Thanks for your reply Erick,
I have gone through the document provided by you.
However what I have observed is that there is difference if we parse query with
Lucene 4.10.3 and Lucene 5.2.0 onwards.
For example :Query String: lottery AND (NOT ticket)Lucene 4.x parsed it as:
+lottery +ticket
Lucene 5.1.x parsed it as: +lottery +(-ticket)
And I want result as 5.1.x produces. But as I am not planning to upgrade lucene
now so looking for fix for lucene 4.10.x.
Please could you help on this?
Thanks,Mrugesh
On Monday, 26 October 2015 8:03 PM, Erick Erickson
<erickerick...@gmail.com> wrote:
Solr does not do strict Boolean logic, although it comes close. See:
https://lucidworks.com/blog/2011/12/28/why-not-and-or-and-not/
Best,
Erick
On Sun, Oct 25, 2015 at 11:18 PM, patel mrugesh
<patelmruge...@yahoo.co.in> wrote:
> Hi All,
> We are using Lucene 4.10.3, one strange behavior we have observed when NOT
> operator is used with parenthesis around.
> It looks like NOT operator is completely ignored and whatever boolean
> operator was before parenthesis is applied.
> For example, document text: "lottery ticket", query: "lottery NOT ticket". As
> expected, this query will not produce a match for this document. However, if
> this query is slightly modified and converted to "lottery (NOT ticket)" or
> "lottery AND (NOT ticket)" then match is produced. It behaves as if query
> becomes "lottery AND ticket" instead, completely ignoring NOT.
> Please somebody can shed light on this?
> Thanks,Mrugesh
>
>
>
