Hello,
Need some help with prefix filtering...
We ran into the max clause count problem with our usage of the
wildcard query. Essentially what we are trying to do is:
One of the fields in our index contains a 'path' representing a file
system location. For example:
/folder A/subfolder/document 1.pdf
/folder B/image 1.jpg
/folder B/image 2.jpg
/folder B2/image 3.jpg
/folder C/image 4.jpg
We have a security layer in our application that filters results based
on the users permissions. These permissions (VIEW, EDIT, ...) can be
set on 'folder paths'. To filter the results we build a bool query
with a wildcard (or prefix) query for each folder for which the user
has VIEW permissions, for example:
/folder A/subfolder/*
/folder B/*
/folder B2/*
This does exactly what we want to, but because a wildcard query is
rewritten to term queries it fails when there are more then 1024
documents below a folder (max clause count of rewritten bool query).
After all, each document has a different (untokenized) term value for
the 'path' field.
After searching the web we found some alternative methods, for example
by using a PrefixFilter wrapped in a CachingWrapperFilter instead of a
query. Before we start implementing I'd like to check if anyone here
may have some more experience with queries like this or may have a
better suggestion on how to approach this?
Kind regards,
Nico Krijnen
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