Re: [Exist-open] restricting the scope of full text search makes it return false hits

[Lars B. <L.J...@uv...>]

2011/11/25 Lars Buitinck <L.J...@uv...>:
> I've put a sample file, the one with the single mention of "Boeing",
> as well as my collection.xconf at
> http://staff.science.uva.nl/~buitinck/exist-bug/. Thanks for looking
> into this.

Okay, we managed to resolve the error with ft:query. Thanks to Jens
for an (off-list) nod in the right direction: testing the text with
contains caused exactly the same error.

It turns out that ft:query was not to blame, but util:catch. We still
don't know exactly what went wrong, but when we didn't wrap ft:query
in util:catch, the error went away.

Since we do need to catch exceptions from Lucene (and XQuery 3.0
exception handling is not available in eXist 1.4), we replaced the
XPath expression

    collection('/db/documents')/root[.//house[@type eq "commons"]//scene

with

    $coll//scene[ancestor::root//pm:house/@type eq $house]

which for some reason does not trigger the bug. (We're still at a loss
why the latter works, while the former doesn't.)


-- 
Lars Buitinck
Scientific programmer, ILPS
University of Amsterdam