At [1], the ARQ documentation describes how to create your own filter and property functions and have those dynamically loaded. That page also says, in the first paragraph, “ARQ also has syntactic extensions for GROUP BY ... these are described elsewhere.” Where are they described? The location isn’t linked from that sentence, and I couldn’t find it.
What I am looking for is this: Is there a mechanism, similar to that for filter and property functions, to define and dynamically load my own aggregate functions in ARQ? Thanks, Ian [1] https://jena.apache.org/documentation/query/extension.html
