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https://issues.apache.org/jira/browse/SOLR-2026?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon Willnauer updated SOLR-2026:
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Attachment: SOLR-2026.patch
Karl,
this improvement sounds perfectly reasonable to me. The usecase could indeed
help many people who have to run search requests including multiple queries
without doing another roundtrip and sending results from previous queries back
and forth. I modified your patch a little bit and marked bw stuff as
deprecated. I also added replacements for those methods as well as simplifying
some of the code.
I didn't run all the test yet but the tests I added for this issue pass. I
attach my current status and run complete tests tomorrow!
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
> 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.)
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