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From "Petersen, Robert" <>
Subject RE: Searching with special chars
Date Thu, 27 Feb 2014 18:04:30 GMT
I agree with Erick, but if you want the special characters to count in searches, you might
consider not just stripping them out but replacing them with textual placeholders (which would
also have to be done at indexing time).  For instance, I replace C# with csharp and C++ with
cplusplus during indexing and during searching before passing them along to my solr layer.

Hope that helps,

-----Original Message-----
From: Erick Erickson [] 
Sent: Thursday, February 27, 2014 7:45 AM
Subject: Re: Searching with special chars

Good luck! You'll need it.

Problem is this is such a sticky wicket. You can move the cleaning up to the PHP layer, that
is strip out the parens.

You could write a Solr component that got the query _very_ early and transformed it. You'd
have to get here before parsing.

Either way, though, you'll be endlessly trying to second-guess the query parsing and/or intent
of the user.

I'd recommend the PHP layer if anything, it's closer to the user and you may have a better
chance to guess right.


On Wed, Feb 26, 2014 at 10:36 PM, deniz <> wrote:

> Hello,
> We are facing some kinda weird problem. So here is the scenario:
> We have a frontend and a middle-ware which is dealing with user input 
> search queries before posting to Solr.
> So when a user enters city:Frankenthal_(Pfalz) and then searches, 
> there is no result although there are fields on some documents 
> matching city:Frankenthal_(Pfalz). We are aware that we can escape 
> those chars, but the middleware which is accepting queries is running 
> on a Glassfish server, which is refusing URLs with backslashes in it, 
> hence using backslashes is not okay for posting the query.
> To make everyone clear about the system it looks like:
> (PHP) -> Encoded JSON -> (Glassfish App - Middleware) -> Javabin -> 
> Solr
> any other ideas who to deal with queries with special chars like this one?
> -----
> Zeki ama calismiyor... Calissa yapar...
> --
> View this message in context:
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