XQuery/Overview of eXist search functions and operators< XQuery
Overview of eXist search functions and operators
In catching up with updating from eXist-1.2.6 to eXist-1.4.x, one thing struck me. Despite eXist's elaborate documentation, I was feeling a bit lost in the myriad of overlapping search functions and their modalities (both default and fallback behaviours). I think I would feel helped with an overview grouping the different search-related functions in one place.
I don't know if this could be interesting to complete the eXist documentation; at this stage, however I'm not too sure about all functions, and maybe others may see more interesting approaches for such an overview. Therefore, I thought maybe the Wikibook could be an interesting place for such information.
The table below provides an overview, with following colour codes:
I'm not 100% sure -- all clarifications welcome!
not in eXist function documentation
|query type||index use|
|function / operator||wildcards||regex||brute force fallback||range||legacy FT||lucene FT||ngram|
|fn:contains(), fn:starts-with(), fn:ends-with()||x||x|
|=, <, <=, >, >=||x||x|
|near(), &=, |=||x||x|
|ngram:contains(), ngram:starts-with(), ngram:ends-with()||x|