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From Shawn Heisey <>
Subject Re: Does an empty query value can cause an "" error?
Date Fri, 09 Nov 2018 07:37:52 GMT
On 11/7/2018 11:36 PM, nettadalet wrote:
> Shawn Heisey-2 wrote
>> I do think that it is proper for empty parentheses to throw a syntax
>> error.  The text of the exception message is saying that the parser
>> encountered the ) character at a point when it did not expect to
>> encounter that character.

A little further thought on this:

When using code to construct query strings, I think a situation can 
easily arise where a query clause is optional, and the "()" string, with 
or without whitespace between the parentheses, ends up in the generated 

I understand why the query parser complains about that syntax ... but I 
don't think it would be unreasonable for Solr's query parsers (lucene 
and edismax probably) to just handle it as if it were not there.

My bias would be to open an enhancement issue in Jira.  I did some 
searching and didn't find an existing issue, which is surprising. It 
could be that there's an existing issue but I was not searching for the 
right keywords.  Before an issue is opened, I'd like to hear what the 
community thinks.


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