lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Simon Willnauer (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-2026) Need infrastructure support in Solr for requests that perform multiple sequential queries
Date Fri, 06 Aug 2010 09:42:16 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12896009#action_12896009
] 

Simon Willnauer commented on SOLR-2026:
---------------------------------------

bq. So, I would request that the new QueryHandler infrastructure be able to support the Java
scripting APIs.

Lance, can you elaborate why you have such strong feelings about making this part scriptable?

bq. adding a way to allow QueryHandlers to do multiple calls
Can't you do this already? Maybe I miss something but what keeps you from running two queries
in a single QueryComponent? From what I understand is that this patch enables you doing this
by editing the solrconf.xml rather than subclass QueryComponent and if you wanna change the
 previous executed query component you have to change your code. Correct me if I am wrong.

simon

> Need infrastructure support in Solr for requests that perform multiple sequential queries
> -----------------------------------------------------------------------------------------
>
>                 Key: SOLR-2026
>                 URL: https://issues.apache.org/jira/browse/SOLR-2026
>             Project: Solr
>          Issue Type: Improvement
>          Components: SearchComponents - other
>            Reporter: Karl Wright
>            Assignee: Simon Willnauer
>         Attachments: SOLR-2026.patch, SOLR-2026.patch
>
>
> Several known cases exist where multiple index searches need to be performed in order
to arrive at the final result.  Typically, these have the constraint that the results from
one search query are required in order to form a subsequent search query.  While it is possible
to write a custom QueryComponent or search handler to perform this task, an extension to the
SearchHandler base class would readily permit such query sequences to be configured using
solrconfig.xml.
> I will be therefore writing and attaching a patch tomorrow morning which supports this
extended functionality in a backwards-compatible manner.  The tricky part, which is figuring
out how to funnel the output of the previous search result into the next query, can be readily
achieved by use of the SolrRequestObject.getContext() functionality.  The stipulation will
therefore be that the SolrRequestObject's lifetime will be that of the entire request, which
makes complete sense.  (The SolrResponseObject's lifetime will, on the other hand, be limited
to a single query, and the last response so formed will be what gets actually returned by
SearchHandler.)

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org


Mime
View raw message