Clarification: " Once the parser is response aware, its easy for the components to grab the response and use them. " In the context of function queries, by components, I mean various Functions that has been extended from ValueSource.
On Thu, Sep 13, 2012 at 3:02 PM, Karthick Duraisamy Soundararaj < karthick.soundara...@gmail.com> wrote: > Hello all, > I am making multiple queries in a single url and trying to > boost the value of a field in the 2nd based on the results of the 1st. To > achieve this, my function query should be able to have access to the > response of the first query. However, QParser and QParserPlugin only > accepts req parameter and does not have any idea about the response. > > In a nutshell, all I am trying to do is that, during a serial execution of > chain of queries represented by a single url( > https://issues.apache.org/jira/browse/SOLR-1093), I am trying to > influence the results of the second query with the results of the first > query. To make the function queries ResponseAware, there are two options: > > *Option 1: Make all the QueryParsers ResponseAware* > For this the following changes seem to be inevitable > 1. Change/overload the createParser definition of QParserPlugin to > include SolrQueryResponse > createParser(string qstr, SolrParams > localParams, SolrParams params, SolrQueryResponse rsp) > -> createParser(string qstr, SolrParams localParams, SolrParams params, > SolrQueryRequest req, SolrQueryResponse rsp) > 2. Make similar changes to the getParser function in QPareser > > > *Option 2: Make FunctionQueryParser alone ResponseAware* > For this, following changes need to be made > 1. Overload the FunctionQueryParserPlugin's create method with the > following signature > createParser(string qstr, SolrParams localParams, > SolrParams params, SolrQueryRequest req, SolrQueryResponse rsp) > 2. Overload the getParser methong in QParser to permit the extra > SolrResponse parameter and invoke this call wherever necessary. > > > Once the parser is response aware, its easy for the components to grab the > response and use them. > > This change to interface would mandate changes across the various > components of SOLR that use all the different kind of parsers but I think > this would be a useful feature as it has been requested by different people > at various times. I would appreciate any kind of > suggestions/feedback. Also, I would be more than happy to discuss if there > are anyother way of doing the same. > >
