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From Xikui Wang <>
Subject User Define Function (UDF) in AsterixDB
Date Thu, 02 Jun 2016 20:40:22 GMT
Hi Devs,

I want to use UDF to process the Tweets that I got from the feed, and I met
following two questions. Hope you guys can help me or point me to the right

1. How to install UDF on instance running from

Website only mentioned how to install with Managix. I am wondering if there
is a way for me to install it on instance running in Eclipse, which is
easier for debugging.

2. Implementation of UDF

I found several UDFs in
like SumFunction, ParseTweetFunction. I assume if I want to implement new
UDF, it needs to implement IExternalScalarFunction interface and to be put
under the same directory? I also found 'aggregate' and 'unnest' type which
is not implemented yet. Just out of curiosity, what is the difference
between them?

Thanks in advance! :)


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