I was also suspecting something like that, the odd thing was that the with the dismax parser this seems to work, I mean passing a single * in the query just like:
http://localhost:8983/solr/collection1/select?q=*&wt=json&indent=true&defType=dismax Returns: { "responseHeader":{ "status":0, "QTime":3}, "response":{"numFound":0,"start":0,"docs":[] }, "highlighting":{} } Which is consisten with no "*" term indexed. Based on what I saw with dismax, I though that perhaps a configuration option existed to accomplish the same with the edismax query parser, but I haven't found such option. I'm going to test with a custom search component. Thanks for the quick response Alex, Regards, ----- Original Message ----- From: "Alexandre Rafalovitch" <arafa...@gmail.com> To: "solr-user" <solr-user@lucene.apache.org> Sent: Thursday, January 22, 2015 4:46:08 PM Subject: Re: Avoiding wildcard queries using edismax query parser I suspect the special characters get caught before the analyzer chains. But what about pre-pending a custom search components? Regards, Alex. ---- Sign up for my Solr resources newsletter at http://www.solr-start.com/ On 22 January 2015 at 16:33, Jorge Luis Betancourt González <jlbetanco...@uci.cu> wrote: > Hello all, > > Currently we are using edismax query parser in an internal application, we've > detected that some wildcard queries including "*" are causing some > performance issues and for this particular case we're not interested in > allowing any user to request all the indexed documents. > > This could be easily escaped in the application level, but right now we have > several applications (using several programming languages) consuming from > Solr, and adding this into each application is kind of exhausting, so I'm > wondering if there is some configuration that allow us to treat this special > characters as normal alphanumeric characters. > > I've tried one solution that worked before, involving the WordDelimiterFilter > an the types attribute: > > <filter class="solr.WordDelimiterFilterFactory" generateWordParts="0" > generateNumberParts="0" catenateWords="0" > catenateNumbers="0" catenateAll="0" splitOnCaseChange="0" > preserveOriginal="0" types="characters.txt" /> > > and in characters.txt I've mapped the special characters into ALPHA: > > + => ALPHA > * => ALPHA > > Any thoughts on this? > > > --------------------------------------------------- > XII Aniversario de la creación de la Universidad de las Ciencias > Informáticas. 12 años de historia junto a Fidel. 12 de diciembre de 2014. > --------------------------------------------------- XII Aniversario de la creación de la Universidad de las Ciencias Informáticas. 12 años de historia junto a Fidel. 12 de diciembre de 2014.
