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From Ian Boston <...@tfd.co.uk>
Subject Re: Question about Oak search/query.
Date Fri, 06 Dec 2013 15:17:49 GMT
Hi,

On 6 December 2013 16:12, Tommaso Teofili <tommaso.teofili@gmail.com> wrote:
> Hi all,
>
> 2013/12/6 Jukka Zitting <jukka.zitting@gmail.com>
>
>> Hi,
>>
>> On Thu, Dec 5, 2013 at 9:36 PM, Ian Boston <ieb@tfd.co.uk> wrote:
>> > Will the search index contain access control information or will the
>> > search results be filtered as each result is retrieved ?
>>
>> The results will be filtered after the index lookup. It would be
>> possible for a custom search index to do the access checks already
>> when building/updating the index, but even in that case the query
>> engine would still double-check the access rights (the benefit would
>> be to avoid having to retrieve and then discard many inaccessible
>> hits).
>>
>
> by the way, probably there's room for some optimization, e.g. very simple
> idea: exclude paths at depth 1 (children of root node) the principle is not
> able to read (which may mean adding them to the query passed to the Index
> implementation), if any, then you'd always have to apply fine grained ACLs
> on the result but maybe excluding some branches from start may help.


Ok, thank you, it is as I thought. It may be possible to work around
it by adding  some properties to make the result dense.

>
>
>>
>> > If the number of terms in the query exceeds the number of terms
>> > supported by Solr, does the Oak handle that transparently ?
>>
>> I'm not sure, you'll need to look at the oak-solr indexing code. Or
>> perhaps Tommaso who wrote the code can chime in here.
>>
>
> sure.
> What limitation are you exactly referring to? Is it the BooleanQuery max
> clause limit [1]?

Yes, I believe its that limit.

Do you know how many that is in the version used by Oak ?

>
> Regards,
> Tommaso
>
>
> [1] :
> http://lucene.apache.org/core/4_6_0/core/org/apache/lucene/search/BooleanQuery.TooManyClauses.html
>
>
>> BR,
>>
>> Jukka Zitting
>>

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