertise its supported dictionaries in the source directory message. For example, the following DIRECT_FEED service supports the CustomRWFFld and CustomRWFEnum dictionary.

I tested it in ADS POP and found that ADS POP will handle the default dictionary requests (RWFFld and RWFEum) sent from clients but it will forward the custom directionary requests (CustomRWFFld and CustomRWFEnum) to the service (DIRECT_FEED) that can handle the custom directionary requests. You need to contact the RTDS support team directly via MyAccount to confirm this behavior.

Regarding consumer applications, it works fine if consumer applications load the custom dictionary from local files. However, for consumer applications to download custom dictionary (CustomRWFFld and CustomRWFEnum) from ADS; API must allow users to change the name of dictionary in the dictionary request messages. I did a quick test in EMA and found that EMA doesn't allow users to change the name of dictionary in the dictionary request messages.

Moreover, if a consumer application consumes data from those services that use different set of Dictionary, I am not sure if the API can handle different set of dictionary. Please contact the API support team via Contact Premium Support to verify this usage.